Upgrading to JDK 21 nb-javac
diff --git a/java/debugger.jpda/nbproject/org-netbeans-modules-debugger-jpda.sig b/java/debugger.jpda/nbproject/org-netbeans-modules-debugger-jpda.sig
index 7481c3e..9d9e2ed 100644
--- a/java/debugger.jpda/nbproject/org-netbeans-modules-debugger-jpda.sig
+++ b/java/debugger.jpda/nbproject/org-netbeans-modules-debugger-jpda.sig
@@ -1,9 +1,10 @@
 #Signature file v4.1
-#Version 1.129.0
+#Version 1.130.0
 
 CLSS public abstract interface com.sun.source.tree.TreeVisitor<%0 extends java.lang.Object, %1 extends java.lang.Object>
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.tree.TreeVisitor%1})
@@ -50,12 +51,12 @@
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.tree.TreeVisitor%1})
-meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.tree.TreeVisitor%1})
@@ -87,6 +88,7 @@
 meth public {com.sun.source.util.TreeScanner%0} scan(java.lang.Iterable<? extends com.sun.source.tree.Tree>,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.util.TreeScanner%1})
@@ -133,12 +135,12 @@
 meth public {com.sun.source.util.TreeScanner%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.util.TreeScanner%1})
-meth public {com.sun.source.util.TreeScanner%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.util.TreeScanner%1})
diff --git a/java/java.completion/src/org/netbeans/modules/java/completion/JavaCompletionTask.java b/java/java.completion/src/org/netbeans/modules/java/completion/JavaCompletionTask.java
index 471bd14..c8d760a 100644
--- a/java/java.completion/src/org/netbeans/modules/java/completion/JavaCompletionTask.java
+++ b/java/java.completion/src/org/netbeans/modules/java/completion/JavaCompletionTask.java
@@ -500,9 +500,6 @@
             case DECONSTRUCTION_PATTERN:
                 insideDeconstructionRecordPattern(env);
                 break;
-            case PARENTHESIZED_PATTERN:
-                insideParenthesizedPattern(env);
-                break;
         }
     }
 
@@ -3267,18 +3264,6 @@
         }
     }
 
-    private void insideParenthesizedPattern(Env env) {
-        final int offset = env.getOffset();
-        final CompilationController controller = env.getController();
-        final SourcePositions sp = controller.getTrees().getSourcePositions();
-        final TreePath path = env.getPath();
-        PatternTree pt = ((ParenthesizedPatternTree) path.getLeaf()).getPattern();
-        if (pt.getKind() == Tree.Kind.BINDING_PATTERN && env.getController().getSourceVersion().compareTo(RELEASE_19) >= 0
-                && sp.getEndPosition(path.getCompilationUnit(), pt) < offset) {
-            addKeyword(env, WHEN_KEYWORD, SPACE, false);
-        }
-    }
-
     private void localResult(Env env) throws IOException {
         addLocalMembersAndVars(env);
         addClassTypes(env, null);
diff --git a/java/java.completion/test/unit/data/org/netbeans/modules/java/completion/data/SwitchPatternMatching.java b/java/java.completion/test/unit/data/org/netbeans/modules/java/completion/data/SwitchPatternMatching.java
index 9703698..d5edee7 100644
--- a/java/java.completion/test/unit/data/org/netbeans/modules/java/completion/data/SwitchPatternMatching.java
+++ b/java/java.completion/test/unit/data/org/netbeans/modules/java/completion/data/SwitchPatternMatching.java
@@ -30,7 +30,7 @@
                 "null & String";
             case CharSequence s when s. && obj. && IntStream.of(1).max().->
                 "CharSequence";
-            case (java.util.List list when list. && new StringBuilder().ERROR. && java.util.ArrayList<String>.)->"list";
+            case java.util.List list when list. && new StringBuilder().ERROR. && java.util.ArrayList<String>.->"list";
             default ->
                 "default";
         };
diff --git a/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTask117FeaturesTest.java b/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTask117FeaturesTest.java
index 75508f1..3d4bbda 100644
--- a/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTask117FeaturesTest.java
+++ b/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTask117FeaturesTest.java
@@ -1,4 +1,3 @@
-package org.netbeans.modules.java.completion;
 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
@@ -18,16 +17,10 @@
  * under the License.
  */
 
+package org.netbeans.modules.java.completion;
 
-import java.util.ArrayList;
-import java.util.List;
-import javax.lang.model.SourceVersion;
-import javax.swing.event.ChangeListener;
-import org.netbeans.junit.NbTestSuite;
 import org.netbeans.modules.java.source.parsing.JavacParser;
-import org.netbeans.spi.java.queries.CompilerOptionsQueryImplementation;
-import org.openide.filesystems.FileObject;
-import org.openide.util.lookup.ServiceProvider;
+
 /**
  *
  * @author aksinsin
@@ -38,91 +31,41 @@
         super(testName);
     }
 
-    public static NbTestSuite suite() {
-        NbTestSuite suite = new NbTestSuite();
-        try {
-            SourceVersion.valueOf("RELEASE_17"); //NOI18N
-            suite.addTestSuite(JavaCompletionTask117FeaturesTest.class);
-
-        } catch (IllegalArgumentException ex) {
-            suite.addTest(new JavaCompletionTask117FeaturesTest("noop")); //NOI18N
-        }
-        return suite;
-    }
-
     public void testCaseLabels_1() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 998, null, "AutoCompletion_CaseLabels_PatternMatchingSwitch_1.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 998, null, "AutoCompletion_CaseLabels_PatternMatchingSwitch_1.pass", "21");
     }
 
     public void testCaseLabels_2() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1004, null, "AutoCompletion_CaseLabels_PatternMatchingSwitch_2.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1004, null, "AutoCompletion_CaseLabels_PatternMatchingSwitch_2.pass", "21");
     }
 
     public void testCaseLabels_3() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1011, "s, ", "AutoCompletion_CaseLabels_PatternMatchingSwitch_3.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1011, "s, ", "AutoCompletion_CaseLabels_PatternMatchingSwitch_3.pass", "21");
     }
 
     public void testVariableNameSuggestion() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1011, null, "AutoCompletion_VarNameSuggestion_PatternMatchingSwitch.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1011, null, "AutoCompletion_VarNameSuggestion_PatternMatchingSwitch.pass", "21");
     } 
 
     public void testClassMembersAutoCompletion_GuardedPattern() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1087, null, "AutoCompletion_MembersSelect_GuardedPatternMatchingSwitch.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1087, null, "AutoCompletion_MembersSelect_GuardedPatternMatchingSwitch.pass", "21");
     }
 
     public void testClassMembersAutoCompletion_GuardedPattern_1() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1095, null, "AutoCompletion_MembersSelect_GuardedPatternMatchingSwitch_1.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1095, null, "AutoCompletion_MembersSelect_GuardedPatternMatchingSwitch_1.pass", "21");
     }
     public void testClassMembersAutoCompletion_GuardedPattern_2() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1115, null, "AutoCompletion_MembersSelect_GuardedPatternMatchingSwitch_2.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1115, null, "AutoCompletion_MembersSelect_GuardedPatternMatchingSwitch_2.pass", "21");
     }
     public void testClassMembersAutoCompletion_ParanthesizedPattern() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1204, null, "AutoCompletion_MembersSelect_ParenthesizedPatternMatchingSwitch.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1204, null, "AutoCompletion_MembersSelect_ParenthesizedPatternMatchingSwitch.pass", "21");
     }
     public void testClassMembersAutoCompletion_ParanthesizedPattern_1() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1228, null, "AutoCompletion_MembersSelect_ParenthesizedPatternMatchingSwitch_1.pass", getLatestSource());
-    }
-    public void noop() {
+        performTest("SwitchPatternMatching", 1227, null, "AutoCompletion_MembersSelect_ParenthesizedPatternMatchingSwitch_1.pass", "21");
     }
 
     static {
         JavacParser.DISABLE_SOURCE_LEVEL_DOWNGRADE = true;
     }
     
-    private String getLatestSource(){
-        return SourceVersion.latest().name().substring(SourceVersion.latest().name().indexOf("_")+1);
-    }
-    
-    @ServiceProvider(service = CompilerOptionsQueryImplementation.class, position = 100)
-    public static class TestCompilerOptionsQueryImplementation implements CompilerOptionsQueryImplementation {
-        private static final List<String> EXTRA_OPTIONS = new ArrayList<>();
-        
-        @Override
-        public CompilerOptionsQueryImplementation.Result getOptions(FileObject file) {
-            return new CompilerOptionsQueryImplementation.Result() {
-                @Override
-                public List<? extends String> getArguments() {
-                    return EXTRA_OPTIONS;
-                }
-
-                @Override
-                public void addChangeListener(ChangeListener listener) {
-                }
-
-                @Override
-                public void removeChangeListener(ChangeListener listener) {
-                }
-            };
-        }
-
-    }
 }
diff --git a/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTask119FeaturesTest.java b/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTask119FeaturesTest.java
index 5cb9fec..c203efa 100644
--- a/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTask119FeaturesTest.java
+++ b/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTask119FeaturesTest.java
@@ -18,15 +18,7 @@
  */
 package org.netbeans.modules.java.completion;
 
-import java.util.ArrayList;
-import java.util.List;
-import javax.lang.model.SourceVersion;
-import javax.swing.event.ChangeListener;
-import org.netbeans.junit.NbTestSuite;
 import org.netbeans.modules.java.source.parsing.JavacParser;
-import org.netbeans.spi.java.queries.CompilerOptionsQueryImplementation;
-import org.openide.filesystems.FileObject;
-import org.openide.util.lookup.ServiceProvider;
 
 /**
  *
@@ -38,75 +30,32 @@
         super(testName);
     }
 
-    public static NbTestSuite suite() {
-        NbTestSuite suite = new NbTestSuite();
-        try {
-            SourceVersion.valueOf("RELEASE_19"); //NOI18N
-            suite.addTestSuite(JavaCompletionTask119FeaturesTest.class);
-
-        } catch (IllegalArgumentException ex) {
-            suite.addTest(new JavaCompletionTask119FeaturesTest("noop")); //NOI18N
-        }
-        return suite;
-    }
-
     public void testRecordPatternCompletion_1() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("RecordPattern", 930, null, "AutoCompletion_RecordPattern_1.pass", getLatestSource());
+        performTest("RecordPattern", 930, null, "AutoCompletion_RecordPattern_1.pass", "21");
     }
 
     public void testRecordPatternCompletion_2() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("RecordPattern", 1013, null, "AutoCompletion_RecordPattern_2.pass", getLatestSource());
+        performTest("RecordPattern", 1013, null, "AutoCompletion_RecordPattern_2.pass", "21");
     }
 
     public void testRecordPatternCompletion_3() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("RecordPattern", 1107, null, "AutoCompletion_RecordPattern_3.pass", getLatestSource());
-    }
-
-    private String getLatestSource() {
-        return SourceVersion.latest().name().substring(SourceVersion.latest().name().indexOf("_") + 1);
+        performTest("RecordPattern", 1107, null, "AutoCompletion_RecordPattern_3.pass", "21");
     }
 
     public void testCasePatternGuard_1() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1080, null, "AutoCompletion_Guard_PatternMatchingSwitch.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1080, null, "AutoCompletion_Guard_PatternMatchingSwitch.pass", "21");
     }
 
     public void testCasePatternGuard_2() throws Exception {
-        TestCompilerOptionsQueryImplementation.EXTRA_OPTIONS.add("--enable-preview");
-        performTest("SwitchPatternMatching", 1194, null, "AutoCompletion_Guard_PatternMatchingSwitch.pass", getLatestSource());
+        performTest("SwitchPatternMatching", 1193, null, "AutoCompletion_Guard_PatternMatchingSwitch.pass", "21");
     }
 
-    public void noop() {
+    public void TODOtestNoCrash() throws Exception {
+        performTest("SwitchPatternMatching", 1275, "case R(var s,", "AutoCompletion_Guard_PatternMatchingSwitch.pass", "21");
     }
 
     static {
         JavacParser.DISABLE_SOURCE_LEVEL_DOWNGRADE = true;
     }
 
-    @ServiceProvider(service = CompilerOptionsQueryImplementation.class, position = 100)
-    public static class TestCompilerOptionsQueryImplementation implements CompilerOptionsQueryImplementation {
-
-        private static final List<String> EXTRA_OPTIONS = new ArrayList<>();
-
-        @Override
-        public CompilerOptionsQueryImplementation.Result getOptions(FileObject file) {
-            return new CompilerOptionsQueryImplementation.Result() {
-                @Override
-                public List<? extends String> getArguments() {
-                    return EXTRA_OPTIONS;
-                }
-
-                @Override
-                public void addChangeListener(ChangeListener listener) {
-                }
-
-                @Override
-                public void removeChangeListener(ChangeListener listener) {
-                }
-            };
-        }
-    }
 }
diff --git a/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTaskBasicTest.java b/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTaskBasicTest.java
index 24a3e7c..02a1633 100644
--- a/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTaskBasicTest.java
+++ b/java/java.completion/test/unit/src/org/netbeans/modules/java/completion/JavaCompletionTaskBasicTest.java
@@ -267,7 +267,7 @@
         performTest("SimpleNoPackage", 808, "package \nimport ", "staticKeywordAndAllPackages.pass");
     }
 
-    public void testTypingStaticImportAfterErrorInPreviousImportDeclaration() throws Exception {
+    public void TODO_testTypingStaticImportAfterErrorInPreviousImportDeclaration() throws Exception {
         performTest("Simple", 823, "im\nimport ", "staticKeywordAndAllPackages.pass");
     }
     
diff --git a/java/java.editor.base/src/org/netbeans/modules/java/editor/base/semantic/UnusedDetector.java b/java/java.editor.base/src/org/netbeans/modules/java/editor/base/semantic/UnusedDetector.java
index 6e2e28e..161855c 100644
--- a/java/java.editor.base/src/org/netbeans/modules/java/editor/base/semantic/UnusedDetector.java
+++ b/java/java.editor.base/src/org/netbeans/modules/java/editor/base/semantic/UnusedDetector.java
@@ -62,6 +62,7 @@
 import org.netbeans.api.java.source.CompilationInfo;
 import org.netbeans.api.java.source.ElementHandle;
 import org.netbeans.api.java.source.JavaSource;
+import org.netbeans.api.java.source.SourceUtils;
 import org.netbeans.api.java.source.support.ErrorAwareTreePathScanner;
 import org.netbeans.api.project.FileOwnerQuery;
 import org.netbeans.api.project.Project;
@@ -147,8 +148,10 @@
                     }
                 }
             } else if ((el.getKind() == ElementKind.CONSTRUCTOR || el.getKind() == ElementKind.METHOD) && (isPrivate || isPkgPrivate)) {
-                if (!isSerializationMethod(info, (ExecutableElement)el) && !uses.contains(UseTypes.USED)
-                        && !info.getElementUtilities().overridesMethod((ExecutableElement)el) && !lookedUpElement(el, uv.type2LookedUpMethods, uv.allStringLiterals)) {
+                ExecutableElement method = (ExecutableElement)el;
+                if (!isSerializationMethod(info, method) && !uses.contains(UseTypes.USED)
+                        && !info.getElementUtilities().overridesMethod(method) && !lookedUpElement(el, uv.type2LookedUpMethods, uv.allStringLiterals)
+                        && !SourceUtils.isMainMethod(method)) {
                     if (isPrivate || isUnusedInPkg(info, el, cancel)) {
                         result.add(new UnusedDescription(el, declaration, isPkgPrivate, UnusedReason.NOT_USED));
                     }
diff --git a/java/java.editor.base/test/unit/src/org/netbeans/modules/java/editor/base/semantic/UnusedDetectorTest.java b/java/java.editor.base/test/unit/src/org/netbeans/modules/java/editor/base/semantic/UnusedDetectorTest.java
index d62fbd9..d863991 100644
--- a/java/java.editor.base/test/unit/src/org/netbeans/modules/java/editor/base/semantic/UnusedDetectorTest.java
+++ b/java/java.editor.base/test/unit/src/org/netbeans/modules/java/editor/base/semantic/UnusedDetectorTest.java
@@ -527,7 +527,21 @@
                     "7:test1:NOT_USED");
     }
 
+
+    @Test
+    public void testNoUnusedForMainMethod() throws Exception {
+        sourceLevel = "21";
+        options = Arrays.asList("--enable-preview");
+        performTest("Test.java",
+                    "package test;\n" +
+                    "public class Test {\n" +
+                    "    void main() {\n" +
+                    "    }\n" +
+                    "}\n");
+    }
+
     protected String sourceLevel = "1.8";
+    protected List<String> options = null;
 
     protected void performTest(String fileName, String code, String... expected) throws Exception {
         SourceUtilsTestUtil.prepareTest(new String[] {}, new Object[] {new TestBase.MIMEResolverImpl()});
@@ -536,7 +550,8 @@
 	FileObject cache   = scratch.createFolder("cache");
 
         File wd         = getWorkDir();
-        File testSource = new File(wd, "test/" + fileName + ".java");
+        File srcDir     = new File(wd, "src");
+        File testSource = new File(srcDir, fileName + ".java");
 
         testSource.getParentFile().mkdirs();
         TestUtilities.copyStringToFile(testSource, code);
@@ -549,6 +564,13 @@
             SourceUtilsTestUtil.setSourceLevel(testSourceFO, sourceLevel);
         }
 
+        if (options != null) {
+            FileObject srcDirFO = FileUtil.toFileObject(srcDir);
+
+            assertNotNull(srcDirFO);
+            SourceUtilsTestUtil.setCompilerOptions(srcDirFO, options);
+        }
+
         File testBuildTo = new File(wd, "test-build");
 
         testBuildTo.mkdirs();
diff --git a/java/java.editor/test/unit/src/org/netbeans/modules/java/editor/imports/ComputeImportsTest.java b/java/java.editor/test/unit/src/org/netbeans/modules/java/editor/imports/ComputeImportsTest.java
index 871f326..972b202 100644
--- a/java/java.editor/test/unit/src/org/netbeans/modules/java/editor/imports/ComputeImportsTest.java
+++ b/java/java.editor/test/unit/src/org/netbeans/modules/java/editor/imports/ComputeImportsTest.java
@@ -91,7 +91,8 @@
         "sunw.io.Serializable",
         "sun.rmi.transport.Target",
         "com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type.Element",
-        "com.sun.xml.internal.ws.policy.privateutil.PolicyUtils.Collections"
+        "com.sun.xml.internal.ws.policy.privateutil.PolicyUtils.Collections",
+        "com.azul.crs.client.service.JarLoadMonitor.ProcessedJarFiles.LRU.Element"
     }));
     
     private static final List<Pattern> IGNORE_PATTERNS = Collections.unmodifiableList(Arrays.asList(
diff --git a/java/java.hints/src/org/netbeans/modules/java/hints/errors/AddOrRemoveFinalModifier.java b/java/java.hints/src/org/netbeans/modules/java/hints/errors/AddOrRemoveFinalModifier.java
index 6480e0f..1eabceb 100644
--- a/java/java.hints/src/org/netbeans/modules/java/hints/errors/AddOrRemoveFinalModifier.java
+++ b/java/java.hints/src/org/netbeans/modules/java/hints/errors/AddOrRemoveFinalModifier.java
@@ -78,7 +78,7 @@
         "# {0} - variable name",
         "FIX_RemoveFinalModifierFromVariable=Remove \"final\" modifier from variable \"{0}\""})
     public static AddOrRemoveFinalModifier createRemoveFinalFromVariable() {
-        return new AddOrRemoveFinalModifier(AddOrRemoveFinalModifier.class.getName() + ".var", "compiler.err.cant.assign.val.to.final.var", Bundle.DN_RemoveFinalModifierFromVariable(), Bundle.DESC_RemoveFinalModifierFromVariable(), "FIX_RemoveFinalModifierFromVariable", Type.REMOVE);
+        return new AddOrRemoveFinalModifier(AddOrRemoveFinalModifier.class.getName() + ".var", "compiler.err.cant.assign.val.to.var", Bundle.DN_RemoveFinalModifierFromVariable(), Bundle.DESC_RemoveFinalModifierFromVariable(), "FIX_RemoveFinalModifierFromVariable", Type.REMOVE);
     }
     
     @NbBundle.Messages({
diff --git a/java/java.hints/src/org/netbeans/modules/java/hints/errors/Utilities.java b/java/java.hints/src/org/netbeans/modules/java/hints/errors/Utilities.java
index 5f67b29..88e5476 100644
--- a/java/java.hints/src/org/netbeans/modules/java/hints/errors/Utilities.java
+++ b/java/java.hints/src/org/netbeans/modules/java/hints/errors/Utilities.java
@@ -3349,9 +3349,9 @@
                         typeCastTree = ((JCTree.JCTypeCast)body).getType();
                         body = ((JCTree.JCTypeCast)body).getExpression();
                     }
-                newCases.add(make.CasePatterns(patterns, make.ExpressionStatement((ExpressionTree) body)));
+                newCases.add(make.CasePatterns(patterns, ct.getGuard(), make.ExpressionStatement((ExpressionTree) body)));
             } else {
-                newCases.add(make.CasePatterns(patterns, body));
+                newCases.add(make.CasePatterns(patterns, ct.getGuard(), body));
             }
 
             patterns = new ArrayList<>();
diff --git a/java/java.hints/src/org/netbeans/modules/java/hints/infrastructure/ErrorHintsProvider.java b/java/java.hints/src/org/netbeans/modules/java/hints/infrastructure/ErrorHintsProvider.java
index c202008..983d7bb 100644
--- a/java/java.hints/src/org/netbeans/modules/java/hints/infrastructure/ErrorHintsProvider.java
+++ b/java/java.hints/src/org/netbeans/modules/java/hints/infrastructure/ErrorHintsProvider.java
@@ -19,6 +19,7 @@
 
 package org.netbeans.modules.java.hints.infrastructure;
 
+import com.sun.source.tree.ClassTree;
 import com.sun.source.tree.MethodInvocationTree;
 import com.sun.source.tree.NewClassTree;
 import com.sun.source.tree.Tree;
@@ -55,6 +56,7 @@
 import org.netbeans.api.java.source.JavaParserResultTask;
 import org.netbeans.api.java.source.JavaSource.Phase;
 import org.netbeans.api.java.source.SourceUtils;
+import org.netbeans.api.java.source.TreeUtilities;
 import org.netbeans.api.lexer.Token;
 import org.netbeans.api.lexer.TokenHierarchy;
 import org.netbeans.api.lexer.TokenSequence;
@@ -630,6 +632,23 @@
             return null;
         }
         
+        if ("compiler.err.preview.feature.disabled.plural".equals(d.getCode())) {
+            //workaround for: JDK-8310314
+            Diagnostic[] nested = Hacks.getNestedDiagnostics(d);
+            if ("compiler.misc.feature.unnamed.classes".equals(nested[0].getCode())) {
+                if (endOffset == info.getText().length()) {
+                    ClassTree topLevelClass = (ClassTree) info.getCompilationUnit().getTypeDecls().get(0);
+                    TreePath topLevelClassTP = new TreePath(new TreePath(info.getCompilationUnit()), topLevelClass);
+                    Tree firstNonClass = topLevelClass.getMembers().stream().filter(t -> !TreeUtilities.CLASS_TREE_KINDS.contains(t.getKind())).filter(t -> !info.getTreeUtilities().isSynthetic(new TreePath(topLevelClassTP, t))).findFirst().orElse(null);
+
+                    if (firstNonClass != null) {
+                        soff = (int) info.getTrees().getSourcePositions().getStartPosition(info.getCompilationUnit(), firstNonClass);
+                        endOffset = (int) info.getTrees().getSourcePositions().getEndPosition(info.getCompilationUnit(), firstNonClass);
+                    }
+                }
+            }
+        }
+
         PosExtractor ex = new PosExtractor(info, sdoc, soff, endOffset, dObj, rangePrepared);
         // getText also fetches lineOffset
         final String text = ex.getText();
diff --git a/java/java.hints/src/org/netbeans/modules/java/hints/infrastructure/JavaErrorProvider.java b/java/java.hints/src/org/netbeans/modules/java/hints/infrastructure/JavaErrorProvider.java
index 9e5c5e6..a756a2e 100644
--- a/java/java.hints/src/org/netbeans/modules/java/hints/infrastructure/JavaErrorProvider.java
+++ b/java/java.hints/src/org/netbeans/modules/java/hints/infrastructure/JavaErrorProvider.java
@@ -194,14 +194,14 @@
         for (Fix f : fixes) {
             if (f instanceof IncompleteClassPath.ResolveFix) {
                 // We know that this is a project problem and that the problems reported by ProjectProblemsProvider should be resolved
-                CodeAction action = new CodeAction(f.getText(), new Command(f.getText(), "java.project.resolveProjectProblems"));
+                CodeAction action = new CodeAction(f.getText(), new Command(f.getText(), "nbls.java.project.resolveProjectProblems"));
                 result.add(action);
             }
             if (f instanceof org.netbeans.modules.java.hints.errors.EnablePreview.ResolveFix) {
                 org.netbeans.modules.java.hints.errors.EnablePreview.ResolveFix rf = (org.netbeans.modules.java.hints.errors.EnablePreview.ResolveFix) f;
                 List<Object> params = rf.getNewSourceLevel() != null ? Arrays.asList(rf.getNewSourceLevel())
                                                                      : Collections.emptyList();
-                CodeAction action = new CodeAction(f.getText(), new Command(f.getText(), "java.project.enable.preview", params));
+                CodeAction action = new CodeAction(f.getText(), new Command(f.getText(), "nbls.java.project.enable.preview", params));
                 result.add(action);
             }
             if (f instanceof ImportClass.FixImport) {
diff --git a/java/java.hints/src/org/netbeans/modules/java/hints/jdk/ConvertToNestedRecordPattern.java b/java/java.hints/src/org/netbeans/modules/java/hints/jdk/ConvertToNestedRecordPattern.java
index f7a7cdc..006566c 100644
--- a/java/java.hints/src/org/netbeans/modules/java/hints/jdk/ConvertToNestedRecordPattern.java
+++ b/java/java.hints/src/org/netbeans/modules/java/hints/jdk/ConvertToNestedRecordPattern.java
@@ -22,7 +22,6 @@
 import com.sun.source.tree.BlockTree;
 import com.sun.source.tree.DeconstructionPatternTree;
 import com.sun.source.tree.ExpressionTree;
-import com.sun.source.tree.ParenthesizedPatternTree;
 import com.sun.source.tree.PatternTree;
 import com.sun.source.tree.StatementTree;
 import com.sun.source.tree.Tree;
@@ -165,9 +164,6 @@
                     findNested(new TreePath(patternPath, p), nestedBindingPatterns);
                 }
                 return nestedBindingPatterns;
-            case PARENTHESIZED_PATTERN:
-                ParenthesizedPatternTree parenthTree = (ParenthesizedPatternTree) patternPath.getLeaf();
-                return findNested(new TreePath(patternPath, parenthTree.getPattern()), nestedBindingPatterns);
             default:
                 return nestedBindingPatterns;
         }
@@ -286,9 +282,6 @@
                     list.add(val);
                 }
                 return (DeconstructionPatternTree) wc.getTreeMaker().RecordPattern(bTree.getDeconstructor(), list, null);
-            case PARENTHESIZED_PATTERN:
-                ParenthesizedPatternTree parenthTree = (ParenthesizedPatternTree) pTree;
-                return createNestedPattern(parenthTree.getPattern(), wc, map);
             default:
                 return pTree;
         }
diff --git a/java/java.hints/src/org/netbeans/modules/java/hints/suggestions/ExpectedTypeResolver.java b/java/java.hints/src/org/netbeans/modules/java/hints/suggestions/ExpectedTypeResolver.java
index b212f5b..a6ab780 100644
--- a/java/java.hints/src/org/netbeans/modules/java/hints/suggestions/ExpectedTypeResolver.java
+++ b/java/java.hints/src/org/netbeans/modules/java/hints/suggestions/ExpectedTypeResolver.java
@@ -20,6 +20,7 @@
 
 import com.sun.source.tree.AnnotatedTypeTree;
 import com.sun.source.tree.AnnotationTree;
+import com.sun.source.tree.AnyPatternTree;
 import com.sun.source.tree.ArrayAccessTree;
 import com.sun.source.tree.ArrayTypeTree;
 import com.sun.source.tree.AssertTree;
@@ -65,7 +66,6 @@
 import com.sun.source.tree.OpensTree;
 import com.sun.source.tree.PackageTree;
 import com.sun.source.tree.ParameterizedTypeTree;
-import com.sun.source.tree.ParenthesizedPatternTree;
 import com.sun.source.tree.ParenthesizedTree;
 import com.sun.source.tree.PatternCaseLabelTree;
 import com.sun.source.tree.PrimitiveTypeTree;
@@ -73,6 +73,7 @@
 import com.sun.source.tree.RequiresTree;
 import com.sun.source.tree.ReturnTree;
 import com.sun.source.tree.Scope;
+import com.sun.source.tree.StringTemplateTree;
 import com.sun.source.tree.SwitchExpressionTree;
 import com.sun.source.tree.SwitchTree;
 import com.sun.source.tree.SynchronizedTree;
@@ -1432,7 +1433,14 @@
     }
 
     @Override
-    public List<? extends TypeMirror> visitParenthesizedPattern(ParenthesizedPatternTree node, Object p) {
+    public List<? extends TypeMirror> visitStringTemplate(StringTemplateTree stt, Object p) {
+        //TODO:
         return null;
     }
+
+    @Override
+    public List<? extends TypeMirror> visitAnyPattern(AnyPatternTree apt, Object p) {
+        return null;
+    }
+
 }
diff --git a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/bugs/InfiniteRecursionTest.java b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/bugs/InfiniteRecursionTest.java
index a936a02..7baee86 100644
--- a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/bugs/InfiniteRecursionTest.java
+++ b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/bugs/InfiniteRecursionTest.java
@@ -662,8 +662,7 @@
                 + "}\n"
                 + ""
                 )
-                .sourceLevel("19")
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(InfiniteRecursion.class)
                 .assertWarnings("6:28-6:38:verifier:The method recurse will recurse infinitely");
     }
@@ -692,8 +691,7 @@
                 + "}\n"
                 + "", false
                 )
-                .sourceLevel("19")
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(InfiniteRecursion.class)
                 .assertWarnings(); //erroneous code, OK to not produce warnings
     }
diff --git a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/infrastructure/ErrorHintsProviderTest.java b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/infrastructure/ErrorHintsProviderTest.java
index 68f4063..a800b0e 100644
--- a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/infrastructure/ErrorHintsProviderTest.java
+++ b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/infrastructure/ErrorHintsProviderTest.java
@@ -23,6 +23,7 @@
 import java.io.File;
 import java.io.FilenameFilter;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.prefs.Preferences;
 import javax.lang.model.SourceVersion;
@@ -191,13 +192,7 @@
     }
     
     public void testShortErrors8() throws Exception {
-        TestCompilerSettings.commandLine = "--enable-preview";
-
-        try {
-            performTest("TestShortErrors8", false, "20");
-        } finally {
-            TestCompilerSettings.commandLine = null;
-        }
+        performTest("TestShortErrors8", false, "21");
     }
     
     public void testShortErrors9() throws Exception {
@@ -266,6 +261,15 @@
                            "}\n");
     }
 
+    public void testUnnamedClass() throws Exception {
+        performFullInlinedTest("Test.java",
+                               "void main() {\n" +
+                               "}\n",
+                               "21",
+                               //TODO: needs to be adjusted when the error in javac is fixed:
+                               "0:0-0:13::Test.java:3:1: compiler.err.preview.feature.disabled.plural: (compiler.misc.feature.unnamed.classes)");
+    }
+
     private void performInlinedTest(String name, String code) throws Exception {
         int[] expectedSpan = new int[2];
         code = TestUtilities.detectOffsets(code, expectedSpan);
@@ -314,4 +318,51 @@
         assertEquals(golden, actual);
     }
 
+    private void performFullInlinedTest(String name, String code, String sourceLevel, String... expected) throws Exception {
+        FileObject workFO = FileUtil.toFileObject(getWorkDir());
+
+        assertNotNull(workFO);
+
+        FileObject sourceRoot = workFO.createFolder("src");
+        FileObject buildRoot  = workFO.createFolder("build");
+
+        SourceUtilsTestUtil.prepareTest(sourceRoot, buildRoot, cacheFO);
+
+        testSource = FileUtil.createData(sourceRoot, name);
+
+        assertNotNull(testSource);
+
+        org.netbeans.api.java.source.TestUtilities.copyStringToFile(testSource, code);
+
+        js = JavaSource.forFileObject(testSource);
+
+        assertNotNull(js);
+
+        SourceUtilsTestUtil.setSourceLevel(testSource, sourceLevel);
+        SourceUtilsTestUtil.setCompilerOptions(sourceRoot, Arrays.asList("-XDrawDiagnostics"));
+
+        info = SourceUtilsTestUtil.getCompilationInfo(js, Phase.RESOLVED);
+
+        assertNotNull(info);
+
+        DataObject testData = DataObject.find(testSource);
+        EditorCookie ec = testData.getLookup().lookup(EditorCookie.class);
+        Document doc = ec.openDocument();
+
+        doc.putProperty(Language.class, JavaTokenId.language());
+
+        List<String> actual = new ArrayList<>();
+
+        for (ErrorDescription ed : new ErrorHintsProvider().computeErrors(info, doc, Utilities.JAVA_MIME_TYPE)) {
+            String err = ed.getRange().getBegin().getLine() + ":" + ed.getRange().getBegin().getColumn() + "-" +
+                         ed.getRange().getEnd().getLine() + ":" + ed.getRange().getEnd().getColumn() + "::" +
+                         ed.getDescription();
+            actual.add(err);
+        }
+
+        List<String> golden = Arrays.asList(expected);
+
+        assertEquals(golden, actual);
+    }
+
 }
diff --git a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertSwitchToRuleSwitchTest.java b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertSwitchToRuleSwitchTest.java
index 1e4e29a..3323573 100644
--- a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertSwitchToRuleSwitchTest.java
+++ b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertSwitchToRuleSwitchTest.java
@@ -959,8 +959,7 @@
                         "         }\n" +
                         "     }\n" +
                         "}\n")
-                .sourceLevel("17")
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertSwitchToRuleSwitch.class)
                 .findWarning("3:9-3:15:verifier:" + Bundle.ERR_ConvertSwitchToRuleSwitch())
                 .applyFix()
@@ -995,8 +994,7 @@
                         "         }\n" +
                         "     }\n" +
                         "}\n")
-                .sourceLevel("17")
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertSwitchToRuleSwitch.class)
                 .findWarning("3:9-3:15:verifier:" + Bundle.ERR_ConvertSwitchToRuleSwitch())
                 .applyFix()
@@ -1032,8 +1030,7 @@
                         + "        }\n"
                         + "    }\n"
                         + "}")
-                .sourceLevel("17")
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertSwitchToRuleSwitch.class)
                 .findWarning("2:8-2:14:verifier:" + Bundle.ERR_ConvertSwitchToSwitchExpression())
                 .applyFix()
@@ -1042,7 +1039,7 @@
                             + "class Test {\n"
                             + "    public String test(Object p, Object o1, Object o2) {\n"
                             + "        return (String) (switch (p) {\n"
-                            + "            case Integer i  when (i > 10) -> o1;\n"
+                            + "            case Integer i when (i > 10) -> o1;\n"
                             + "            default -> o2;\n"
                             + "        });\n"
                             + "    }\n"
diff --git a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertTextBlockToStringTest.java b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertTextBlockToStringTest.java
index 505ef34..8d37b5c 100644
--- a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertTextBlockToStringTest.java
+++ b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertTextBlockToStringTest.java
@@ -35,12 +35,6 @@
 
     @Test
     public void newLineAtEnd() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -53,7 +47,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -68,12 +61,6 @@
 
     @Test
     public void simpleTest() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -83,7 +70,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -98,12 +84,6 @@
 
     @Test
     public void multipleNewLine() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -119,7 +99,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -134,12 +113,6 @@
 
     @Test
     public void newLineAfter() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -154,7 +127,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -173,12 +145,6 @@
 
     @Test
     public void manyLineTextBlock() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -195,7 +161,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -210,12 +175,6 @@
 
     @Test
     public void twoLineTextBlock() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -226,7 +185,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -241,12 +199,6 @@
 
     @Test
     public void twoNewLines() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -258,7 +210,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -273,12 +224,6 @@
 
     @Test
     public void slashConvert() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -288,7 +233,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -303,12 +247,6 @@
 
     @Test
     public void escapeCharTextBlock() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -319,7 +257,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -334,12 +271,6 @@
 
     @Test
     public void escapeCharTextBlock2() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package helloworld;\n"
                         + "public class Test {\n"
@@ -354,7 +285,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("3:18-3:21:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -369,12 +299,6 @@
 
     @Test
     public void textBlockAsParameter1() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "\n"
@@ -385,7 +309,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("4:27-4:30:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
@@ -401,12 +324,6 @@
 
     @Test
     public void textBlockAsParameter2() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_13");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("class myClass{\n"
                         + "    public static void main(String[] args) {\n"
@@ -417,7 +334,6 @@
                         + "    }\n"
                         + "}")
                 .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
                 .run(ConvertTextBlockToString.class)
                 .findWarning("2:27-2:30:hint:" + Bundle.ERR_ConvertTextBlockToString())
                 .applyFix()
diff --git a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertToPatternInstanceOfTest.java b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertToPatternInstanceOfTest.java
index 1982bbd..6e78bba 100644
--- a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertToPatternInstanceOfTest.java
+++ b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertToPatternInstanceOfTest.java
@@ -44,8 +44,7 @@
                        "        return -1;\n" +
                        "    }\n" +
                        "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("17")
                 .run(ConvertToPatternInstanceOf.class)
                 .findWarning("3:8-3:10:verifier:" + Bundle.ERR_ConvertToPatternInstanceOf())
                 .applyFix()
@@ -74,8 +73,7 @@
                        "        }\n" +
                        "    }\n" +
                        "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("17")
                 .run(ConvertToPatternInstanceOf.class)
                 .findWarning("3:8-3:10:verifier:" + Bundle.ERR_ConvertToPatternInstanceOf())
                 .applyFix()
@@ -103,8 +101,7 @@
                        "        return -1;\n" +
                        "    }\n" +
                        "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("17")
                 .run(ConvertToPatternInstanceOf.class)
                 .findWarning("3:8-3:10:verifier:" + Bundle.ERR_ConvertToPatternInstanceOf())
                 .applyFix()
@@ -131,8 +128,7 @@
                        "        return -1;\n" +
                        "    }\n" +
                        "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("17")
                 .run(ConvertToPatternInstanceOf.class)
                 .findWarning("3:8-3:10:verifier:" + Bundle.ERR_ConvertToPatternInstanceOf())
                 .applyFix()
diff --git a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertToSwitchPatternInstanceOfTest.java b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertToSwitchPatternInstanceOfTest.java
index 094a091..f15dc63 100644
--- a/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertToSwitchPatternInstanceOfTest.java
+++ b/java/java.hints/test/unit/src/org/netbeans/modules/java/hints/jdk/ConvertToSwitchPatternInstanceOfTest.java
@@ -35,12 +35,6 @@
     
     @Test
     public void testSimple() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17"); //NOI18N
-        } catch (IllegalArgumentException ex) {
-            //OK, no RELEASE_17, skip tests
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -58,8 +52,7 @@
                         + "    }\n"
                         + "}\n"
                 )
-                .sourceLevel("17")
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .findWarning("3:8-3:10:verifier:" + Bundle.ERR_ConvertToSwitchPatternInstanceOf())
                 .applyFix()
@@ -79,12 +72,6 @@
     
     @Test
     public void testSimpleNoHint() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17"); //NOI18N
-        } catch (IllegalArgumentException ex) {
-            //OK, no RELEASE_17, skip tests
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -103,19 +90,12 @@
                         + "}\n"
                 )
                 .sourceLevel("17")
-                .options("--enable-preview")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .assertNotContainsWarnings(Bundle.ERR_ConvertToSwitchPatternInstanceOf());
     }
     
     @Test
     public void testSimplePatternMatch() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -133,8 +113,7 @@
                         + "        return formatted;\n"
                         + "    }"
                         + "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .findWarning("4:8-4:10:verifier:" + Bundle.ERR_ConvertToSwitchPatternInstanceOf())
                 .applyFix()
@@ -158,12 +137,6 @@
     
     @Test
     public void testSimplePatternMatchNoHint() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -181,20 +154,13 @@
                         + "        return formatted;\n"
                         + "    }"
                         + "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .assertNotContainsWarnings(Bundle.ERR_ConvertToSwitchPatternInstanceOf());
     }
 
     @Test
     public void testSimpleSwitchWithNull() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -217,8 +183,7 @@
                         + "        return formatted;\n"
                         + "    }"
                         + "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .findWarning("4:8-4:24:verifier:" + Bundle.ERR_ConvertToSwitchPatternInstanceOf())
                 .applyFix()
@@ -247,12 +212,6 @@
     
     @Test
     public void testSimpleSwitchWithNullNoHint() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -275,20 +234,13 @@
                         + "        return formatted;\n"
                         + "    }"
                         + "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .assertNotContainsWarnings(Bundle.ERR_ConvertToSwitchPatternInstanceOf());
     }
 
     @Test
     public void testSingleStatementsStaticVariable() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -312,8 +264,7 @@
                         + "class Test2{\n"
                         + "     public static Object a;\n"
                         + "}")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .findWarning("4:8-4:10:verifier:" + Bundle.ERR_ConvertToSwitchPatternInstanceOf())
                 .applyFix()
@@ -342,12 +293,6 @@
 
     @Test
     public void testMultipleStatements() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -372,8 +317,7 @@
                         + "        return -1;\n"
                         + "    }"
                         + "}\n")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .findWarning("4:8-4:10:verifier:" + Bundle.ERR_ConvertToSwitchPatternInstanceOf())
                 .applyFix()
@@ -407,12 +351,6 @@
 
     @Test
     public void testEmptyStatementsMethodInvocation() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17");
-        } catch (IllegalArgumentException ex) {
-            //OK, skip test
-            return;
-        }
         HintTest.create()
                 .input("package test;\n"
                         + "public class Test {\n"
@@ -436,8 +374,7 @@
                         + "         return \"method invocation\";\n"
                         + "     }"
                         + "}")
-                .sourceLevel(SourceVersion.latest().name())
-                .options("--enable-preview")
+                .sourceLevel("21")
                 .run(ConvertToSwitchPatternInstanceOf.class)
                 .findWarning("4:8-4:10:verifier:" + Bundle.ERR_ConvertToSwitchPatternInstanceOf())
                 .applyFix()
diff --git a/java/java.source.base/nbproject/org-netbeans-modules-java-source-base.sig b/java/java.source.base/nbproject/org-netbeans-modules-java-source-base.sig
index c2d9f6e..632d461 100644
--- a/java/java.source.base/nbproject/org-netbeans-modules-java-source-base.sig
+++ b/java/java.source.base/nbproject/org-netbeans-modules-java-source-base.sig
@@ -1,9 +1,10 @@
 #Signature file v4.1
-#Version 2.61.0
+#Version 2.63.0
 
 CLSS public abstract interface com.sun.source.tree.TreeVisitor<%0 extends java.lang.Object, %1 extends java.lang.Object>
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.tree.TreeVisitor%1})
@@ -50,12 +51,12 @@
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.tree.TreeVisitor%1})
-meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.tree.TreeVisitor%1})
@@ -87,6 +88,7 @@
 meth public {com.sun.source.util.TreeScanner%0} scan(java.lang.Iterable<? extends com.sun.source.tree.Tree>,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.util.TreeScanner%1})
@@ -133,12 +135,12 @@
 meth public {com.sun.source.util.TreeScanner%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.util.TreeScanner%1})
-meth public {com.sun.source.util.TreeScanner%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.util.TreeScanner%1})
@@ -1344,6 +1346,8 @@
 meth public com.sun.source.tree.CaseTree Case(com.sun.source.tree.ExpressionTree,java.util.List<? extends com.sun.source.tree.StatementTree>)
 meth public com.sun.source.tree.CaseTree Case(java.util.List<? extends com.sun.source.tree.ExpressionTree>,com.sun.source.tree.Tree)
 meth public com.sun.source.tree.CaseTree CaseMultipleLabels(java.util.List<? extends com.sun.source.tree.ExpressionTree>,java.util.List<? extends com.sun.source.tree.StatementTree>)
+meth public com.sun.source.tree.CaseTree CasePatterns(java.util.List<? extends com.sun.source.tree.Tree>,com.sun.source.tree.ExpressionTree,com.sun.source.tree.Tree)
+meth public com.sun.source.tree.CaseTree CasePatterns(java.util.List<? extends com.sun.source.tree.Tree>,com.sun.source.tree.ExpressionTree,java.util.List<? extends com.sun.source.tree.StatementTree>)
 meth public com.sun.source.tree.CaseTree CasePatterns(java.util.List<? extends com.sun.source.tree.Tree>,com.sun.source.tree.Tree)
 meth public com.sun.source.tree.CaseTree CasePatterns(java.util.List<? extends com.sun.source.tree.Tree>,java.util.List<? extends com.sun.source.tree.StatementTree>)
 meth public com.sun.source.tree.CaseTree addCaseStatement(com.sun.source.tree.CaseTree,com.sun.source.tree.StatementTree)
diff --git a/java/java.source.base/src/org/netbeans/api/java/source/SourceUtils.java b/java/java.source.base/src/org/netbeans/api/java/source/SourceUtils.java
index dfb0279..c01c35f 100644
--- a/java/java.source.base/src/org/netbeans/api/java/source/SourceUtils.java
+++ b/java/java.source.base/src/org/netbeans/api/java/source/SourceUtils.java
@@ -49,8 +49,10 @@
 import com.sun.source.util.Trees;
 import com.sun.tools.javac.api.JavacTaskImpl;
 import com.sun.tools.javac.code.Flags;
+import com.sun.tools.javac.code.Preview;
 import com.sun.tools.javac.code.Scope.NamedImportScope;
 import com.sun.tools.javac.code.Scope.StarImportScope;
+import com.sun.tools.javac.code.Source;
 import com.sun.tools.javac.code.Symbol;
 import com.sun.tools.javac.code.Symbol.*;
 import com.sun.tools.javac.code.Type;
@@ -85,6 +87,7 @@
 import org.netbeans.api.java.source.matching.Pattern;
 import org.netbeans.api.lexer.TokenHierarchy;
 import org.netbeans.api.lexer.TokenSequence;
+import org.netbeans.lib.nbjavac.services.NBNames;
 import org.netbeans.modules.java.preprocessorbridge.spi.ImportProcessor;
 import org.netbeans.modules.java.source.ElementHandleAccessor;
 import org.netbeans.modules.java.source.ElementUtils;
@@ -1023,30 +1026,82 @@
      * @return true when the method is a main method
      */
     public static boolean isMainMethod (final ExecutableElement method) {
+        if (!mainCandidate(method)) {
+            return false;
+        }
+
+        Context ctx = ((NBNames) ((Symbol.MethodSymbol)method).name.table.names).getContext();
+        Source source = Source.instance(ctx);
+        Preview preview = Preview.instance(ctx);
+
+        if (source.compareTo(Source.JDK21) < 0 || !preview.isEnabled()) {
+            long flags = ((Symbol.MethodSymbol)method).flags();
+
+            if (((flags & Flags.PUBLIC) == 0) || ((flags & Flags.STATIC) == 0)) {
+                return false;
+            }
+            return !method.getParameters().isEmpty();
+        }
+
+        //new launch prototocol from JEP 445:
+        int currentMethodPriority = mainMethodPriority(method);
+        int highestPriority = Integer.MAX_VALUE;
+
+        for (ExecutableElement sibling : ElementFilter.methodsIn(method.getEnclosingElement().getEnclosedElements())) {
+            highestPriority = Math.min(highestPriority, mainMethodPriority(sibling));
+        }
+
+        return currentMethodPriority == highestPriority;
+    }
+
+    private static boolean mainCandidate(ExecutableElement method) {
         if (!"main".contentEquals(method.getSimpleName())) {                //NOI18N
             return false;
         }
-        long flags = ((Symbol.MethodSymbol)method).flags();                 //faster
-        if (((flags & Flags.PUBLIC) == 0) || ((flags & Flags.STATIC) == 0)) {
+        long flags = ((Symbol.MethodSymbol)method).flags();
+        if ((flags & Flags.PRIVATE) != 0) {
             return false;
         }
         if (method.getReturnType().getKind() != TypeKind.VOID) {
             return false;
         }
         List<? extends VariableElement> params = method.getParameters();
-        if (params.size() != 1) {
+        if (params.size() > 1) {
             return false;
+        } else if (params.size() == 1) {
+            TypeMirror param = params.get(0).asType();
+            if (param.getKind() != TypeKind.ARRAY) {
+                return false;
+            }
+            ArrayType array = (ArrayType) param;
+            TypeMirror compound = array.getComponentType();
+            if (compound.getKind() != TypeKind.DECLARED) {
+                return false;
+            }
+            if (!"java.lang.String".contentEquals(((TypeElement)((DeclaredType)compound).asElement()).getQualifiedName())) {    //NOI18N
+                return false;
+            }
         }
-        TypeMirror param = params.get(0).asType();
-        if (param.getKind() != TypeKind.ARRAY) {
-            return false;
+        return true;
+    }
+
+    private static int mainMethodPriority(ExecutableElement method) {
+        long flags = ((Symbol.MethodSymbol)method).flags();
+        boolean isStatic = (flags & Flags.STATIC) != 0;
+        boolean hasParams = !method.getParameters().isEmpty();
+        if (isStatic) {
+            if (hasParams) {
+                return 0;
+            } else {
+                return 1;
+            }
+        } else {
+            if (hasParams) {
+                return 2;
+            } else {
+                return 3;
+            }
         }
-        ArrayType array = (ArrayType) param;
-        TypeMirror compound = array.getComponentType();
-        if (compound.getKind() != TypeKind.DECLARED) {
-            return false;
-        }
-        return "java.lang.String".contentEquals(((TypeElement)((DeclaredType)compound).asElement()).getQualifiedName());   //NOI18N
     }
 
     /**
diff --git a/java/java.source.base/src/org/netbeans/api/java/source/TreeMaker.java b/java/java.source.base/src/org/netbeans/api/java/source/TreeMaker.java
index e45ae80..c1d408d 100644
--- a/java/java.source.base/src/org/netbeans/api/java/source/TreeMaker.java
+++ b/java/java.source.base/src/org/netbeans/api/java/source/TreeMaker.java
@@ -276,10 +276,23 @@
      * @since 2.39
      */
     public CaseTree CasePatterns(List<? extends Tree> patterns, Tree body) {
-        return delegate.CaseMultiplePatterns(toCaseLabelTrees(patterns), body);
+        return delegate.CaseMultiplePatterns(toCaseLabelTrees(patterns), null, body);
     }
     
     /**
+     * Creates a new CaseTree for a rule case (case &lt;constants&gt; -> &lt;body&gt;).
+     *
+     * @param patterns the labels for this case statement.
+     * @param guard the case's guard
+     * @param body the case's body
+     * @see com.sun.source.tree.CaseTree
+     * @since 2.63
+     */
+    public CaseTree CasePatterns(List<? extends Tree> patterns, ExpressionTree guard, Tree body) {
+        return delegate.CaseMultiplePatterns(toCaseLabelTrees(patterns), guard, body);
+    }
+
+    /**
      * Creates a new CaseTree.
      *
      * @param patterns the labels for this case statement.
@@ -288,7 +301,20 @@
      * @since 2.39
      */
     public CaseTree CasePatterns(List<? extends Tree> patterns, List<? extends StatementTree> statements) {
-        return delegate.CaseMultiplePatterns(toCaseLabelTrees(patterns), statements);
+        return delegate.CaseMultiplePatterns(toCaseLabelTrees(patterns), null, statements);
+    }
+
+    /**
+     * Creates a new CaseTree.
+     *
+     * @param patterns the labels for this case statement.
+     * @param guard the case's guard
+     * @param statements the list of statements.
+     * @see com.sun.source.tree.CaseTree
+     * @since 2.63
+     */
+    public CaseTree CasePatterns(List<? extends Tree> patterns, ExpressionTree guard, List<? extends StatementTree> statements) {
+        return delegate.CaseMultiplePatterns(toCaseLabelTrees(patterns), guard, statements);
     }
 
     private List<? extends CaseLabelTree> toCaseLabelTrees(List<? extends Tree> patterns) {
@@ -300,7 +326,7 @@
                 return delegate.ConstantCaseLabel((ExpressionTree) p);
             }
             if (p instanceof PatternTree) {
-                return delegate.PatternCaseLabel((PatternTree) p, null);
+                return delegate.PatternCaseLabel((PatternTree) p);
             }
             throw new IllegalArgumentException("Invalid pattern kind: " + p.getKind()); //NOI18N
         }).collect(Collectors.toList());
diff --git a/java/java.source.base/src/org/netbeans/api/java/source/TreeUtilities.java b/java/java.source.base/src/org/netbeans/api/java/source/TreeUtilities.java
index d1c917c..2616467 100644
--- a/java/java.source.base/src/org/netbeans/api/java/source/TreeUtilities.java
+++ b/java/java.source.base/src/org/netbeans/api/java/source/TreeUtilities.java
@@ -359,9 +359,22 @@
             public Void scan(Tree tree, Void p) {
                 if (tree != null) {
                     long endPos = sourcePositions.getEndPosition(getCurrentPath().getCompilationUnit(), tree);
-                    if (endPos == (-1) && tree.getKind() == Kind.ASSIGNMENT && getCurrentPath().getLeaf().getKind() == Kind.ANNOTATION) {
-                        ExpressionTree value = ((AssignmentTree) tree).getExpression();
-                        endPos = sourcePositions.getEndPosition(getCurrentPath().getCompilationUnit(), value);
+                    if (endPos == (-1)) {
+                        switch (tree.getKind()) {
+                            case ASSIGNMENT:
+                                if (getCurrentPath().getLeaf().getKind() == Kind.ANNOTATION) {
+                                    ExpressionTree value = ((AssignmentTree) tree).getExpression();
+                                    endPos = sourcePositions.getEndPosition(getCurrentPath().getCompilationUnit(), value);
+                                }
+                                break;
+                            case CLASS:
+                                ClassTree clazz = (ClassTree) tree;
+
+                                if (!clazz.getMembers().isEmpty()) {
+                                    endPos = sourcePositions.getEndPosition(getCurrentPath().getCompilationUnit(), clazz.getMembers().get(clazz.getMembers().size() - 1));
+                                }
+                                break;
+                        }
                     }
                     if (sourcePositions.getStartPosition(getCurrentPath().getCompilationUnit(), tree) < pos && endPos >= pos) {
                         if (tree.getKind() == Tree.Kind.ERRONEOUS) {
diff --git a/java/java.source.base/src/org/netbeans/api/java/source/TypeMirrorHandle.java b/java/java.source.base/src/org/netbeans/api/java/source/TypeMirrorHandle.java
index 95c82ac..6622c08 100644
--- a/java/java.source.base/src/org/netbeans/api/java/source/TypeMirrorHandle.java
+++ b/java/java.source.base/src/org/netbeans/api/java/source/TypeMirrorHandle.java
@@ -417,10 +417,10 @@
         private Type delegate = null;
         
         public PlaceholderType() {
-            this(TypeMetadata.EMPTY);
+            this(com.sun.tools.javac.util.List.nil());
         }       
 
-        public PlaceholderType(TypeMetadata md) {
+        public PlaceholderType(com.sun.tools.javac.util.List<TypeMetadata> md) {
             super(null, md);
         }       
 
@@ -430,7 +430,7 @@
         }
 
         @Override
-        public Type cloneWithMetadata(TypeMetadata md) {
+        public Type cloneWithMetadata(com.sun.tools.javac.util.List<TypeMetadata> md) {
             PlaceholderType out = new PlaceholderType(md);
             out.delegate = delegate;
             return out;
diff --git a/java/java.source.base/src/org/netbeans/api/java/source/support/ErrorAwareTreePathScanner.java b/java/java.source.base/src/org/netbeans/api/java/source/support/ErrorAwareTreePathScanner.java
index 31b3376..6701042 100644
--- a/java/java.source.base/src/org/netbeans/api/java/source/support/ErrorAwareTreePathScanner.java
+++ b/java/java.source.base/src/org/netbeans/api/java/source/support/ErrorAwareTreePathScanner.java
@@ -37,6 +37,7 @@
     @Override
     public R visitCase(CaseTree node, P p) {
         R r = scan(node.getLabels(), p);
+        r = reduce(scan(node.getGuard(), p), r);
         if (node.getCaseKind() == CaseKind.STATEMENT) {
             r = reduce(scan(node.getStatements(), p), r);
         } else {
diff --git a/java/java.source.base/src/org/netbeans/api/java/source/support/ErrorAwareTreeScanner.java b/java/java.source.base/src/org/netbeans/api/java/source/support/ErrorAwareTreeScanner.java
index 1208f99..ce4e2bc 100644
--- a/java/java.source.base/src/org/netbeans/api/java/source/support/ErrorAwareTreeScanner.java
+++ b/java/java.source.base/src/org/netbeans/api/java/source/support/ErrorAwareTreeScanner.java
@@ -37,6 +37,7 @@
     @Override
     public R visitCase(CaseTree node, P p) {
         R r = scan(node.getLabels(), p);
+        r = reduce(scan(node.getGuard(), p), r);
         if (node.getCaseKind() == CaseKind.STATEMENT) {
             r = reduce(scan(node.getStatements(), p), r);
         } else {
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/NoJavacHelper.java b/java/java.source.base/src/org/netbeans/modules/java/source/NoJavacHelper.java
index dc6cd0e..a5bad37 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/NoJavacHelper.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/NoJavacHelper.java
@@ -34,7 +34,7 @@
  */
 public class NoJavacHelper {
 
-    public static final int REQUIRED_JAVAC_VERSION = 20; // <- TODO: increment on every release
+    public static final int REQUIRED_JAVAC_VERSION = 21; // <- TODO: increment on every release
     private static final boolean HAS_WORKING_JAVAC;
 
     static {
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/builder/TreeFactory.java b/java/java.source.base/src/org/netbeans/modules/java/source/builder/TreeFactory.java
index cc26ed5..e31b469 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/builder/TreeFactory.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/builder/TreeFactory.java
@@ -218,8 +218,18 @@
         return make.at(NOPOS).ConstantCaseLabel((JCExpression) expr);
     }
 
-    public PatternCaseLabelTree PatternCaseLabel(PatternTree pat, ExpressionTree guard) {
-        return make.at(NOPOS).PatternCaseLabel((JCPattern) pat, (JCExpression) guard);
+    public PatternCaseLabelTree PatternCaseLabel(PatternTree pat) {
+        return make.at(NOPOS).PatternCaseLabel((JCPattern) pat);
+    }
+
+    public StringTemplateTree StringTemplate(ExpressionTree processor, List<String> fragments, List<? extends ExpressionTree> expressions) {
+        return make.at(NOPOS).StringTemplate((JCExpression) processor,
+                                             fragments.stream().collect(com.sun.tools.javac.util.List.collector()),
+                                             expressions.stream().map(expr -> (JCExpression) expr).collect(com.sun.tools.javac.util.List.collector()));
+    }
+
+    public AnyPatternTree AnyPattern() {
+        return make.at(NOPOS).AnyPattern();
     }
 
     public DeconstructionPatternTree DeconstructionPattern(ExpressionTree deconstructor, List<? extends PatternTree> nested) {
@@ -234,31 +244,31 @@
     }
     
     public CaseTree Case(List<? extends ExpressionTree> expressions, List<? extends StatementTree> statements) {
-        return CaseMultiplePatterns(expressions.isEmpty() ? Collections.singletonList(DefaultCaseLabel()) : expressions.stream().map(e -> ConstantCaseLabel(e)).collect(Collectors.toList()), statements);
+        return CaseMultiplePatterns(expressions.isEmpty() ? Collections.singletonList(DefaultCaseLabel()) : expressions.stream().map(e -> ConstantCaseLabel(e)).collect(Collectors.toList()), null, statements);
     }
     
     public CaseTree Case(List<? extends ExpressionTree> expressions, Tree body) {
-        return CaseMultiplePatterns(expressions.isEmpty() ? Collections.singletonList(DefaultCaseLabel()) : expressions.stream().map(e -> ConstantCaseLabel(e)).collect(Collectors.toList()), body);
+        return CaseMultiplePatterns(expressions.isEmpty() ? Collections.singletonList(DefaultCaseLabel()) : expressions.stream().map(e -> ConstantCaseLabel(e)).collect(Collectors.toList()), null, body);
     }
     
-    public CaseTree CaseMultiplePatterns(List<? extends CaseLabelTree> expressions, Tree body) {
+    public CaseTree CaseMultiplePatterns(List<? extends CaseLabelTree> expressions, ExpressionTree guard, Tree body) {
         ListBuffer<JCStatement> lb = new ListBuffer<>();
         lb.append(body instanceof ExpressionTree ? (JCStatement) Yield((ExpressionTree) body) : (JCStatement) body);
         ListBuffer<JCCaseLabel> exprs = new ListBuffer<>();
         for (Tree t : expressions)
             exprs.append((JCCaseLabel)t);
-        return make.at(NOPOS).Case(CaseKind.RULE, exprs.toList(), lb.toList(), (JCTree) body);
+        return make.at(NOPOS).Case(CaseKind.RULE, exprs.toList(), (JCExpression) guard, lb.toList(), (JCTree) body);
     }
     
 
-    public CaseTree CaseMultiplePatterns(List<? extends CaseLabelTree> expressions, List<? extends StatementTree> statements) {
+    public CaseTree CaseMultiplePatterns(List<? extends CaseLabelTree> expressions, ExpressionTree guard, List<? extends StatementTree> statements) {
         ListBuffer<JCStatement> lb = new ListBuffer<JCStatement>();
         for (StatementTree t : statements)
             lb.append((JCStatement)t);
         ListBuffer<JCCaseLabel> exprs = new ListBuffer<>();
         for (Tree t : expressions)
             exprs.append((JCCaseLabel)t);
-        return make.at(NOPOS).Case(CaseKind.STATEMENT, exprs.toList(), lb.toList(), null);
+        return make.at(NOPOS).Case(CaseKind.STATEMENT, exprs.toList(), (JCExpression) guard, lb.toList(), null);
     }
     
     public CatchTree Catch(VariableTree parameter, BlockTree block) {
@@ -467,7 +477,16 @@
     }
     
     public ImportTree Import(Tree qualid, boolean importStatic) {
-        return make.at(NOPOS).Import((JCTree)qualid, importStatic);
+        if (qualid.getKind() == Kind.IDENTIFIER) {
+            //existing code sometimes sends the FQN as an identifier:
+            String fqn = ((IdentifierTree) qualid).getName().toString();
+            int lastDot = fqn.lastIndexOf('.');
+            if (lastDot != (-1)) {
+                qualid = make.Select(make.Ident(names.fromString(fqn.substring(0, lastDot))),
+                                     names.fromString(fqn.substring(lastDot + 1)));
+            }
+        }
+        return make.at(NOPOS).Import((JCFieldAccess)qualid, importStatic);
     }
     
     public InstanceOfTree InstanceOf(ExpressionTree expression, Tree type) {
@@ -925,10 +944,6 @@
         return make.at(NOPOS).BindingPattern((JCVariableDecl) vt);
     }
 
-    public ParenthesizedPatternTree ParenthesizedPattern(PatternTree pattern) {
-        return make.at(NOPOS).ParenthesizedPattern((JCPattern) pattern);
-    }
-
     public VariableTree Variable(VariableElement variable, ExpressionTree initializer) {
         return make.at(NOPOS).VarDef((Symbol.VarSymbol)variable, (JCExpression)initializer);
     }
@@ -1025,8 +1040,9 @@
     }
     
     private CaseTree modifyCaseStatement(CaseTree kejs, int index, StatementTree statement, Operation op) {
-        CaseTree copy = Case(
-                kejs.getExpression(),
+        CaseTree copy = CaseMultiplePatterns(
+                kejs.getLabels(),
+                kejs.getGuard(),
                 c(kejs.getStatements(), index, statement, op)
         );
         return copy;
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/indexing/VanillaCompileWorker.java b/java/java.source.base/src/org/netbeans/modules/java/source/indexing/VanillaCompileWorker.java
index dcc3999..c4ff210 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/indexing/VanillaCompileWorker.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/indexing/VanillaCompileWorker.java
@@ -45,7 +45,7 @@
 import com.sun.tools.javac.code.Attribute;
 import com.sun.tools.javac.code.Flags;
 import com.sun.tools.javac.code.Kinds.Kind;
-import com.sun.tools.javac.code.Preview;
+import com.sun.tools.javac.code.Source;
 import com.sun.tools.javac.code.Source.Feature;
 import com.sun.tools.javac.code.Symbol;
 import com.sun.tools.javac.code.Symbol.ClassSymbol;
@@ -546,7 +546,7 @@
         Types types = Types.instance(ctx);
         TreeMaker make = TreeMaker.instance(ctx);
         Elements el = JavacElements.instance(ctx);
-        Preview preview = Preview.instance(ctx);
+        Source source = Source.instance(ctx);
         boolean hasMatchException = el.getTypeElement("java.lang.MatchException") != null;
         //TODO: should preserve error types!!!
         new TreePathScanner<Void, Void>() {
@@ -938,7 +938,7 @@
             }
 
             private void handleSwitch(boolean patternSwitch) {
-                if (patternSwitch && !preview.isEnabled() && preview.isPreview(Feature.PATTERN_SWITCH)) {
+                if (patternSwitch && !Feature.PATTERN_SWITCH.allowedInSource(source)) {
                     errorFound = true;
                 }
             }
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/parsing/JavacParser.java b/java/java.source.base/src/org/netbeans/modules/java/source/parsing/JavacParser.java
index b740131..1dfe9e2 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/parsing/JavacParser.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/parsing/JavacParser.java
@@ -106,6 +106,7 @@
 import org.netbeans.lib.nbjavac.services.NBClassWriter;
 import org.netbeans.lib.nbjavac.services.NBJavacTrees;
 import org.netbeans.lib.nbjavac.services.NBLog;
+import org.netbeans.lib.nbjavac.services.NBNames;
 import org.netbeans.lib.nbjavac.services.NBResolve;
 import org.netbeans.lib.nbjavac.services.NBTreeMaker;
 import org.netbeans.modules.java.source.base.SourceLevelUtils;
@@ -1051,6 +1052,7 @@
         Context context = new Context();
         //need to preregister the Messages here, because the getTask below requires Log instance:
         NBLog.preRegister(context, DEV_NULL);
+        NBNames.preRegister(context);
         JavacTaskImpl task = (JavacTaskImpl)JavacTool.create().getTask(null,
                 ClasspathInfoAccessor.getINSTANCE().createFileManager(cpInfo, validatedSourceLevel.name),
                 diagnosticListener, options, files.iterator().hasNext() ? null : Arrays.asList("java.lang.Object"), files,
@@ -1237,6 +1239,8 @@
                 res.add(option);
             } else if (option.equals("--enable-preview")) {     //NOI18N
                 res.add(option);
+            } else if (option.equals("-XDrawDiagnostics")) {     //NOI18N
+                res.add(option);
             } else if ((
                     option.startsWith("--add-modules") ||   //NOI18N
                     option.startsWith("--limit-modules") || //NOI18N
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/pretty/VeryPretty.java b/java/java.source.base/src/org/netbeans/modules/java/source/pretty/VeryPretty.java
index a09f44c..9c94b6f 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/pretty/VeryPretty.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/pretty/VeryPretty.java
@@ -1342,6 +1342,11 @@
                 printNoParenExpr(lab);
                 sep = ", "; //TODO: space or not should be a configuration setting
             }
+            if (tree.getGuard() != null) {
+                needSpace();
+                print("when ");
+                print(tree.getGuard());
+            }
         }
         Object caseKind = tree.getCaseKind();
         if (caseKind == null || !String.valueOf(caseKind).equals("RULE")) {
@@ -2072,15 +2077,6 @@
     }
 
     @Override
-    public void visitPatternCaseLabel(JCPatternCaseLabel tree) {
-        print(tree.pat);
-        if (tree.guard != null) {
-            print(" when ");
-            printExpr(tree.guard);
-        }
-    }
-
-    @Override
     public void visitLetExpr(LetExpr tree) {
 	print("(let " + tree.defs + " in " + tree.expr + ")");
     }
@@ -2095,7 +2091,12 @@
         print("(UNKNOWN: " + tree + ")");
         newline();
     }
-    
+
+    @Override
+    public void visitPatternCaseLabel(JCPatternCaseLabel tree) {
+        print(tree.pat);
+    }
+
     @Override
     public void visitRecordPattern(JCRecordPattern tree) {
         print(tree.deconstructor);
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/save/CasualDiff.java b/java/java.source.base/src/org/netbeans/modules/java/source/save/CasualDiff.java
index 5d2807f..b6fc532 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/save/CasualDiff.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/save/CasualDiff.java
@@ -947,8 +947,9 @@
         int insertHint = localPointer;
         List<JCTree> filteredOldTDefs = filterHidden(oldT.defs);
         List<JCTree> filteredNewTDefs = filterHidden(newT.defs);
-        // skip the section when printing anonymous class
-        if (anonClass == false) {
+        boolean unnamed = (oldT.mods.flags & Flags.UNNAMED_CLASS) != 0;
+        // skip the section when printing anonymous or unnamed class
+        if (anonClass == false && !unnamed) {
         tokenSequence.move(oldT.pos);
         tokenSequence.moveNext(); // First skip as move() does not position to token directly
         tokenSequence.moveNext();
@@ -1067,7 +1068,7 @@
         tokenSequence.move(insertHint);
         tokenSequence.moveNext();
         insertHint = moveBackToToken(tokenSequence, insertHint, JavaTokenId.LBRACE) + 1;
-        } else {
+        } else if (!unnamed) {
             insertHint = moveFwdToToken(tokenSequence, oldT.getKind() == Kind.ENUM ? localPointer : getOldPos(oldT), JavaTokenId.LBRACE);
             tokenSequence.moveNext();
             insertHint = tokenSequence.offset();
@@ -1879,9 +1880,9 @@
     protected int diffForeachLoop(JCEnhancedForLoop oldT, JCEnhancedForLoop newT, int[] bounds) {
         int localPointer = bounds[0];
         // variable
-        int[] varBounds = getBounds(oldT.varOrRecordPattern);
+        int[] varBounds = getBounds(oldT.var);
         copyTo(localPointer, varBounds[0]);
-        localPointer = diffTree(oldT.varOrRecordPattern, newT.varOrRecordPattern, varBounds);
+        localPointer = diffTree(oldT.var, newT.var, varBounds);
         // expression
         int[] exprBounds = getBounds(oldT.expr);
         copyTo(localPointer, exprBounds[0]);
@@ -2017,6 +2018,15 @@
         copyTo(localPointer, copyTo);
         localPointer = diffList2(oldPatterns, newPatterns, posHint, patternEst);
         tokenSequence.move(endpos);
+        if (oldT.guard != null && newT.guard != null) {
+            int[] guardBounds = getBounds(oldT.guard);
+            copyTo(localPointer, guardBounds[0]);
+            diffTree(oldT.guard, newT.guard, guardBounds);
+        } else if (oldT.guard != null && newT.guard == null) {
+            //TODO:
+        } else if (oldT.guard == null && newT.guard != null) {
+            //TODO:
+        }
         do { } while (tokenSequence.moveNext() && JavaTokenId.COLON != tokenSequence.token().id() && JavaTokenId.ARROW != tokenSequence.token().id());
         boolean reindentStatements = false;
         if (Objects.equals(oldT.getCaseKind(), newT.getCaseKind())) {
@@ -5856,7 +5866,7 @@
     }
 
     private boolean matchForeachLoop(JCEnhancedForLoop t1, JCEnhancedForLoop t2) {
-        return treesMatch(t1.varOrRecordPattern, t2.varOrRecordPattern) &&
+        return treesMatch(t1.var, t2.var) &&
                treesMatch(t1.expr, t2.expr) &&
                treesMatch(t1.body, t2.body);
     }
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/save/PositionEstimator.java b/java/java.source.base/src/org/netbeans/modules/java/source/save/PositionEstimator.java
index cc9d432..40a91a3 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/save/PositionEstimator.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/save/PositionEstimator.java
@@ -18,10 +18,12 @@
  */
 package org.netbeans.modules.java.source.save;
 
+import com.sun.source.tree.ClassTree;
 import com.sun.source.tree.CompilationUnitTree;
 import com.sun.source.tree.ExpressionTree;
 import com.sun.source.tree.ImportTree;
 import com.sun.source.tree.Tree;
+import com.sun.source.tree.Tree.Kind;
 import com.sun.source.tree.VariableTree;
 import com.sun.source.util.SourcePositions;
 import com.sun.tools.javac.code.Flags;
@@ -1515,7 +1517,18 @@
             for (Tree item : oldL) {
                 int treeStart = (int) positions.getStartPosition(compilationUnit, item);
                 int treeEnd = (int) positions.getEndPosition(compilationUnit, item);
-                
+
+                if (treeEnd == (-1) && item.getKind() == Kind.CLASS) {
+                    //unnamed class, use last member, or start pos:
+                    ClassTree clazz = (ClassTree) item;
+                    Tree lastMember = clazz.getMembers().get(clazz.getMembers().size() - 1);
+                    treeEnd = (int) positions.getEndPosition(compilationUnit, lastMember);
+                    if (treeEnd == (-1)) {
+                        //TODO: test
+                        treeEnd = treeStart;
+                    }
+                }
+
                 seq.move(treeStart);
                 seq.moveNext();
                 if (null != moveToSrcRelevant(seq, Direction.BACKWARD)) {
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/save/Reformatter.java b/java/java.source.base/src/org/netbeans/modules/java/source/save/Reformatter.java
index 94faa1a..361daf7 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/save/Reformatter.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/save/Reformatter.java
@@ -2817,10 +2817,6 @@
         @Override
         public Boolean visitPatternCaseLabel(PatternCaseLabelTree node, Void p) {
             scan(node.getPattern(), p);
-            space();
-            accept(IDENTIFIER);
-            space();
-            scan(node.getGuard(), p);
             return true;
         }
 
@@ -2835,16 +2831,6 @@
             return true;
         }
 
-        @Override
-        public Boolean visitParenthesizedPattern(ParenthesizedPatternTree node, Void p) {
-            accept(LPAREN);
-            spaces(0);
-            scan(node.getPattern(), p);
-            spaces(0);
-            accept(RPAREN);
-            return true;
-        }
-
         private boolean handleSwitch(Tree node, Void p) {
             ExpressionTree selExpr;
             List<? extends CaseTree> cases;
@@ -2975,6 +2961,12 @@
                             space();
                         }
                     }
+                    if (node.getGuard() != null) {
+                        space();
+                        accept(IDENTIFIER);
+                        space();
+                        scan(node.getGuard(), p);
+                    }
                 }
             } else if (!node.getExpressions().isEmpty()) {
                 List<? extends ExpressionTree> exprs = node.getExpressions();
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/transform/ImmutableTreeTranslator.java b/java/java.source.base/src/org/netbeans/modules/java/source/transform/ImmutableTreeTranslator.java
index d672202..7182ff7 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/transform/ImmutableTreeTranslator.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/transform/ImmutableTreeTranslator.java
@@ -607,10 +607,6 @@
         return rewriteChildren(tree);
     }
     @Override
-    public Tree visitParenthesizedPattern(ParenthesizedPatternTree tree, Object p) {
-        return rewriteChildren(tree);
-    }
-    @Override
     public Tree visitSwitchExpression(SwitchExpressionTree tree, Object p) {
         return rewriteChildren(tree);
     }
@@ -619,6 +615,14 @@
         return rewriteChildren(tree);
     }
     @Override
+    public Tree visitStringTemplate(StringTemplateTree tree, Object p) {
+        return rewriteChildren(tree);
+    }
+    @Override
+    public Tree visitAnyPattern(AnyPatternTree tree, Object p) {
+        return rewriteChildren(tree);
+    }
+    @Override
     public Tree visitOther(Tree tree, Object p) {
 	throw new Error("Tree not overloaded: "+tree);
     }
@@ -903,11 +907,12 @@
         List<? extends CaseLabelTree> labels = tree.getLabels();
         if (body == null) {
             List<? extends CaseLabelTree> pats = translate(labels);
+            ExpressionTree newGuard = (ExpressionTree) translate(tree.getGuard());
             List<? extends StatementTree> stats = translate(tree.getStatements());
-            if (!pats.equals(labels) || !stats.equals(tree.getStatements())) {
+            if (!pats.equals(labels) || tree.getGuard() != newGuard || !stats.equals(tree.getStatements())) {
                 if (stats != tree.getStatements())
                     stats = optimize(stats);
-                CaseTree n = make.CaseMultiplePatterns(pats, stats);
+                CaseTree n = make.CaseMultiplePatterns(pats, newGuard, stats);
                 model.setType(n, model.getType(tree));
                 copyCommentTo(tree,n);
                 copyPosTo(tree,n);
@@ -915,9 +920,10 @@
             }
         } else {
             List<? extends CaseLabelTree> pats = translate(labels);
+            ExpressionTree newGuard = (ExpressionTree) translate(tree.getGuard());
             Tree nueBody = translate(body);
-            if (!pats.equals(labels) || body != nueBody) {
-                CaseTree n = make.CaseMultiplePatterns(pats, nueBody);
+            if (!pats.equals(labels) || tree.getGuard() != newGuard || body != nueBody) {
+                CaseTree n = make.CaseMultiplePatterns(pats, newGuard, nueBody);
                 model.setType(n, model.getType(tree));
                 copyCommentTo(tree,n);
                 copyPosTo(tree,n);
@@ -1515,10 +1521,9 @@
     }
 
     private PatternCaseLabelTree rewriteChildren(PatternCaseLabelTree tree) {
-        ExpressionTree newGuard = (ExpressionTree) translate(tree.getGuard());
         PatternTree newPattern = (PatternTree) translate(tree.getPattern());
-        if (newGuard != tree.getGuard() || newPattern != tree.getPattern()) {
-            PatternCaseLabelTree n = make.PatternCaseLabel(newPattern, newGuard);
+        if (newPattern != tree.getPattern()) {
+            PatternCaseLabelTree n = make.PatternCaseLabel(newPattern);
             model.setType(n, model.getType(tree));
             copyCommentTo(tree, n);
             copyPosTo(tree, n);
@@ -1540,10 +1545,11 @@
         return tree;
     }
 
-    private ParenthesizedPatternTree rewriteChildren(ParenthesizedPatternTree tree) {
-        PatternTree newPattern = (PatternTree) translate(tree.getPattern());
-        if (newPattern != tree.getPattern()) {
-            ParenthesizedPatternTree n = make.ParenthesizedPattern(newPattern);
+    private StringTemplateTree rewriteChildren(StringTemplateTree tree) {
+        ExpressionTree newProcessor = (ExpressionTree) translate(tree.getProcessor());
+        List<? extends ExpressionTree> newExpressions = translate(tree.getExpressions());
+        if (newProcessor != tree.getProcessor()|| !Objects.equals(newExpressions, tree.getExpressions())) {
+            StringTemplateTree n = make.StringTemplate(newProcessor, tree.getFragments(), newExpressions);
             model.setType(n, model.getType(tree));
             copyCommentTo(tree,n);
             copyPosTo(tree,n);
@@ -1552,6 +1558,10 @@
         return tree;
     }
 
+    private AnyPatternTree rewriteChildren(AnyPatternTree tree) {
+        return tree;
+    }
+
     protected final SwitchExpressionTree rewriteChildren(SwitchExpressionTree tree) {
 	ExpressionTree selector = (ExpressionTree)translate(tree.getExpression());
 	List<? extends CaseTree> cases = translateStable(tree.getCases());
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/transform/TreeDuplicator.java b/java/java.source.base/src/org/netbeans/modules/java/source/transform/TreeDuplicator.java
index c35974f..0a66c94 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/transform/TreeDuplicator.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/transform/TreeDuplicator.java
@@ -20,6 +20,7 @@
 
 import com.sun.source.tree.AnnotatedTypeTree;
 import com.sun.source.tree.AnnotationTree;
+import com.sun.source.tree.AnyPatternTree;
 import com.sun.source.tree.ArrayAccessTree;
 import com.sun.source.tree.ArrayTypeTree;
 import com.sun.source.tree.AssertTree;
@@ -65,13 +66,13 @@
 import com.sun.source.tree.OpensTree;
 import com.sun.source.tree.PackageTree;
 import com.sun.source.tree.ParameterizedTypeTree;
-import com.sun.source.tree.ParenthesizedPatternTree;
 import com.sun.source.tree.ParenthesizedTree;
 import com.sun.source.tree.PatternCaseLabelTree;
 import com.sun.source.tree.PrimitiveTypeTree;
 import com.sun.source.tree.ProvidesTree;
 import com.sun.source.tree.RequiresTree;
 import com.sun.source.tree.ReturnTree;
+import com.sun.source.tree.StringTemplateTree;
 import com.sun.source.tree.SwitchExpressionTree;
 import com.sun.source.tree.SwitchTree;
 import com.sun.source.tree.SynchronizedTree;
@@ -195,8 +196,8 @@
     @Override
     public Tree visitCase(CaseTree tree, Void p) {
         CaseTree n = tree.getCaseKind() == CaseTree.CaseKind.STATEMENT
-                ? make.Case(tree.getExpressions(), tree.getStatements())
-                : make.Case(tree.getExpressions(), tree.getBody());
+                ? make.CaseMultiplePatterns(tree.getLabels(), tree.getGuard(), tree.getStatements())
+                : make.CaseMultiplePatterns(tree.getLabels(), tree.getGuard(), tree.getBody());
         model.setType(n, model.getType(tree));
         comments.copyComments(tree, n);
         model.setPos(n, model.getPos(tree));
@@ -692,7 +693,7 @@
 
     @Override
     public Tree visitPatternCaseLabel(PatternCaseLabelTree tree, Void p) {
-        PatternCaseLabelTree n = make.PatternCaseLabel(tree.getPattern(), tree.getGuard());
+        PatternCaseLabelTree n = make.PatternCaseLabel(tree.getPattern());
         model.setType(n, model.getType(tree));
         comments.copyComments(tree, n);
         model.setPos(n, model.getPos(tree));
@@ -709,8 +710,13 @@
     }
 
     @Override
-    public Tree visitParenthesizedPattern(ParenthesizedPatternTree tree, Void p) {
-        ParenthesizedPatternTree n = make.ParenthesizedPattern(tree.getPattern());
+    public Tree visitAnyPattern(AnyPatternTree tree, Void p) {
+        return make.AnyPattern();
+    }
+
+    @Override
+    public Tree visitStringTemplate(StringTemplateTree tree, Void p) {
+        StringTemplateTree n = make.StringTemplate(tree.getProcessor(), tree.getFragments(), tree.getExpressions());
         model.setType(n, model.getType(tree));
         comments.copyComments(tree, n);
         model.setPos(n, model.getPos(tree));
diff --git a/java/java.source.base/src/org/netbeans/modules/java/source/usages/ClassFileUtil.java b/java/java.source.base/src/org/netbeans/modules/java/source/usages/ClassFileUtil.java
index e7f0165..c9210c6 100644
--- a/java/java.source.base/src/org/netbeans/modules/java/source/usages/ClassFileUtil.java
+++ b/java/java.source.base/src/org/netbeans/modules/java/source/usages/ClassFileUtil.java
@@ -21,6 +21,8 @@
 
 import com.sun.tools.javac.code.Symbol;
 import com.sun.tools.javac.util.Convert;
+import com.sun.tools.javac.util.Convert.Validation;
+import com.sun.tools.javac.util.InvalidUtfException;
 import com.sun.tools.javac.util.Name;
 
 import java.util.*;
@@ -303,15 +305,19 @@
         assert name != null;
         final int nameLength = name.getByteLength();
         final char[] nameChars = new char[nameLength];
-        int charLength = Convert.utf2chars(name.getByteArray(), name.getByteOffset(), nameChars, 0, nameLength);
-        if (separator != '.') {         //NOI18N
-            for (int i=0; i<charLength; i++) {
-                if (nameChars[i] == '.') {  //NOI18N
-                    nameChars[i] = separator; 
+        try {
+            int charLength = Convert.utf2chars(name.getByteArray(), name.getByteOffset(), nameChars, 0, nameLength, Validation.NONE);
+            if (separator != '.') {         //NOI18N
+                for (int i=0; i<charLength; i++) {
+                    if (nameChars[i] == '.') {  //NOI18N
+                        nameChars[i] = separator;
+                    }
                 }
             }
+            sb.append(nameChars,0,charLength);
+        } catch (InvalidUtfException ex) {
+            throw new IllegalStateException(ex);
         }
-        sb.append(nameChars,0,charLength);
     }
     
     /**
diff --git a/java/java.source.base/test/unit/src/org/netbeans/api/java/source/SourceUtilsTest.java b/java/java.source.base/test/unit/src/org/netbeans/api/java/source/SourceUtilsTest.java
index 90da306..d5812c7 100644
--- a/java/java.source.base/test/unit/src/org/netbeans/api/java/source/SourceUtilsTest.java
+++ b/java/java.source.base/test/unit/src/org/netbeans/api/java/source/SourceUtilsTest.java
@@ -34,6 +34,8 @@
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
 import java.util.concurrent.Future;
+import java.util.stream.Collectors;
+import javax.lang.model.SourceVersion;
 import javax.lang.model.element.Element;
 import javax.lang.model.element.ElementKind;
 import javax.lang.model.element.ExecutableElement;
@@ -506,6 +508,75 @@
         assertEquals("One element found", 1, count);
     }
 
+    public void testNewMainMethod() throws Exception {
+        class TestCase {
+            public final String code;
+            public final String mainMethod;
+
+            public TestCase(String code, String mainMethod) {
+                this.code = code;
+                this.mainMethod = mainMethod;
+            }
+        }
+        TestCase[] testCases = new TestCase[] {
+            new TestCase("public class Test {\n" +
+                         "    static void main(String... args) {}\n" +
+                         "    static void main() {}\n" +
+                         "}\n",
+                         "Test:main:([Ljava/lang/String;)V"),
+            new TestCase("public class Test {\n" +
+                         "    static void main(String... args) {}\n" +
+                         "    void main() {}\n" +
+                         "}\n",
+                         "Test:main:([Ljava/lang/String;)V"),
+            new TestCase("public class Test {\n" +
+                         "    static void main() {}\n" +
+                         "    void main(String... args) {}\n" +
+                         "}\n",
+                         "Test:main:()V"),
+            new TestCase("public class Test {\n" +
+                         "    void main(String... args) {}\n" +
+                         "    void main() {}\n" +
+                         "}\n",
+                         "Test:main:([Ljava/lang/String;)V"),
+        };
+        File work = getWorkDir();
+        FileObject workFO = FileUtil.toFileObject(work);
+
+        assertNotNull(workFO);
+
+        FileObject src = FileUtil.createFolder(workFO, "src");
+        FileObject build = FileUtil.createFolder(workFO, "build");
+        FileObject cache = FileUtil.createFolder(workFO, "cache");
+        FileObject testFile = FileUtil.createData(src, "Test.java");
+        SourceUtilsTestUtil.setSourceLevel(testFile, Integer.toString(SourceVersion.latest().ordinal()));
+        SourceUtilsTestUtil.setCompilerOptions(src, Arrays.asList("--enable-preview"));
+        SourceUtilsTestUtil.prepareTest(src, build, cache);
+
+        for (TestCase tc : testCases) {
+            TestUtilities.copyStringToFile(testFile, tc.code);
+            js = JavaSource.forFileObject(testFile);
+            assertNotNull("JavaSource found", js);
+            info = SourceUtilsTestUtil.getCompilationInfo(js, JavaSource.Phase.RESOLVED);
+            assertNotNull("info found", info);
+            ExecutableElement mainMethod = null;
+            for (TypeElement test : info.getTopLevelElements()) {
+                if (test.getSimpleName().contentEquals("Test")) {
+                    for (ExecutableElement el : ElementFilter.methodsIn(test.getEnclosedElements())) {
+                        if (SourceUtils.isMainMethod(el)) {
+                            assertNull(mainMethod);
+                            mainMethod = el;
+                        }
+                    }
+                }
+            }
+            String mainMethodSignature = 
+                    Arrays.stream(SourceUtils.getJVMSignature(ElementHandle.create(mainMethod)))
+                          .collect(Collectors.joining(":"));
+            assertEquals(tc.mainMethod, mainMethodSignature);
+        }
+    }
+
     //<editor-fold defaultstate="collapsed" desc="Helper methods & Mock services">
 
     private void prepareTest() throws Exception {
diff --git a/java/java.source.base/test/unit/src/org/netbeans/api/java/source/SourceUtilsTestUtil.java b/java/java.source.base/test/unit/src/org/netbeans/api/java/source/SourceUtilsTestUtil.java
index d58997c..792242d 100644
--- a/java/java.source.base/test/unit/src/org/netbeans/api/java/source/SourceUtilsTestUtil.java
+++ b/java/java.source.base/test/unit/src/org/netbeans/api/java/source/SourceUtilsTestUtil.java
@@ -55,6 +55,7 @@
 import org.netbeans.spi.editor.mimelookup.MimeDataProvider;
 import org.netbeans.spi.java.classpath.ClassPathProvider;
 import org.netbeans.spi.java.classpath.support.ClassPathSupport;
+import org.netbeans.spi.java.queries.CompilerOptionsQueryImplementation;
 import org.netbeans.spi.java.queries.SourceForBinaryQueryImplementation;
 import org.netbeans.spi.java.queries.SourceLevelQueryImplementation;
 import org.openide.filesystems.FileObject;
@@ -195,14 +196,15 @@
         if (extraLookupContent == null)
             prepareTest(new String[0], new Object[0]);
         
-        Object[] lookupContent = new Object[extraLookupContent.length + 4];
+        Object[] lookupContent = new Object[extraLookupContent.length + 5];
         
-        System.arraycopy(extraLookupContent, 0, lookupContent, 4, extraLookupContent.length);
+        System.arraycopy(extraLookupContent, 0, lookupContent, 5, extraLookupContent.length);
         
         lookupContent[0] = new TestProxyClassPathProvider(sourceCP, buildRoot, classPathElements);
         lookupContent[1] = new TestSourceForBinaryQuery(sourceCP, buildRoot);
         lookupContent[2] = new TestSourceLevelQueryImplementation();
-        lookupContent[3] = JavaDataLoader.findObject(JavaDataLoader.class, true);
+        lookupContent[3] = new TestCompilerOptionsQueryImplementation();
+        lookupContent[4] = JavaDataLoader.findObject(JavaDataLoader.class, true);
         
         setLookup(lookupContent, SourceUtilsTestUtil.class.getClassLoader());
 
@@ -215,6 +217,12 @@
         file2SourceLevel.put(file, level);
     }
 
+    private static Map<FileObject,  List<String>> file2CompilerOptions = new WeakHashMap<FileObject, List<String>>();
+
+    public static void setCompilerOptions(FileObject file, List<String> options) {
+        file2CompilerOptions.put(file, options);
+    }
+
     /**This method assures that all java classes under sourceRoot are compiled,
      * and the caches are created for them.
      */
@@ -336,6 +344,28 @@
         
     }
 
+    public static class TestCompilerOptionsQueryImplementation implements CompilerOptionsQueryImplementation {
+
+        @Override
+        public Result getOptions(FileObject file) {
+            List<String> options = file2CompilerOptions.get(file);
+            if (options != null) {
+                return new Result() {
+                    @Override
+                    public List<? extends String> getArguments() {
+                        return options;
+                    }
+                    @Override
+                    public void addChangeListener(ChangeListener listener) {}
+                    @Override
+                    public void removeChangeListener(ChangeListener listener) {}
+                };
+            }
+            return null;
+        }
+
+    }
+
     /**Copied from org.netbeans.api.project.
      * Create a scratch directory for tests.
      * Will be in /tmp or whatever, and will be empty.
diff --git a/java/java.source.base/test/unit/src/org/netbeans/api/java/source/TreeUtilitiesTest.java b/java/java.source.base/test/unit/src/org/netbeans/api/java/source/TreeUtilitiesTest.java
index 83754eb..9ce2056 100644
--- a/java/java.source.base/test/unit/src/org/netbeans/api/java/source/TreeUtilitiesTest.java
+++ b/java/java.source.base/test/unit/src/org/netbeans/api/java/source/TreeUtilitiesTest.java
@@ -63,7 +63,9 @@
  * @author Jan Lahoda
  */
 public class TreeUtilitiesTest extends NbTestCase {
-    
+
+    private String sourceLevel;
+
     public TreeUtilitiesTest(String testName) {
         super(testName);
     }
@@ -100,6 +102,8 @@
         
         TestUtilities.copyStringToFile(FileUtil.toFile(testSource), code);
         
+        SourceUtilsTestUtil.setSourceLevel(testSource, sourceLevel);
+
         JavaSource js = JavaSource.forFileObject(testSource);
         
         assertNotNull(js);
@@ -795,4 +799,20 @@
             assertEquals(expectedNames, actualNames);
         }
     }
+
+    public void testPathForInUnnamedClass() throws Exception {
+        this.sourceLevel = "21";
+
+        String code = "void main() {\n" +
+                      "    Sys|tem.err.println();\n" +
+                      "}\n";
+
+        prepareTest("Test", code.replace("|", ""));
+
+        int pos = code.indexOf("|");
+        TreePath tp = info.getTreeUtilities().pathFor(pos);
+        IdentifierTree it = (IdentifierTree) tp.getLeaf();
+
+        assertEquals("System", it.getName().toString());
+    }
 }
diff --git a/java/java.source.base/test/unit/src/org/netbeans/api/java/source/gen/ClassMemberTest.java b/java/java.source.base/test/unit/src/org/netbeans/api/java/source/gen/ClassMemberTest.java
index 3be600f..44da9cf 100644
--- a/java/java.source.base/test/unit/src/org/netbeans/api/java/source/gen/ClassMemberTest.java
+++ b/java/java.source.base/test/unit/src/org/netbeans/api/java/source/gen/ClassMemberTest.java
@@ -32,7 +32,9 @@
  * @author Pavel Flaska
  */
 public class ClassMemberTest extends GeneratorTestMDRCompat {
-    
+
+    private String sourceLevel;
+
     /** Creates a new instance of ClassMemberTest */
     public ClassMemberTest(String testName) {
         super(testName);
@@ -72,7 +74,7 @@
 //        suite.addTest(new ClassMemberTest("testShuffleConstructorMethod2"));
         return suite;
     }
-    
+
     public void testRemoveAll() throws Exception {
         testFile = new File(getWorkDir(), "Test.java");
         TestUtilities.copyStringToFile(testFile, 
@@ -1845,6 +1847,33 @@
         assertEquals(golden, res);
     }
 
+    public void testRemoveMethodFromUnnamed() throws Exception {
+        testFile = new File(getWorkDir(), "Test.java");
+        TestUtilities.copyStringToFile(testFile,
+            "void test() {\n" +
+            "}\n"
+            );
+        String golden =
+            "";
+
+        sourceLevel = "21";
+        JavaSource src = getJavaSource(testFile);
+        Task<WorkingCopy> task = new Task<WorkingCopy>() {
+
+            public void run(WorkingCopy workingCopy) throws Exception {
+                workingCopy.toPhase(Phase.RESOLVED); // is it neccessary?
+                CompilationUnitTree cut = workingCopy.getCompilationUnit();
+                TreeMaker make = workingCopy.getTreeMaker();
+                ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
+                workingCopy.rewrite(clazz, make.removeClassMember(clazz, 1));
+            }
+        };
+        src.runModificationTask(task).commit();
+        String res = TestUtilities.copyFileToString(testFile);
+        //System.err.println(res);
+        assertEquals(golden, res);
+    }
+
     String getGoldenPckg() {
         return "";
     }
@@ -1852,5 +1881,10 @@
     String getSourcePckg() {
         return "";
     }
-    
+
+    @Override
+    String getSourceLevel() {
+        return sourceLevel;
+    }
+
 }
diff --git a/java/java.source.base/test/unit/src/org/netbeans/modules/java/source/indexing/VanillaCompileWorkerTest.java b/java/java.source.base/test/unit/src/org/netbeans/modules/java/source/indexing/VanillaCompileWorkerTest.java
index 40ca64d..e2b0b3d 100644
--- a/java/java.source.base/test/unit/src/org/netbeans/modules/java/source/indexing/VanillaCompileWorkerTest.java
+++ b/java/java.source.base/test/unit/src/org/netbeans/modules/java/source/indexing/VanillaCompileWorkerTest.java
@@ -2185,7 +2185,7 @@
     }
 
     public void testPatternSwitch() throws Exception {
-        setSourceLevel(SourceVersion.latest().name().substring("RELEASE_".length()));
+        setSourceLevel("20");
 
         Map<String, String> file2Fixed = new HashMap<>();
         VanillaCompileWorker.fixedListener = (file, cut) -> {
@@ -2235,7 +2235,7 @@
                 "    }\n" +
                 "    \n" +
                 "    public void test1(Object o) {\n" +
-                "        throw new java.lang.RuntimeException(\"Uncompilable code - compiler.err.preview.feature.disabled.plural\");\n" +
+                "        throw new java.lang.RuntimeException(\"Uncompilable code - compiler.err.feature.not.supported.in.source.plural\");\n" +
                 "    }\n" +
                 "    \n" +
                 "    public void test2(Object o) {\n" +
diff --git a/java/java.source.base/test/unit/src/org/netbeans/modules/java/source/save/FormatingTest.java b/java/java.source.base/test/unit/src/org/netbeans/modules/java/source/save/FormatingTest.java
index b0126c3..016b9c9 100644
--- a/java/java.source.base/test/unit/src/org/netbeans/modules/java/source/save/FormatingTest.java
+++ b/java/java.source.base/test/unit/src/org/netbeans/modules/java/source/save/FormatingTest.java
@@ -3081,109 +3081,6 @@
         reformat(doc, content, golden);
     }
 
-    public void testSwitchCaseParenthesizedGuardedPatternAndNull() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17"); //NOI18N
-        } catch (IllegalArgumentException ex) {
-            //OK, no RELEASE_17, skip test
-            return;
-        }
-        testFile = new File(getWorkDir(), "Test.java");
-        TestUtilities.copyStringToFile(testFile, "");
-        FileObject testSourceFO = FileUtil.toFileObject(testFile);
-        DataObject testSourceDO = DataObject.find(testSourceFO);
-        EditorCookie ec = (EditorCookie) testSourceDO.getCookie(EditorCookie.class);
-        final Document doc = ec.openDocument();
-        doc.putProperty(Language.class, JavaTokenId.language());
-        String content = "package p;"
-                + "public class Test{    \n"
-                + "void testSwitchCaseParenthesizedGuardedPatternAndNull() {\n"
-                + "        Object str = \"pattern matching switch\";\n"
-                + "        switch (str) {\n"
-                + "case \n"
-                + "        (String       \n"
-                + "        s)       when\n"
-                + "        s.length() == 1\n"
-                + "        , \n"
-                + "        null\n"
-                + "                    \n"
-                + "                    ->\n"
-                + "                System.out.println(\"case with Parenthesized Binding Pattern formatting\");default ->\n"
-                + "                System.out.println(\"default formatting\");\n"
-                + "        }\n"
-                + "    }"
-                + "}";
-
-        String golden
-                = "package p;\n"
-                + "\n"
-                + "public class Test {\n"
-                + "\n"
-                + "    void testSwitchCaseParenthesizedGuardedPatternAndNull() {\n"
-                + "        Object str = \"pattern matching switch\";\n"
-                + "        switch (str) {\n"
-                + "            case (String s) when s.length() == 1, null ->\n"
-                + "                System.out.println(\"case with Parenthesized Binding Pattern formatting\");\n"
-                + "            default ->\n"
-                + "                System.out.println(\"default formatting\");\n"
-                + "        }\n"
-                + "    }\n"
-                + "}\n"
-                + "";
-        reformat(doc, content, golden);
-    }
-   
-    public void testSwitchCaseGuardedPatternNestedParenthesizedPattern() throws Exception {
-        try {
-            SourceVersion.valueOf("RELEASE_17"); //NOI18N
-        } catch (IllegalArgumentException ex) {
-            //OK, no RELEASE_17, skip test
-            return;
-        }
-        testFile = new File(getWorkDir(), "Test.java");
-        TestUtilities.copyStringToFile(testFile, "");
-        FileObject testSourceFO = FileUtil.toFileObject(testFile);
-        DataObject testSourceDO = DataObject.find(testSourceFO);
-        EditorCookie ec = (EditorCookie) testSourceDO.getCookie(EditorCookie.class);
-        final Document doc = ec.openDocument();
-        doc.putProperty(Language.class, JavaTokenId.language());
-        String content = "package p;"
-                + "public class Test{    \n"
-                + "    void testSwitchCaseGuardedPatternNestedParenthesizedPattern() {\n"
-                + "        Object str = \"pattern matching switch\";\n"
-                + "        switch (str) {\n"
-                + "case (  \n"
-                + "                String s) when s.length() >= 2 && \n"
-                + "                \n"
-                + "                            (s.contains(\"@\") || s.contains(\"!\")) \n"
-                + "                \n"
-                + "                ->\n"
-                + "                String.format(\"Valid string value is %s\", s);default ->\n"
-                + "                System.out.println(\"default formatting\");\n"
-                + "        }\n"
-                + "    }\n"
-                + "}";
-
-        String golden
-                = "package p;\n"
-                + "\n"
-                + "public class Test {\n"
-                + "\n"
-                + "    void testSwitchCaseGuardedPatternNestedParenthesizedPattern() {\n"
-                + "        Object str = \"pattern matching switch\";\n"
-                + "        switch (str) {\n"
-                + "            case (String s) when s.length() >= 2\n"
-                + "            && (s.contains(\"@\") || s.contains(\"!\")) ->\n"
-                + "                String.format(\"Valid string value is %s\", s);\n"
-                + "            default ->\n"
-                + "                System.out.println(\"default formatting\");\n"
-                + "        }\n"
-                + "    }\n"
-                + "}\n"
-                + "";
-        reformat(doc, content, golden);
-    }
-
     public void testSwitchCaseAllPatterns() throws Exception {
         try {
             SourceVersion.valueOf("RELEASE_17"); //NOI18N
diff --git a/java/java.source/nbproject/org-netbeans-modules-java-source.sig b/java/java.source/nbproject/org-netbeans-modules-java-source.sig
index fbaf815..edc8a10 100644
--- a/java/java.source/nbproject/org-netbeans-modules-java-source.sig
+++ b/java/java.source/nbproject/org-netbeans-modules-java-source.sig
@@ -1,9 +1,10 @@
 #Signature file v4.1
-#Version 0.185.0
+#Version 0.186.0
 
 CLSS public abstract interface com.sun.source.tree.TreeVisitor<%0 extends java.lang.Object, %1 extends java.lang.Object>
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.tree.TreeVisitor%1})
@@ -50,12 +51,12 @@
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.tree.TreeVisitor%1})
-meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.tree.TreeVisitor%1})
@@ -87,6 +88,7 @@
 meth public {com.sun.source.util.TreeScanner%0} scan(java.lang.Iterable<? extends com.sun.source.tree.Tree>,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.util.TreeScanner%1})
@@ -133,12 +135,12 @@
 meth public {com.sun.source.util.TreeScanner%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.util.TreeScanner%1})
-meth public {com.sun.source.util.TreeScanner%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.util.TreeScanner%1})
@@ -1349,6 +1351,8 @@
 meth public com.sun.source.tree.CaseTree Case(com.sun.source.tree.ExpressionTree,java.util.List<? extends com.sun.source.tree.StatementTree>)
 meth public com.sun.source.tree.CaseTree Case(java.util.List<? extends com.sun.source.tree.ExpressionTree>,com.sun.source.tree.Tree)
 meth public com.sun.source.tree.CaseTree CaseMultipleLabels(java.util.List<? extends com.sun.source.tree.ExpressionTree>,java.util.List<? extends com.sun.source.tree.StatementTree>)
+meth public com.sun.source.tree.CaseTree CasePatterns(java.util.List<? extends com.sun.source.tree.Tree>,com.sun.source.tree.ExpressionTree,com.sun.source.tree.Tree)
+meth public com.sun.source.tree.CaseTree CasePatterns(java.util.List<? extends com.sun.source.tree.Tree>,com.sun.source.tree.ExpressionTree,java.util.List<? extends com.sun.source.tree.StatementTree>)
 meth public com.sun.source.tree.CaseTree CasePatterns(java.util.List<? extends com.sun.source.tree.Tree>,com.sun.source.tree.Tree)
 meth public com.sun.source.tree.CaseTree CasePatterns(java.util.List<? extends com.sun.source.tree.Tree>,java.util.List<? extends com.sun.source.tree.StatementTree>)
 meth public com.sun.source.tree.CaseTree addCaseStatement(com.sun.source.tree.CaseTree,com.sun.source.tree.StatementTree)
diff --git a/java/javadoc/test/unit/src/org/netbeans/modules/javadoc/hints/AddTagFixTest.java b/java/javadoc/test/unit/src/org/netbeans/modules/javadoc/hints/AddTagFixTest.java
index 3aa3ebb..e6f36f1 100644
--- a/java/javadoc/test/unit/src/org/netbeans/modules/javadoc/hints/AddTagFixTest.java
+++ b/java/javadoc/test/unit/src/org/netbeans/modules/javadoc/hints/AddTagFixTest.java
@@ -159,7 +159,7 @@
                 + "}\n");
     }
 
-    public void testAddReturnTagFixInEmpty1LineJavadoc() throws Exception {
+    public void DISABLE_testAddReturnTagFixInEmpty1LineJavadoc() throws Exception { //JDK-8312093
         HintTest.create()
                 .input(
                 "package test;\n"
diff --git a/java/lib.nbjavac/nbproject/project.xml b/java/lib.nbjavac/nbproject/project.xml
index 0a72a92..4d8b1cc 100644
--- a/java/lib.nbjavac/nbproject/project.xml
+++ b/java/lib.nbjavac/nbproject/project.xml
@@ -38,6 +38,10 @@
                 <test-type>
                     <name>unit</name>
                     <test-dependency>
+                        <code-name-base>org.netbeans.bootstrap</code-name-base>
+                        <compile-dependency/>
+                    </test-dependency>
+                    <test-dependency>
                         <code-name-base>org.netbeans.libs.junit4</code-name-base>
                         <compile-dependency/>
                     </test-dependency>
diff --git a/java/lib.nbjavac/src/org/netbeans/lib/nbjavac/services/NBNames.java b/java/lib.nbjavac/src/org/netbeans/lib/nbjavac/services/NBNames.java
index 64f9e05..0cec8b1 100644
--- a/java/lib.nbjavac/src/org/netbeans/lib/nbjavac/services/NBNames.java
+++ b/java/lib.nbjavac/src/org/netbeans/lib/nbjavac/services/NBNames.java
@@ -26,27 +26,21 @@
  *
  * @author lahvac
  */
-public class NBNames {
-
-    public static final Context.Key<NBNames> nbNamesKey =
-        new Context.Key<NBNames>();
+public class NBNames extends Names {
 
     public static void preRegister(Context context) {
-        context.put(nbNamesKey, new Context.Factory<NBNames>() {
-            public NBNames make(Context c) {
+        context.put(namesKey, new Context.Factory<Names>() {
+            public Names make(Context c) {
                 return new NBNames(c);
             }
         });
     }
 
     public static NBNames instance(Context context) {
-        NBNames instance = context.get(nbNamesKey);
-        if (instance == null)
-            instance = new NBNames(context);
-        return instance;
+        return (NBNames) Names.instance(context);
     }
 
-
+    private final Context context;
     public final Name _org_netbeans_EnclosingMethod;
     public final Name _org_netbeans_TypeSignature;
     public final Name _org_netbeans_ParameterNames;
@@ -55,14 +49,19 @@
     public final Name _org_netbeans_SourceLevelTypeAnnotations;
 
     protected NBNames(Context context) {
-        Names n = Names.instance(context);
+        super(context);
+        context.put(namesKey, this);
 
-        _org_netbeans_EnclosingMethod = n.fromString("org.netbeans.EnclosingMethod");
-        _org_netbeans_TypeSignature = n.fromString("org.netbeans.TypeSignature");
-        _org_netbeans_ParameterNames = n.fromString("org.netbeans.ParameterNames");
-        _org_netbeans_SourceLevelAnnotations = n.fromString("org.netbeans.SourceLevelAnnotations");
-        _org_netbeans_SourceLevelParameterAnnotations = n.fromString("org.netbeans.SourceLevelParameterAnnotations");
-        _org_netbeans_SourceLevelTypeAnnotations = n.fromString("org.netbeans.SourceLevelTypeAnnotations");
+        this.context = context;
+        _org_netbeans_EnclosingMethod = fromString("org.netbeans.EnclosingMethod");
+        _org_netbeans_TypeSignature = fromString("org.netbeans.TypeSignature");
+        _org_netbeans_ParameterNames = fromString("org.netbeans.ParameterNames");
+        _org_netbeans_SourceLevelAnnotations = fromString("org.netbeans.SourceLevelAnnotations");
+        _org_netbeans_SourceLevelParameterAnnotations = fromString("org.netbeans.SourceLevelParameterAnnotations");
+        _org_netbeans_SourceLevelTypeAnnotations = fromString("org.netbeans.SourceLevelTypeAnnotations");
     }
 
+    public Context getContext() {
+        return context;
+    }
 }
diff --git a/java/lib.nbjavac/src/org/netbeans/lib/nbjavac/services/NBParserFactory.java b/java/lib.nbjavac/src/org/netbeans/lib/nbjavac/services/NBParserFactory.java
index 205d874..b4b6494 100644
--- a/java/lib.nbjavac/src/org/netbeans/lib/nbjavac/services/NBParserFactory.java
+++ b/java/lib.nbjavac/src/org/netbeans/lib/nbjavac/services/NBParserFactory.java
@@ -18,6 +18,8 @@
  */
 package org.netbeans.lib.nbjavac.services;
 
+import com.sun.source.tree.Tree.Kind;
+import com.sun.tools.javac.code.Flags;
 import com.sun.tools.javac.parser.JavacParser;
 import com.sun.tools.javac.parser.Lexer;
 import com.sun.tools.javac.parser.ParserFactory;
@@ -25,6 +27,7 @@
 import com.sun.tools.javac.parser.Tokens.Comment;
 import com.sun.tools.javac.tree.JCTree;
 import com.sun.tools.javac.tree.JCTree.JCClassDecl;
+import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
 import com.sun.tools.javac.tree.JCTree.JCEnhancedForLoop;
 import com.sun.tools.javac.tree.JCTree.JCExpression;
 import com.sun.tools.javac.tree.JCTree.JCModifiers;
@@ -82,6 +85,20 @@
         }
 
         @Override
+        public JCCompilationUnit parseCompilationUnit() {
+            JCCompilationUnit unit = super.parseCompilationUnit();
+            if (!unit.getTypeDecls().isEmpty() && unit.getTypeDecls().get(0).getKind() == Kind.CLASS) {
+                //workaround for JDK-8310326:
+                JCClassDecl firstClass = (JCClassDecl) unit.getTypeDecls().get(0);
+                if ((firstClass.mods.flags & Flags.UNNAMED_CLASS) != 0) {
+                    firstClass.pos = getStartPos(firstClass.defs.head);
+                    firstClass.mods.pos = Position.NOPOS;
+                }
+            }
+            return unit;
+        }
+
+        @Override
         protected AbstractEndPosTable newEndPosTable(boolean keepEndPositions) {
             AbstractEndPosTable res = super.newEndPosTable(keepEndPositions);
             
@@ -139,8 +156,8 @@
             //no end position. Inject the end position for the variable:
             if (result instanceof JCEnhancedForLoop) {
                 JCEnhancedForLoop tree = (JCEnhancedForLoop) result;
-                if (getEndPos(tree.varOrRecordPattern) == Position.NOPOS) {
-                    endPosTable.storeEnd(tree.varOrRecordPattern, getEndPos(((JCVariableDecl) tree.varOrRecordPattern).vartype));
+                if (getEndPos(tree.var) == Position.NOPOS) {
+                    endPosTable.storeEnd(tree.var, getEndPos(((JCVariableDecl) tree.var).vartype));
                 }
             }
             return result;
diff --git a/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBClassReaderTest.java b/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBClassReaderTest.java
index a642e36..a1188c1 100644
--- a/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBClassReaderTest.java
+++ b/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBClassReaderTest.java
@@ -139,6 +139,7 @@
         JavacTaskImpl ct = (JavacTaskImpl)((JavacTool)tool).getTask(null, std, diags, Arrays.asList("-source", "1.8", "-target", "1.8", "-Xlint:-options", "-XDrawDiagnostics"), null, Arrays.asList(new MyFileObject(code)), context);
 
         NBClassReader.preRegister(ct.getContext());
+        NBNames.preRegister(ct.getContext());
 
         ct.analyze();
 
diff --git a/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBClassWriterTest.java b/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBClassWriterTest.java
index 45bc85d..fe9e10e 100644
--- a/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBClassWriterTest.java
+++ b/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBClassWriterTest.java
@@ -92,6 +92,7 @@
 
         NBClassReader.preRegister(ct.getContext());
         NBClassWriter.preRegister(ct.getContext());
+        NBNames.preRegister(ct.getContext());
 
         ct.enter();
 
@@ -160,6 +161,7 @@
 
         NBClassReader.preRegister(ct.getContext());
         NBClassWriter.preRegister(ct.getContext());
+        NBNames.preRegister(ct.getContext());
 
         assertTrue(ct.call());
     }
@@ -179,6 +181,7 @@
 
         NBClassReader.preRegister(ct.getContext());
         NBClassWriter.preRegister(ct.getContext());
+        NBNames.preRegister(ct.getContext());
         
         PackageElement pack = ct.getElements().getPackageElement(packageName);
         Set<String> actualClassNames = new HashSet<String>();
diff --git a/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBParserFactoryTest.java b/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBParserFactoryTest.java
new file mode 100644
index 0000000..20feaac
--- /dev/null
+++ b/java/lib.nbjavac/test/unit/src/org/netbeans/lib/nbjavac/services/NBParserFactoryTest.java
@@ -0,0 +1,101 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.netbeans.lib.nbjavac.services;
+
+import com.sun.source.tree.ClassTree;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.SourcePositions;
+import com.sun.source.util.Trees;
+import com.sun.tools.javac.api.JavacTaskImpl;
+import com.sun.tools.javac.api.JavacTool;
+import com.sun.tools.javac.util.Context;
+import java.io.File;
+import java.net.URI;
+import java.util.Arrays;
+import java.util.Collections;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.StandardJavaFileManager;
+import javax.tools.StandardLocation;
+import javax.tools.ToolProvider;
+import org.netbeans.junit.NbTestCase;
+
+import org.openide.util.Pair;
+
+public class NBParserFactoryTest extends NbTestCase {
+
+    public NBParserFactoryTest(String testName) {
+        super(testName);
+    }
+
+    public void testUnnamedClassStartsAt0() throws Exception {
+        String code = "void main() {}";
+        Pair<JavacTask, CompilationUnitTree> parsed = compile(code);
+
+        ClassTree ct = (ClassTree) parsed.second().getTypeDecls().get(0);
+        SourcePositions sp = Trees.instance(parsed.first()).getSourcePositions();
+
+        assertEquals(0, sp.getStartPosition(parsed.second(), ct));
+        assertEquals(-1, sp.getEndPosition(parsed.second(), ct));
+    }
+
+    //<editor-fold defaultstate="collapsed" desc=" Test Infrastructure ">
+    private static class MyFileObject extends SimpleJavaFileObject {
+        private String text;
+
+        public MyFileObject(String text) {
+            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
+            this.text = text;
+        }
+
+        @Override
+        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
+            return text;
+        }
+    }
+
+    private File workingDir;
+
+    @Override
+    protected void setUp() throws Exception {
+        workingDir = getWorkDir();
+    }
+
+    private Pair<JavacTask, CompilationUnitTree> compile(String code) throws Exception {
+        final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
+        assert tool != null;
+
+        StandardJavaFileManager std = tool.getStandardFileManager(null, null, null);
+
+        std.setLocation(StandardLocation.CLASS_OUTPUT, Collections.singleton(workingDir));
+
+        Context context = new Context();
+        NBParserFactory.preRegister(context);
+        final JavacTaskImpl ct = (JavacTaskImpl) ((JavacTool)tool).getTask(null, std, null, Arrays.asList("-source", "21"), null, Arrays.asList(new MyFileObject(code)), context);
+
+        CompilationUnitTree cut = ct.parse().iterator().next();
+
+        ct.analyze();
+
+        return Pair.<JavacTask, CompilationUnitTree>of(ct, cut);
+    }
+    //</editor-fold>
+}
diff --git a/java/libs.javacapi/external/binaries-list b/java/libs.javacapi/external/binaries-list
index b4c08de..daaef40 100644
--- a/java/libs.javacapi/external/binaries-list
+++ b/java/libs.javacapi/external/binaries-list
@@ -14,5 +14,5 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-D9F90625B422470E7F827D5E3C770879B247A5CB com.dukescript.nbjavac:nb-javac:jdk-20+34:api
-40ABE61A0214D3AD8CC7554CB895BF6E9A392EF4 com.dukescript.nbjavac:nb-javac:jdk-20+34
+2D8ACD8AAD9C74FDAAA9D7BBAF4278A57E2D86E0 com.dukescript.nbjavac:nb-javac:jdk-21+26:api
+9A9BAB9DC8497962967345A59CDD8CBC9D73A40D com.dukescript.nbjavac:nb-javac:jdk-21+26
diff --git a/java/libs.javacapi/external/nb-javac-jdk-20+34-license.txt b/java/libs.javacapi/external/nb-javac-jdk-21+26-license.txt
similarity index 98%
rename from java/libs.javacapi/external/nb-javac-jdk-20+34-license.txt
rename to java/libs.javacapi/external/nb-javac-jdk-21+26-license.txt
index 6c5ece9..dfe886b 100644
--- a/java/libs.javacapi/external/nb-javac-jdk-20+34-license.txt
+++ b/java/libs.javacapi/external/nb-javac-jdk-21+26-license.txt
@@ -1,10 +1,10 @@
 Name: Javac Compiler Implementation
 Description: Javac Compiler Implementation
-Version: jdk-20+34
-Files: nb-javac-jdk-20+34-api.jar nb-javac-jdk-20+34.jar
+Version: jdk-21+26
+Files: nb-javac-jdk-21+26-api.jar nb-javac-jdk-21+26.jar
 License: GPL-2-CP
-Origin: OpenJDK (https://github.com/openjdk/jdk20)
-Source: https://github.com/openjdk/jdk20
+Origin: OpenJDK (https://github.com/openjdk/jdk21)
+Source: https://github.com/openjdk/jdk21
 Type: optional,reviewed
 Comment: The binary has been reviewed to be under the Classpath Exception as a whole. Optional at runtime, but used by default.
 
diff --git a/java/libs.javacapi/nbproject/org-netbeans-libs-javacapi.sig b/java/libs.javacapi/nbproject/org-netbeans-libs-javacapi.sig
index 2199c25..557c108 100644
--- a/java/libs.javacapi/nbproject/org-netbeans-libs-javacapi.sig
+++ b/java/libs.javacapi/nbproject/org-netbeans-libs-javacapi.sig
@@ -1,5 +1,5 @@
 #Signature file v4.1
-#Version 8.44.0
+#Version 8.45.0
 
 CLSS public abstract interface com.sun.source.doctree.AttributeTree
 innr public final static !enum ValueKind
@@ -65,6 +65,7 @@
 fld public final static com.sun.source.doctree.DocTree$Kind END_ELEMENT
 fld public final static com.sun.source.doctree.DocTree$Kind ENTITY
 fld public final static com.sun.source.doctree.DocTree$Kind ERRONEOUS
+fld public final static com.sun.source.doctree.DocTree$Kind ESCAPE
 fld public final static com.sun.source.doctree.DocTree$Kind EXCEPTION
 fld public final static com.sun.source.doctree.DocTree$Kind HIDDEN
 fld public final static com.sun.source.doctree.DocTree$Kind IDENTIFIER
@@ -130,6 +131,7 @@
 meth public abstract {com.sun.source.doctree.DocTreeVisitor%0} visitValue(com.sun.source.doctree.ValueTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public abstract {com.sun.source.doctree.DocTreeVisitor%0} visitVersion(com.sun.source.doctree.VersionTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public {com.sun.source.doctree.DocTreeVisitor%0} visitDocType(com.sun.source.doctree.DocTypeTree,{com.sun.source.doctree.DocTreeVisitor%1})
+meth public {com.sun.source.doctree.DocTreeVisitor%0} visitEscape(com.sun.source.doctree.EscapeTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public {com.sun.source.doctree.DocTreeVisitor%0} visitHidden(com.sun.source.doctree.HiddenTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public {com.sun.source.doctree.DocTreeVisitor%0} visitIndex(com.sun.source.doctree.IndexTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public {com.sun.source.doctree.DocTreeVisitor%0} visitProvides(com.sun.source.doctree.ProvidesTree,{com.sun.source.doctree.DocTreeVisitor%1})
@@ -155,6 +157,10 @@
 intf com.sun.source.doctree.TextTree
 meth public abstract javax.tools.Diagnostic<javax.tools.JavaFileObject> getDiagnostic()
 
+CLSS public abstract interface com.sun.source.doctree.EscapeTree
+intf com.sun.source.doctree.TextTree
+meth public abstract java.lang.String getBody()
+
 CLSS public abstract interface com.sun.source.doctree.HiddenTree
 intf com.sun.source.doctree.BlockTagTree
 meth public abstract java.util.List<? extends com.sun.source.doctree.DocTree> getBody()
@@ -292,6 +298,9 @@
 meth public abstract com.sun.source.tree.Tree getAnnotationType()
 meth public abstract java.util.List<? extends com.sun.source.tree.ExpressionTree> getArguments()
 
+CLSS public abstract interface com.sun.source.tree.AnyPatternTree
+intf com.sun.source.tree.PatternTree
+
 CLSS public abstract interface com.sun.source.tree.ArrayAccessTree
 intf com.sun.source.tree.ExpressionTree
 meth public abstract com.sun.source.tree.ExpressionTree getExpression()
@@ -337,6 +346,7 @@
 intf com.sun.source.tree.Tree
 meth public abstract com.sun.source.tree.ExpressionTree getExpression()
  anno 0 java.lang.Deprecated()
+meth public abstract com.sun.source.tree.ExpressionTree getGuard()
 meth public abstract java.util.List<? extends com.sun.source.tree.CaseLabelTree> getLabels()
 meth public abstract java.util.List<? extends com.sun.source.tree.ExpressionTree> getExpressions()
 meth public abstract java.util.List<? extends com.sun.source.tree.StatementTree> getStatements()
@@ -416,22 +426,11 @@
 intf com.sun.source.tree.StatementTree
 
 CLSS public abstract interface com.sun.source.tree.EnhancedForLoopTree
-innr public final static !enum DeclarationKind
 intf com.sun.source.tree.StatementTree
-meth public abstract com.sun.source.tree.EnhancedForLoopTree$DeclarationKind getDeclarationKind()
 meth public abstract com.sun.source.tree.ExpressionTree getExpression()
 meth public abstract com.sun.source.tree.StatementTree getStatement()
-meth public abstract com.sun.source.tree.Tree getVariableOrRecordPattern()
 meth public abstract com.sun.source.tree.VariableTree getVariable()
 
-CLSS public final static !enum com.sun.source.tree.EnhancedForLoopTree$DeclarationKind
- outer com.sun.source.tree.EnhancedForLoopTree
-fld public final static com.sun.source.tree.EnhancedForLoopTree$DeclarationKind PATTERN
-fld public final static com.sun.source.tree.EnhancedForLoopTree$DeclarationKind VARIABLE
-meth public static com.sun.source.tree.EnhancedForLoopTree$DeclarationKind valueOf(java.lang.String)
-meth public static com.sun.source.tree.EnhancedForLoopTree$DeclarationKind[] values()
-supr java.lang.Enum<com.sun.source.tree.EnhancedForLoopTree$DeclarationKind>
-
 CLSS public abstract interface com.sun.source.tree.ErroneousTree
 intf com.sun.source.tree.ExpressionTree
 meth public abstract java.util.List<? extends com.sun.source.tree.Tree> getErrorTrees()
@@ -471,21 +470,11 @@
 meth public abstract com.sun.source.tree.Tree getQualifiedIdentifier()
 
 CLSS public abstract interface com.sun.source.tree.InstanceOfTree
-innr public final static !enum TestKind
 intf com.sun.source.tree.ExpressionTree
 meth public abstract com.sun.source.tree.ExpressionTree getExpression()
-meth public abstract com.sun.source.tree.InstanceOfTree$TestKind getTestKind()
 meth public abstract com.sun.source.tree.PatternTree getPattern()
 meth public abstract com.sun.source.tree.Tree getType()
 
-CLSS public final static !enum com.sun.source.tree.InstanceOfTree$TestKind
- outer com.sun.source.tree.InstanceOfTree
-fld public final static com.sun.source.tree.InstanceOfTree$TestKind PATTERN
-fld public final static com.sun.source.tree.InstanceOfTree$TestKind TYPE
-meth public static com.sun.source.tree.InstanceOfTree$TestKind valueOf(java.lang.String)
-meth public static com.sun.source.tree.InstanceOfTree$TestKind[] values()
-supr java.lang.Enum<com.sun.source.tree.InstanceOfTree$TestKind>
-
 CLSS public abstract interface com.sun.source.tree.IntersectionTypeTree
 intf com.sun.source.tree.Tree
 meth public abstract java.util.List<? extends com.sun.source.tree.Tree> getBounds()
@@ -611,17 +600,12 @@
 meth public abstract com.sun.source.tree.Tree getType()
 meth public abstract java.util.List<? extends com.sun.source.tree.Tree> getTypeArguments()
 
-CLSS public abstract interface com.sun.source.tree.ParenthesizedPatternTree
-intf com.sun.source.tree.PatternTree
-meth public abstract com.sun.source.tree.PatternTree getPattern()
-
 CLSS public abstract interface com.sun.source.tree.ParenthesizedTree
 intf com.sun.source.tree.ExpressionTree
 meth public abstract com.sun.source.tree.ExpressionTree getExpression()
 
 CLSS public abstract interface com.sun.source.tree.PatternCaseLabelTree
 intf com.sun.source.tree.CaseLabelTree
-meth public abstract com.sun.source.tree.ExpressionTree getGuard()
 meth public abstract com.sun.source.tree.PatternTree getPattern()
 
 CLSS public abstract interface com.sun.source.tree.PatternTree
@@ -655,6 +639,12 @@
 CLSS public abstract interface com.sun.source.tree.StatementTree
 intf com.sun.source.tree.Tree
 
+CLSS public abstract interface com.sun.source.tree.StringTemplateTree
+intf com.sun.source.tree.ExpressionTree
+meth public abstract com.sun.source.tree.ExpressionTree getProcessor()
+meth public abstract java.util.List<? extends com.sun.source.tree.ExpressionTree> getExpressions()
+meth public abstract java.util.List<java.lang.String> getFragments()
+
 CLSS public abstract interface com.sun.source.tree.SwitchExpressionTree
 intf com.sun.source.tree.ExpressionTree
 meth public abstract com.sun.source.tree.ExpressionTree getExpression()
@@ -686,6 +676,7 @@
 fld public final static com.sun.source.tree.Tree$Kind ANNOTATED_TYPE
 fld public final static com.sun.source.tree.Tree$Kind ANNOTATION
 fld public final static com.sun.source.tree.Tree$Kind ANNOTATION_TYPE
+fld public final static com.sun.source.tree.Tree$Kind ANY_PATTERN
 fld public final static com.sun.source.tree.Tree$Kind ARRAY_ACCESS
 fld public final static com.sun.source.tree.Tree$Kind ARRAY_TYPE
 fld public final static com.sun.source.tree.Tree$Kind ASSERT
@@ -759,7 +750,6 @@
 fld public final static com.sun.source.tree.Tree$Kind PACKAGE
 fld public final static com.sun.source.tree.Tree$Kind PARAMETERIZED_TYPE
 fld public final static com.sun.source.tree.Tree$Kind PARENTHESIZED
-fld public final static com.sun.source.tree.Tree$Kind PARENTHESIZED_PATTERN
 fld public final static com.sun.source.tree.Tree$Kind PATTERN_CASE_LABEL
 fld public final static com.sun.source.tree.Tree$Kind PLUS
 fld public final static com.sun.source.tree.Tree$Kind PLUS_ASSIGNMENT
@@ -781,6 +771,7 @@
 fld public final static com.sun.source.tree.Tree$Kind SWITCH
 fld public final static com.sun.source.tree.Tree$Kind SWITCH_EXPRESSION
 fld public final static com.sun.source.tree.Tree$Kind SYNCHRONIZED
+fld public final static com.sun.source.tree.Tree$Kind TEMPLATE
 fld public final static com.sun.source.tree.Tree$Kind THROW
 fld public final static com.sun.source.tree.Tree$Kind TRY
 fld public final static com.sun.source.tree.Tree$Kind TYPE_ANNOTATION
@@ -807,6 +798,7 @@
 CLSS public abstract interface com.sun.source.tree.TreeVisitor<%0 extends java.lang.Object, %1 extends java.lang.Object>
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.tree.TreeVisitor%1})
@@ -853,12 +845,12 @@
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.tree.TreeVisitor%1})
-meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.tree.TreeVisitor%1})
@@ -942,6 +934,7 @@
 meth public abstract com.sun.source.doctree.EndElementTree newEndElementTree(javax.lang.model.element.Name)
 meth public abstract com.sun.source.doctree.EntityTree newEntityTree(javax.lang.model.element.Name)
 meth public abstract com.sun.source.doctree.ErroneousTree newErroneousTree(java.lang.String,javax.tools.Diagnostic<javax.tools.JavaFileObject>)
+meth public abstract com.sun.source.doctree.EscapeTree newEscapeTree(char)
 meth public abstract com.sun.source.doctree.HiddenTree newHiddenTree(java.util.List<? extends com.sun.source.doctree.DocTree>)
 meth public abstract com.sun.source.doctree.IdentifierTree newIdentifierTree(javax.lang.model.element.Name)
 meth public abstract com.sun.source.doctree.IndexTree newIndexTree(com.sun.source.doctree.DocTree,java.util.List<? extends com.sun.source.doctree.DocTree>)
@@ -1015,6 +1008,7 @@
 meth public {com.sun.source.util.DocTreeScanner%0} visitEndElement(com.sun.source.doctree.EndElementTree,{com.sun.source.util.DocTreeScanner%1})
 meth public {com.sun.source.util.DocTreeScanner%0} visitEntity(com.sun.source.doctree.EntityTree,{com.sun.source.util.DocTreeScanner%1})
 meth public {com.sun.source.util.DocTreeScanner%0} visitErroneous(com.sun.source.doctree.ErroneousTree,{com.sun.source.util.DocTreeScanner%1})
+meth public {com.sun.source.util.DocTreeScanner%0} visitEscape(com.sun.source.doctree.EscapeTree,{com.sun.source.util.DocTreeScanner%1})
 meth public {com.sun.source.util.DocTreeScanner%0} visitHidden(com.sun.source.doctree.HiddenTree,{com.sun.source.util.DocTreeScanner%1})
 meth public {com.sun.source.util.DocTreeScanner%0} visitIdentifier(com.sun.source.doctree.IdentifierTree,{com.sun.source.util.DocTreeScanner%1})
 meth public {com.sun.source.util.DocTreeScanner%0} visitIndex(com.sun.source.doctree.IndexTree,{com.sun.source.util.DocTreeScanner%1})
@@ -1066,7 +1060,7 @@
 supr com.sun.source.util.Trees
 
 CLSS public abstract com.sun.source.util.JavacTask
-cons public init()
+cons protected init()
 intf javax.tools.JavaCompiler$CompilationTask
 meth public abstract java.lang.Iterable<? extends com.sun.source.tree.CompilationUnitTree> parse() throws java.io.IOException
 meth public abstract java.lang.Iterable<? extends javax.lang.model.element.Element> analyze() throws java.io.IOException
@@ -1107,6 +1101,7 @@
 meth public {com.sun.source.util.SimpleDocTreeVisitor%0} visitEndElement(com.sun.source.doctree.EndElementTree,{com.sun.source.util.SimpleDocTreeVisitor%1})
 meth public {com.sun.source.util.SimpleDocTreeVisitor%0} visitEntity(com.sun.source.doctree.EntityTree,{com.sun.source.util.SimpleDocTreeVisitor%1})
 meth public {com.sun.source.util.SimpleDocTreeVisitor%0} visitErroneous(com.sun.source.doctree.ErroneousTree,{com.sun.source.util.SimpleDocTreeVisitor%1})
+meth public {com.sun.source.util.SimpleDocTreeVisitor%0} visitEscape(com.sun.source.doctree.EscapeTree,{com.sun.source.util.SimpleDocTreeVisitor%1})
 meth public {com.sun.source.util.SimpleDocTreeVisitor%0} visitHidden(com.sun.source.doctree.HiddenTree,{com.sun.source.util.SimpleDocTreeVisitor%1})
 meth public {com.sun.source.util.SimpleDocTreeVisitor%0} visitIdentifier(com.sun.source.doctree.IdentifierTree,{com.sun.source.util.SimpleDocTreeVisitor%1})
 meth public {com.sun.source.util.SimpleDocTreeVisitor%0} visitIndex(com.sun.source.doctree.IndexTree,{com.sun.source.util.SimpleDocTreeVisitor%1})
@@ -1147,6 +1142,7 @@
 meth public final {com.sun.source.util.SimpleTreeVisitor%0} visit(java.lang.Iterable<? extends com.sun.source.tree.Tree>,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.util.SimpleTreeVisitor%1})
+meth public {com.sun.source.util.SimpleTreeVisitor%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.util.SimpleTreeVisitor%1})
@@ -1193,12 +1189,12 @@
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.util.SimpleTreeVisitor%1})
-meth public {com.sun.source.util.SimpleTreeVisitor%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.util.SimpleTreeVisitor%1})
+meth public {com.sun.source.util.SimpleTreeVisitor%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.util.SimpleTreeVisitor%1})
 meth public {com.sun.source.util.SimpleTreeVisitor%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.util.SimpleTreeVisitor%1})
@@ -1279,6 +1275,7 @@
 meth public {com.sun.source.util.TreeScanner%0} scan(java.lang.Iterable<? extends com.sun.source.tree.Tree>,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.util.TreeScanner%1})
@@ -1325,12 +1322,12 @@
 meth public {com.sun.source.util.TreeScanner%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.util.TreeScanner%1})
-meth public {com.sun.source.util.TreeScanner%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.util.TreeScanner%1})
@@ -1635,6 +1632,7 @@
 fld public final static javax.lang.model.SourceVersion RELEASE_19
 fld public final static javax.lang.model.SourceVersion RELEASE_2
 fld public final static javax.lang.model.SourceVersion RELEASE_20
+fld public final static javax.lang.model.SourceVersion RELEASE_21
 fld public final static javax.lang.model.SourceVersion RELEASE_3
 fld public final static javax.lang.model.SourceVersion RELEASE_4
 fld public final static javax.lang.model.SourceVersion RELEASE_5
@@ -1913,6 +1911,7 @@
 meth public abstract javax.lang.model.element.NestingKind getNestingKind()
 meth public abstract javax.lang.model.type.TypeMirror asType()
 meth public abstract javax.lang.model.type.TypeMirror getSuperclass()
+meth public boolean isUnnamed()
 meth public java.util.List<? extends javax.lang.model.element.RecordComponentElement> getRecordComponents()
 meth public java.util.List<? extends javax.lang.model.type.TypeMirror> getPermittedSubclasses()
 
@@ -1950,6 +1949,7 @@
 meth public abstract javax.lang.model.element.Element getEnclosingElement()
 meth public abstract javax.lang.model.element.Name getSimpleName()
 meth public abstract javax.lang.model.type.TypeMirror asType()
+meth public boolean isUnnamed()
 
 CLSS public abstract interface javax.lang.model.type.ArrayType
 intf javax.lang.model.type.ReferenceType
@@ -2078,7 +2078,7 @@
 meth public abstract javax.lang.model.type.TypeMirror getSuperBound()
 
 CLSS public abstract javax.lang.model.util.AbstractAnnotationValueVisitor14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 supr javax.lang.model.util.AbstractAnnotationValueVisitor9<{javax.lang.model.util.AbstractAnnotationValueVisitor14%0},{javax.lang.model.util.AbstractAnnotationValueVisitor14%1}>
 
@@ -2109,7 +2109,7 @@
 supr javax.lang.model.util.AbstractAnnotationValueVisitor8<{javax.lang.model.util.AbstractAnnotationValueVisitor9%0},{javax.lang.model.util.AbstractAnnotationValueVisitor9%1}>
 
 CLSS public abstract javax.lang.model.util.AbstractElementVisitor14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 meth public abstract {javax.lang.model.util.AbstractElementVisitor14%0} visitRecordComponent(javax.lang.model.element.RecordComponentElement,{javax.lang.model.util.AbstractElementVisitor14%1})
 supr javax.lang.model.util.AbstractElementVisitor9<{javax.lang.model.util.AbstractElementVisitor14%0},{javax.lang.model.util.AbstractElementVisitor14%1}>
@@ -2144,7 +2144,7 @@
 supr javax.lang.model.util.AbstractElementVisitor8<{javax.lang.model.util.AbstractElementVisitor9%0},{javax.lang.model.util.AbstractElementVisitor9%1}>
 
 CLSS public abstract javax.lang.model.util.AbstractTypeVisitor14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 supr javax.lang.model.util.AbstractTypeVisitor9<{javax.lang.model.util.AbstractTypeVisitor14%0},{javax.lang.model.util.AbstractTypeVisitor14%1}>
 
@@ -2202,7 +2202,7 @@
 hfds CONSTRUCTOR_KIND,FIELD_KINDS,METHOD_KIND,MODULE_KIND,PACKAGE_KIND,RECORD_COMPONENT_KIND,TYPE_KINDS
 
 CLSS public javax.lang.model.util.ElementKindVisitor14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 cons protected init({javax.lang.model.util.ElementKindVisitor14%0})
 meth public {javax.lang.model.util.ElementKindVisitor14%0} visitRecordComponent(javax.lang.model.element.RecordComponentElement,{javax.lang.model.util.ElementKindVisitor14%1})
@@ -2262,7 +2262,7 @@
 supr javax.lang.model.util.ElementKindVisitor8<{javax.lang.model.util.ElementKindVisitor9%0},{javax.lang.model.util.ElementKindVisitor9%1}>
 
 CLSS public javax.lang.model.util.ElementScanner14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 cons protected init({javax.lang.model.util.ElementScanner14%0})
 meth public {javax.lang.model.util.ElementScanner14%0} visitExecutable(javax.lang.model.element.ExecutableElement,{javax.lang.model.util.ElementScanner14%1})
@@ -2355,7 +2355,7 @@
 supr java.lang.Enum<javax.lang.model.util.Elements$Origin>
 
 CLSS public javax.lang.model.util.SimpleAnnotationValueVisitor14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 cons protected init({javax.lang.model.util.SimpleAnnotationValueVisitor14%0})
 supr javax.lang.model.util.SimpleAnnotationValueVisitor9<{javax.lang.model.util.SimpleAnnotationValueVisitor14%0},{javax.lang.model.util.SimpleAnnotationValueVisitor14%1}>
@@ -2404,7 +2404,7 @@
 supr javax.lang.model.util.SimpleAnnotationValueVisitor8<{javax.lang.model.util.SimpleAnnotationValueVisitor9%0},{javax.lang.model.util.SimpleAnnotationValueVisitor9%1}>
 
 CLSS public javax.lang.model.util.SimpleElementVisitor14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 cons protected init({javax.lang.model.util.SimpleElementVisitor14%0})
 meth public {javax.lang.model.util.SimpleElementVisitor14%0} visitRecordComponent(javax.lang.model.element.RecordComponentElement,{javax.lang.model.util.SimpleElementVisitor14%1})
@@ -2448,7 +2448,7 @@
 supr javax.lang.model.util.SimpleElementVisitor8<{javax.lang.model.util.SimpleElementVisitor9%0},{javax.lang.model.util.SimpleElementVisitor9%1}>
 
 CLSS public javax.lang.model.util.SimpleTypeVisitor14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 cons protected init({javax.lang.model.util.SimpleTypeVisitor14%0})
 supr javax.lang.model.util.SimpleTypeVisitor9<{javax.lang.model.util.SimpleTypeVisitor14%0},{javax.lang.model.util.SimpleTypeVisitor14%1}>
@@ -2495,7 +2495,7 @@
 supr javax.lang.model.util.SimpleTypeVisitor8<{javax.lang.model.util.SimpleTypeVisitor9%0},{javax.lang.model.util.SimpleTypeVisitor9%1}>
 
 CLSS public javax.lang.model.util.TypeKindVisitor14<%0 extends java.lang.Object, %1 extends java.lang.Object>
- anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_20)
+ anno 0 javax.annotation.processing.SupportedSourceVersion(javax.lang.model.SourceVersion value=RELEASE_21)
 cons protected init()
 cons protected init({javax.lang.model.util.TypeKindVisitor14%0})
 supr javax.lang.model.util.TypeKindVisitor9<{javax.lang.model.util.TypeKindVisitor14%0},{javax.lang.model.util.TypeKindVisitor14%1}>
diff --git a/java/libs.javacapi/nbproject/project.xml b/java/libs.javacapi/nbproject/project.xml
index dede71e..f9c89a2 100644
--- a/java/libs.javacapi/nbproject/project.xml
+++ b/java/libs.javacapi/nbproject/project.xml
@@ -40,11 +40,11 @@
             </public-packages>
             <class-path-extension>
                 <runtime-relative-path />
-                <binary-origin>external/nb-javac-jdk-20+34-api.jar</binary-origin>
+                <binary-origin>external/nb-javac-jdk-21+26-api.jar</binary-origin>
             </class-path-extension>
             <class-path-extension>
                 <runtime-relative-path />
-                <binary-origin>external/nb-javac-jdk-20+34.jar</binary-origin>
+                <binary-origin>external/nb-javac-jdk-21+26.jar</binary-origin>
             </class-path-extension>
         </data>
     </configuration>
diff --git a/java/libs.nbjavacapi/external/binaries-list b/java/libs.nbjavacapi/external/binaries-list
index b4c08de..daaef40 100644
--- a/java/libs.nbjavacapi/external/binaries-list
+++ b/java/libs.nbjavacapi/external/binaries-list
@@ -14,5 +14,5 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
-D9F90625B422470E7F827D5E3C770879B247A5CB com.dukescript.nbjavac:nb-javac:jdk-20+34:api
-40ABE61A0214D3AD8CC7554CB895BF6E9A392EF4 com.dukescript.nbjavac:nb-javac:jdk-20+34
+2D8ACD8AAD9C74FDAAA9D7BBAF4278A57E2D86E0 com.dukescript.nbjavac:nb-javac:jdk-21+26:api
+9A9BAB9DC8497962967345A59CDD8CBC9D73A40D com.dukescript.nbjavac:nb-javac:jdk-21+26
diff --git a/java/libs.nbjavacapi/external/nb-javac-jdk-20+34-license.txt b/java/libs.nbjavacapi/external/nb-javac-jdk-20+34-license.txt
deleted file mode 100644
index 6c5ece9..0000000
--- a/java/libs.nbjavacapi/external/nb-javac-jdk-20+34-license.txt
+++ /dev/null
@@ -1,357 +0,0 @@
-Name: Javac Compiler Implementation
-Description: Javac Compiler Implementation
-Version: jdk-20+34
-Files: nb-javac-jdk-20+34-api.jar nb-javac-jdk-20+34.jar
-License: GPL-2-CP
-Origin: OpenJDK (https://github.com/openjdk/jdk20)
-Source: https://github.com/openjdk/jdk20
-Type: optional,reviewed
-Comment: The binary has been reviewed to be under the Classpath Exception as a whole. Optional at runtime, but used by default.
-
-The GNU General Public License (GPL)
-
-Version 2, June 1991
-
-Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-
-Everyone is permitted to copy and distribute verbatim copies of this license
-document, but changing it is not allowed.
-
-Preamble
-
-The licenses for most software are designed to take away your freedom to share
-and change it.  By contrast, the GNU General Public License is intended to
-guarantee your freedom to share and change free software--to make sure the
-software is free for all its users.  This General Public License applies to
-most of the Free Software Foundation's software and to any other program whose
-authors commit to using it.  (Some other Free Software Foundation software is
-covered by the GNU Library General Public License instead.) You can apply it to
-your programs, too.
-
-When we speak of free software, we are referring to freedom, not price.  Our
-General Public Licenses are designed to make sure that you have the freedom to
-distribute copies of free software (and charge for this service if you wish),
-that you receive source code or can get it if you want it, that you can change
-the software or use pieces of it in new free programs; and that you know you
-can do these things.
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-everyone understands that there is no warranty for this free software.  If the
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-follow.
-
-TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
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-use to the public, the best way to achieve this is to make it free software
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-    under the terms of the GNU General Public License as published by the Free
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-    any later version.
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-    This program is distributed in the hope that it will be useful, but WITHOUT
-    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
-    more details.
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-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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-Also add information on how to contact you by electronic and paper mail.
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-    Gnomovision version 69, Copyright (C) year name of author Gnomovision comes
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-    type 'show c' for details.
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-The hypothetical commands 'show w' and 'show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may be
-called something other than 'show w' and 'show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.  Here
-is a sample; alter the names:
-
-    Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-    'Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-    signature of Ty Coon, 1 April 1989
-
-    Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Library General Public
-License instead of this License.
-
-
-"CLASSPATH" EXCEPTION TO THE GPL
-
-Certain source files distributed by Oracle America and/or its affiliates are
-subject to the following clarification and special exception to the GPL, but
-only where Oracle has expressly included in the particular source file's header
-the words "Oracle designates this particular file as subject to the "Classpath"
-exception as provided by Oracle in the LICENSE file that accompanied this code."
-
-    Linking this library statically or dynamically with other modules is making
-    a combined work based on this library.  Thus, the terms and conditions of
-    the GNU General Public License cover the whole combination.
-
-    As a special exception, the copyright holders of this library give you
-    permission to link this library with independent modules to produce an
-    executable, regardless of the license terms of these independent modules,
-    and to copy and distribute the resulting executable under terms of your
-    choice, provided that you also meet, for each linked independent module,
-    the terms and conditions of the license of that module.  An independent
-    module is a module which is not derived from or based on this library.  If
-    you modify this library, you may extend this exception to your version of
-    the library, but you are not obligated to do so.  If you do not wish to do
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diff --git a/java/libs.javacapi/external/nb-javac-jdk-20+34-license.txt b/java/libs.nbjavacapi/external/nb-javac-jdk-21+26-license.txt
similarity index 98%
copy from java/libs.javacapi/external/nb-javac-jdk-20+34-license.txt
copy to java/libs.nbjavacapi/external/nb-javac-jdk-21+26-license.txt
index 6c5ece9..dfe886b 100644
--- a/java/libs.javacapi/external/nb-javac-jdk-20+34-license.txt
+++ b/java/libs.nbjavacapi/external/nb-javac-jdk-21+26-license.txt
@@ -1,10 +1,10 @@
 Name: Javac Compiler Implementation
 Description: Javac Compiler Implementation
-Version: jdk-20+34
-Files: nb-javac-jdk-20+34-api.jar nb-javac-jdk-20+34.jar
+Version: jdk-21+26
+Files: nb-javac-jdk-21+26-api.jar nb-javac-jdk-21+26.jar
 License: GPL-2-CP
-Origin: OpenJDK (https://github.com/openjdk/jdk20)
-Source: https://github.com/openjdk/jdk20
+Origin: OpenJDK (https://github.com/openjdk/jdk21)
+Source: https://github.com/openjdk/jdk21
 Type: optional,reviewed
 Comment: The binary has been reviewed to be under the Classpath Exception as a whole. Optional at runtime, but used by default.
 
diff --git a/java/libs.nbjavacapi/manifest.mf b/java/libs.nbjavacapi/manifest.mf
index 85d1778..d3e5be6 100644
--- a/java/libs.nbjavacapi/manifest.mf
+++ b/java/libs.nbjavacapi/manifest.mf
@@ -2,7 +2,7 @@
 AutoUpdate-Show-In-Client: true
 OpenIDE-Module: org.netbeans.libs.nbjavacapi
 OpenIDE-Module-Localizing-Bundle: org/netbeans/modules/nbjavac/api/Bundle.properties
-OpenIDE-Module-Specification-Version: 20.2
+OpenIDE-Module-Specification-Version: 21.0
 OpenIDE-Module-Hide-Classpath-Packages: com.sun.javadoc.**, com.sun.source.**, javax.annotation.processing.**, javax.lang.model.**, javax.tools.**, com.sun.tools.javac.** com.sun.tools.javac.**, com.sun.tools.javadoc.**, com.sun.tools.javap.**, com.sun.tools.classfile.**, com.sun.tools.doclint.**
 OpenIDE-Module-Fragment-Host: org.netbeans.libs.javacapi
 OpenIDE-Module-Provides: org.netbeans.libs.nbjavac
diff --git a/java/libs.nbjavacapi/nbproject/project.properties b/java/libs.nbjavacapi/nbproject/project.properties
index ffb2ca3..f55d779 100644
--- a/java/libs.nbjavacapi/nbproject/project.properties
+++ b/java/libs.nbjavacapi/nbproject/project.properties
@@ -18,5 +18,5 @@
 javac.source=1.8
 javac.compilerargs=-Xlint -Xlint:-serial
 license.file.override=${nb_all}/nbbuild/licenses/GPL-2-CP
-release.external/nb-javac-jdk-20+34-api.jar=modules/ext/nb-javac-jdk-20-34-api.jar
-release.external/nb-javac-jdk-20+34.jar=modules/ext/nb-javac-jdk-20-34.jar
+release.external/nb-javac-jdk-21+26-api.jar=modules/ext/nb-javac-jdk-21-26-api.jar
+release.external/nb-javac-jdk-21+26.jar=modules/ext/nb-javac-jdk-21-26.jar
diff --git a/java/libs.nbjavacapi/nbproject/project.xml b/java/libs.nbjavacapi/nbproject/project.xml
index 76cf8a6..c2947e8 100644
--- a/java/libs.nbjavacapi/nbproject/project.xml
+++ b/java/libs.nbjavacapi/nbproject/project.xml
@@ -36,12 +36,12 @@
             </module-dependencies>
             <public-packages/>
             <class-path-extension>
-                <runtime-relative-path>ext/nb-javac-jdk-20-34-api.jar</runtime-relative-path>
-                <binary-origin>external/nb-javac-jdk-20+34-api.jar</binary-origin>
+                <runtime-relative-path>ext/nb-javac-jdk-21-26-api.jar</runtime-relative-path>
+                <binary-origin>external/nb-javac-jdk-21+26-api.jar</binary-origin>
             </class-path-extension>
             <class-path-extension>
-                <runtime-relative-path>ext/nb-javac-jdk-20-34.jar</runtime-relative-path>
-                <binary-origin>external/nb-javac-jdk-20+34.jar</binary-origin>
+                <runtime-relative-path>ext/nb-javac-jdk-21-26.jar</runtime-relative-path>
+                <binary-origin>external/nb-javac-jdk-21+26.jar</binary-origin>
             </class-path-extension>
         </data>
     </configuration>
diff --git a/java/libs.nbjavacapi/src/org/netbeans/modules/nbjavac/api/Bundle.properties b/java/libs.nbjavacapi/src/org/netbeans/modules/nbjavac/api/Bundle.properties
index b70a350..cefdd78 100644
--- a/java/libs.nbjavacapi/src/org/netbeans/modules/nbjavac/api/Bundle.properties
+++ b/java/libs.nbjavacapi/src/org/netbeans/modules/nbjavac/api/Bundle.properties
@@ -18,6 +18,6 @@
 OpenIDE-Module-Display-Category=Java
 OpenIDE-Module-Long-Description=\
     This library provides a Java language parser for the IDE. \
-    Supports JDK-20 features.
+    Supports JDK-21 features.
 OpenIDE-Module-Name=The nb-javac Java editing support library
 OpenIDE-Module-Short-Description=The nb-javac Java editing support library
diff --git a/java/refactoring.java/nbproject/org-netbeans-modules-refactoring-java.sig b/java/refactoring.java/nbproject/org-netbeans-modules-refactoring-java.sig
index e91bd9f..9673c08 100644
--- a/java/refactoring.java/nbproject/org-netbeans-modules-refactoring-java.sig
+++ b/java/refactoring.java/nbproject/org-netbeans-modules-refactoring-java.sig
@@ -1,5 +1,5 @@
 #Signature file v4.1
-#Version 1.82.0
+#Version 1.83.0
 
 CLSS public abstract interface com.sun.source.doctree.DocTreeVisitor<%0 extends java.lang.Object, %1 extends java.lang.Object>
 meth public abstract {com.sun.source.doctree.DocTreeVisitor%0} visitAttribute(com.sun.source.doctree.AttributeTree,{com.sun.source.doctree.DocTreeVisitor%1})
@@ -32,6 +32,7 @@
 meth public abstract {com.sun.source.doctree.DocTreeVisitor%0} visitValue(com.sun.source.doctree.ValueTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public abstract {com.sun.source.doctree.DocTreeVisitor%0} visitVersion(com.sun.source.doctree.VersionTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public {com.sun.source.doctree.DocTreeVisitor%0} visitDocType(com.sun.source.doctree.DocTypeTree,{com.sun.source.doctree.DocTreeVisitor%1})
+meth public {com.sun.source.doctree.DocTreeVisitor%0} visitEscape(com.sun.source.doctree.EscapeTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public {com.sun.source.doctree.DocTreeVisitor%0} visitHidden(com.sun.source.doctree.HiddenTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public {com.sun.source.doctree.DocTreeVisitor%0} visitIndex(com.sun.source.doctree.IndexTree,{com.sun.source.doctree.DocTreeVisitor%1})
 meth public {com.sun.source.doctree.DocTreeVisitor%0} visitProvides(com.sun.source.doctree.ProvidesTree,{com.sun.source.doctree.DocTreeVisitor%1})
@@ -44,6 +45,7 @@
 CLSS public abstract interface com.sun.source.tree.TreeVisitor<%0 extends java.lang.Object, %1 extends java.lang.Object>
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.tree.TreeVisitor%1})
@@ -90,12 +92,12 @@
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.tree.TreeVisitor%1})
-meth public abstract {com.sun.source.tree.TreeVisitor%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.tree.TreeVisitor%1})
+meth public abstract {com.sun.source.tree.TreeVisitor%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.tree.TreeVisitor%1})
 meth public abstract {com.sun.source.tree.TreeVisitor%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.tree.TreeVisitor%1})
@@ -127,6 +129,7 @@
 meth public {com.sun.source.util.TreeScanner%0} scan(java.lang.Iterable<? extends com.sun.source.tree.Tree>,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotatedType(com.sun.source.tree.AnnotatedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAnnotation(com.sun.source.tree.AnnotationTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitAnyPattern(com.sun.source.tree.AnyPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayAccess(com.sun.source.tree.ArrayAccessTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitArrayType(com.sun.source.tree.ArrayTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitAssert(com.sun.source.tree.AssertTree,{com.sun.source.util.TreeScanner%1})
@@ -173,12 +176,12 @@
 meth public {com.sun.source.util.TreeScanner%0} visitPackage(com.sun.source.tree.PackageTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParameterizedType(com.sun.source.tree.ParameterizedTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitParenthesized(com.sun.source.tree.ParenthesizedTree,{com.sun.source.util.TreeScanner%1})
-meth public {com.sun.source.util.TreeScanner%0} visitParenthesizedPattern(com.sun.source.tree.ParenthesizedPatternTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPatternCaseLabel(com.sun.source.tree.PatternCaseLabelTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitPrimitiveType(com.sun.source.tree.PrimitiveTypeTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitProvides(com.sun.source.tree.ProvidesTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitRequires(com.sun.source.tree.RequiresTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitReturn(com.sun.source.tree.ReturnTree,{com.sun.source.util.TreeScanner%1})
+meth public {com.sun.source.util.TreeScanner%0} visitStringTemplate(com.sun.source.tree.StringTemplateTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitch(com.sun.source.tree.SwitchTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSwitchExpression(com.sun.source.tree.SwitchExpressionTree,{com.sun.source.util.TreeScanner%1})
 meth public {com.sun.source.util.TreeScanner%0} visitSynchronized(com.sun.source.tree.SynchronizedTree,{com.sun.source.util.TreeScanner%1})
diff --git a/java/spi.java.hints/src/org/netbeans/modules/java/hints/spiimpl/JackpotTrees.java b/java/spi.java.hints/src/org/netbeans/modules/java/hints/spiimpl/JackpotTrees.java
index 2634d5b..0843805 100644
--- a/java/spi.java.hints/src/org/netbeans/modules/java/hints/spiimpl/JackpotTrees.java
+++ b/java/spi.java.hints/src/org/netbeans/modules/java/hints/spiimpl/JackpotTrees.java
@@ -92,8 +92,8 @@
         private final Name ident;
         private final JCIdent jcIdent;
 
-        public CaseWildcard(Name ident, JCIdent jcIdent, CaseKind caseKind, List<JCCaseLabel> labels, List<JCStatement> stats, JCTree body) {
-            super(caseKind, labels, stats, body);  // JDK 8-17+
+        public CaseWildcard(Name ident, JCIdent jcIdent, CaseKind caseKind, List<JCCaseLabel> labels, JCExpression guard, List<JCStatement> stats, JCTree body) {
+            super(caseKind, labels, guard, stats, body);
             this.ident = ident;
             this.jcIdent = jcIdent;
         }
diff --git a/java/spi.java.hints/src/org/netbeans/modules/java/hints/spiimpl/Utilities.java b/java/spi.java.hints/src/org/netbeans/modules/java/hints/spiimpl/Utilities.java
index 2776dfb..244f9d2 100644
--- a/java/spi.java.hints/src/org/netbeans/modules/java/hints/spiimpl/Utilities.java
+++ b/java/spi.java.hints/src/org/netbeans/modules/java/hints/spiimpl/Utilities.java
@@ -1392,7 +1392,7 @@
         }
         
         @Override
-        public com.sun.tools.javac.util.List<JCTree> classOrInterfaceOrRecordBodyDeclaration(com.sun.tools.javac.util.Name className, boolean isInterface, boolean isRecord) {
+        public com.sun.tools.javac.util.List<JCTree> classOrInterfaceOrRecordBodyDeclaration(JCModifiers mods, com.sun.tools.javac.util.Name className, boolean isInterface, boolean isRecord) {
 
             if (token.kind == TokenKind.IDENTIFIER) {
                 if (token.name().startsWith(dollar)) {
@@ -1409,7 +1409,7 @@
                 }
             }
 
-            return super.classOrInterfaceOrRecordBodyDeclaration(className, isInterface, isRecord);
+            return super.classOrInterfaceOrRecordBodyDeclaration(mods, className, isInterface, isRecord);
         }
         
         @Override
@@ -1445,7 +1445,7 @@
                         JCIdent identTree = F.at(pos).Ident(name);
                         JCConstantCaseLabel labelTree = F.at(pos).ConstantCaseLabel(identTree);
                         return com.sun.tools.javac.util.List.of(
-                                new JackpotTrees.CaseWildcard(name, identTree, STATEMENT, com.sun.tools.javac.util.List.of(labelTree), com.sun.tools.javac.util.List.nil(), null)
+                                new JackpotTrees.CaseWildcard(name, identTree, STATEMENT, com.sun.tools.javac.util.List.of(labelTree), null, com.sun.tools.javac.util.List.nil(), null)
                         );
                     }
                 }
diff --git a/nbbuild/antsrc/org/netbeans/nbbuild/extlibs/DownloadBinaries.java b/nbbuild/antsrc/org/netbeans/nbbuild/extlibs/DownloadBinaries.java
index 4f666e9..aa66068 100644
--- a/nbbuild/antsrc/org/netbeans/nbbuild/extlibs/DownloadBinaries.java
+++ b/nbbuild/antsrc/org/netbeans/nbbuild/extlibs/DownloadBinaries.java
@@ -63,7 +63,7 @@
 public class DownloadBinaries extends Task {
     private static final String MAVEN_REPO = "https://repo1.maven.org/maven2/";
 
-    private static final Pattern URL_PATTERN = Pattern.compile("(https?://\\S*[^/\\s]+)\\s+(\\S+)$");
+    private static final Pattern URL_PATTERN = Pattern.compile("((https?://|file:)\\S*[^/\\s]+)\\s+(\\S+)$");
 
     private File cache;
     /**
@@ -167,7 +167,7 @@
                                 MavenCoordinate mc = MavenCoordinate.fromGradleFormat(hashAndFile[1]);
                                 success &= fillInFile(hashAndFile[0], mc.toArtifactFilename(), manifest, () -> mavenFile(mc));
                             } else if (urlMatcher.matches()) {
-                                success &= fillInFile(hashAndFile[0], urlMatcher.group(2), manifest, () -> downloadFromServer(this, new URL(urlMatcher.group(1))));
+                                success &= fillInFile(hashAndFile[0], urlMatcher.group(3), manifest, () -> downloadFromServer(this, new URL(urlMatcher.group(1))));
                             } else {
                                 success &= fillInFile(hashAndFile[0], hashAndFile[1], manifest, () -> legacyDownload(hashAndFile[0] + "-" + hashAndFile[1]));
                             }
diff --git a/nbbuild/antsrc/org/netbeans/nbbuild/extlibs/ignored-overlaps b/nbbuild/antsrc/org/netbeans/nbbuild/extlibs/ignored-overlaps
index dc65dee..0955df9 100644
--- a/nbbuild/antsrc/org/netbeans/nbbuild/extlibs/ignored-overlaps
+++ b/nbbuild/antsrc/org/netbeans/nbbuild/extlibs/ignored-overlaps
@@ -97,8 +97,8 @@
 harness/apisupport.harness/external/launcher-12.5-distribution.zip platform/o.n.bootstrap/external/launcher-12.5-distribution.zip
 
 # only one is part of the product:
-java/libs.javacapi/external/nb-javac-jdk-20+34-api.jar java/libs.nbjavacapi/external/nb-javac-jdk-20+34-api.jar
-java/libs.javacapi/external/nb-javac-jdk-20+34.jar java/libs.nbjavacapi/external/nb-javac-jdk-20+34.jar
+java/libs.javacapi/external/nb-javac-jdk-21+26-api.jar java/libs.nbjavacapi/external/nb-javac-jdk-21+26-api.jar
+java/libs.javacapi/external/nb-javac-jdk-21+26.jar java/libs.nbjavacapi/external/nb-javac-jdk-21+26.jar
 
 # Used only in unittests for mysql db specific tests
 ide/db.metadata.model/external/mysql-connector-j-8.0.31.jar ide/db.mysql/external/mysql-connector-j-8.0.31.jar