WIP: Testing.
diff --git a/src/main/java/org/apache/maven/plugins/toolchain/GenerateMojo.java b/src/main/java/org/apache/maven/plugins/toolchain/GenerateMojo.java
new file mode 100644
index 0000000..dcad490
--- /dev/null
+++ b/src/main/java/org/apache/maven/plugins/toolchain/GenerateMojo.java
@@ -0,0 +1,53 @@
+package org.apache.maven.plugins.toolchain;
+
+/*
+ * 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.
+ */
+
+import java.nio.file.Paths;
+
+import org.apache.maven.execution.MavenSession;
+import org.apache.maven.plugin.AbstractMojo;
+import org.apache.maven.plugins.annotations.LifecyclePhase;
+import org.apache.maven.plugins.annotations.Mojo;
+import org.apache.maven.plugins.annotations.Parameter;
+
+/**
+ * @author khmarbaise
+ */
+@Mojo( name = "sdkman", defaultPhase = LifecyclePhase.NONE,
+ configurator = "toolchains-requirement-configurator",
+ threadSafe = true )
+public class GenerateMojo
+ extends AbstractMojo
+{
+ /**
+ * The current build session instance. This is used for toolchain manager API calls.
+ */
+ @Parameter( defaultValue = "${session}", readonly = true, required = true )
+ private MavenSession session;
+
+ @Override
+ public void execute()
+ {
+ SDKManJDKS sdkManJDKS = new SDKManJDKS( Paths.get( System.getProperty( "user.home" ) ) );
+ sdkManJDKS.listOfJdks().stream()
+ .forEach( jdk -> getLog().info( " JDK:" + jdk.getFileName() + " " + jdk.toAbsolutePath() ) );
+ }
+
+}
diff --git a/src/main/java/org/apache/maven/plugins/toolchain/SDKManJDKS.java b/src/main/java/org/apache/maven/plugins/toolchain/SDKManJDKS.java
new file mode 100644
index 0000000..1dd64f1
--- /dev/null
+++ b/src/main/java/org/apache/maven/plugins/toolchain/SDKManJDKS.java
@@ -0,0 +1,70 @@
+package org.apache.maven.plugins.toolchain;
+
+/*
+ * 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.
+ */
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+/**
+ * Find the locally installed JDKs which have been installed via
+ * <a href="https://sdkman.io">https://sdkman.io</a>
+ *
+ * @author Karl Heinz Marbaise
+ */
+public class SDKManJDKS
+{
+ private static final String SDKMAN_ROOT = ".sdkman";
+
+ /**
+ * We ignore the link in {@code .sdkman/candidates/java/current} for the current JDK.
+ */
+ private static final Predicate<Path> IGNORE_CURRENT_JDK_LINK = Files::isSymbolicLink;
+
+ private final Path userHome;
+
+ /**
+ * @param userHome The users home directory typically something like {@code /home/username}.
+ */
+ public SDKManJDKS( Path userHome )
+ {
+ this.userHome = userHome;
+ }
+
+ public List<Path> listOfJdks()
+ {
+ try ( Stream<Path> walk = Files.list(
+ this.userHome.resolve( SDKMAN_ROOT ).resolve( "candidates" ).resolve( "java" ) ) )
+ {
+ return walk.filter( Files::isDirectory )
+ .filter( IGNORE_CURRENT_JDK_LINK.negate() )
+ .collect( Collectors.toList() );
+ }
+ catch ( IOException e )
+ {
+ //TODO: Need to reconsider.
+ throw new RuntimeException( "IOException happened", e );
+ }
+ }
+}
