diff --git a/pom.xml b/pom.xml
index fe5e2c8..7634a01 100644
--- a/pom.xml
+++ b/pom.xml
@@ -65,7 +65,7 @@
     <mavenArchiverVersion>3.5.1</mavenArchiverVersion>
     <mavenFilteringVersion>3.2.0</mavenFilteringVersion>
     <mavenVersion>3.2.5</mavenVersion>
-    <javaVersion>7</javaVersion>
+    <javaVersion>8</javaVersion>
     <project.build.outputTimestamp>2021-09-05T09:31:59Z</project.build.outputTimestamp>
   </properties>
 
diff --git a/src/main/java/org/apache/maven/plugins/war/AbstractWarMojo.java b/src/main/java/org/apache/maven/plugins/war/AbstractWarMojo.java
index 2ab6047..24a8eb5 100644
--- a/src/main/java/org/apache/maven/plugins/war/AbstractWarMojo.java
+++ b/src/main/java/org/apache/maven/plugins/war/AbstractWarMojo.java
@@ -638,7 +638,7 @@
             this.artifactFactory = artifactFactory;
             this.filteringDeploymentDescriptors = filteringDeploymentDescriptors;
             this.nonFilteredFileExtensions =
-                nonFilteredFileExtensions == null ? Collections.<String>emptyList() : nonFilteredFileExtensions;
+                nonFilteredFileExtensions == null ? Collections.emptyList() : nonFilteredFileExtensions;
             this.resourceEncoding = resourceEncoding;
             this.propertiesEncoding = propertiesEncoding;
             // This is kinda stupid but if we loop over the current overlays and we request the path structure
diff --git a/src/main/java/org/apache/maven/plugins/war/packaging/AbstractWarPackagingTask.java b/src/main/java/org/apache/maven/plugins/war/packaging/AbstractWarPackagingTask.java
index d904fc5..171275f 100644
--- a/src/main/java/org/apache/maven/plugins/war/packaging/AbstractWarPackagingTask.java
+++ b/src/main/java/org/apache/maven/plugins/war/packaging/AbstractWarPackagingTask.java
@@ -21,6 +21,8 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.attribute.BasicFileAttributes;
 
 import org.apache.commons.io.input.XmlStreamReader;
 import org.apache.maven.artifact.Artifact;
@@ -342,14 +344,15 @@
     {
         context.addResource( targetFilename );
 
-        if ( onlyIfModified && destination.lastModified() >= source.lastModified() )
+        BasicFileAttributes readAttributes = Files.readAttributes( source.toPath(), BasicFileAttributes.class );
+        if ( onlyIfModified && destination.lastModified() >= readAttributes.lastModifiedTime().toMillis() )
         {
             context.getLog().debug( " * " + targetFilename + " is up to date." );
             return false;
         }
         else
         {
-            if ( source.isDirectory() )
+            if ( readAttributes.isDirectory() )
             {
                 context.getLog().warn( " + " + targetFilename + " is packaged from the source folder" );
 
@@ -364,16 +367,14 @@
                 {
                     String msg = "Failed to create " + targetFilename;
                     context.getLog().error( msg, e );
-                    IOException ioe = new IOException( msg );
-                    ioe.initCause( e );
-                    throw ioe;
+                    throw new IOException( msg, e );
                 }
             }
             else
             {
                 FileUtils.copyFile( source.getCanonicalFile(), destination );
                 // preserve timestamp
-                destination.setLastModified( source.lastModified() );
+                destination.setLastModified( readAttributes.lastModifiedTime().toMillis() );
                 context.getLog().debug( " + " + targetFilename + " has been copied." );
             }
             return true;
diff --git a/src/test/java/org/apache/maven/plugins/war/AbstractWarExplodedMojoTest.java b/src/test/java/org/apache/maven/plugins/war/AbstractWarExplodedMojoTest.java
index e562398..f140940 100644
--- a/src/test/java/org/apache/maven/plugins/war/AbstractWarExplodedMojoTest.java
+++ b/src/test/java/org/apache/maven/plugins/war/AbstractWarExplodedMojoTest.java
@@ -109,7 +109,7 @@
             }
         }
 
-        configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "workDirectory", workDirectory );
 
         return webAppDirectory;
diff --git a/src/test/java/org/apache/maven/plugins/war/WarExplodedMojoTest.java b/src/test/java/org/apache/maven/plugins/war/WarExplodedMojoTest.java
index 22ff280..45faf0f 100644
--- a/src/test/java/org/apache/maven/plugins/war/WarExplodedMojoTest.java
+++ b/src/test/java/org/apache/maven/plugins/war/WarExplodedMojoTest.java
@@ -80,7 +80,7 @@
 
         // configure mojo
         resources[0].setDirectory( webAppResource.getAbsolutePath() );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "webResources", resources );
         mojo.execute();
 
@@ -124,7 +124,7 @@
         // configure mojo
         resources[0].setDirectory( webAppResource.getAbsolutePath() );
         resources[0].setTargetPath( "targetPath" );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "webResources", resources );
         mojo.execute();
 
@@ -162,7 +162,7 @@
         File webAppDirectory = new File( getTestDirectory(), testId );
 
         // configure mojo
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.setWebXml( new File( xmlSource, "web.xml" ) );
         mojo.execute();
 
@@ -200,7 +200,7 @@
         File webAppDirectory = new File( getTestDirectory(), testId );
 
         // configure mojo
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.setContainerConfigXML( new File( xmlSource, "config.xml" ) );
         mojo.execute();
 
@@ -246,7 +246,7 @@
 
         // configure mojo
         project.addArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "workDirectory", workDirectory );
         mojo.execute();
 
@@ -293,7 +293,7 @@
 
         // configure mojo
         project.addArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "workDirectory", workDirectory );
         mojo.execute();
 
@@ -309,7 +309,7 @@
         expectedFile.setLastModified( time );
 
         project.addArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "workDirectory", workDirectory );
         mojo.execute();
 
@@ -394,7 +394,7 @@
 
         // configure mojo
         project.addArtifact( ejbArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -431,7 +431,7 @@
 
         // configure mojo
         project.addArtifact( jarArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -469,7 +469,7 @@
 
         // configure mojo
         project.addArtifact( ejbArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -507,7 +507,7 @@
 
         // configure mojo
         project.addArtifact( tldArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -545,7 +545,7 @@
 
         // configure mojo
         project.addArtifact( parartifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -585,7 +585,7 @@
 
         // configure mojo
         project.addArtifact( aarArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -625,7 +625,7 @@
 
         // configure mojo
         project.addArtifact( marArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -665,7 +665,7 @@
 
         // configure mojo
         project.addArtifact( xarArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -708,7 +708,7 @@
         ejbArtifactDup.setGroupId( "org.dup.ejb" );
         project.addArtifact( ejbArtifact );
         project.addArtifact( ejbArtifactDup );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -760,7 +760,7 @@
         project.addArtifact( ejbArtifact );
         project.addArtifact( ejbArtifactDup );
 
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -796,7 +796,7 @@
         File classesDir = createClassesDir( testId, false );
 
         // configure mojo
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -829,7 +829,7 @@
         File webAppDirectory = new File( getTestDirectory(), testId );
 
         // configure mojo
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "warSourceIncludes", "**/*sit.jsp" );
         setVariableValueToObject( mojo, "warSourceExcludes", "**/last*.*" );
         mojo.execute();
@@ -874,7 +874,7 @@
 
         // configure mojo
         project.addArtifact( includeexcludeWarArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "dependentWarIncludes", "**/*Include.jsp,**/*.xml" );
         setVariableValueToObject( mojo, "dependentWarExcludes", "**/*Exclude*,**/MANIFEST.MF" );
         setVariableValueToObject( mojo, "workDirectory", workDirectory );
@@ -919,7 +919,7 @@
         File webAppDirectory = new File( getTestDirectory(), testId );
 
         // configure mojo
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
 
         // destination file is already created manually containing an "error" string
         // source is newer than the destination file
@@ -982,7 +982,7 @@
         // configure mojo
         project.addArtifact( jarArtifact );
         mojo.setOutputFileNameMapping( "@{artifactId}@.@{extension}@" );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
@@ -1026,7 +1026,7 @@
         project.addArtifact( ejbArtifact );
         project.addArtifact( ejbArtifactDup );
         mojo.setOutputFileNameMapping( "@{artifactId}@.@{extension}@" );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         mojo.execute();
 
         // validate operation
diff --git a/src/test/java/org/apache/maven/plugins/war/WarInPlaceMojoTest.java b/src/test/java/org/apache/maven/plugins/war/WarInPlaceMojoTest.java
index d93433c..8cf4557 100644
--- a/src/test/java/org/apache/maven/plugins/war/WarInPlaceMojoTest.java
+++ b/src/test/java/org/apache/maven/plugins/war/WarInPlaceMojoTest.java
@@ -70,7 +70,7 @@
 
         // configure mojo
         resources[0].setDirectory( webAppResource.getAbsolutePath() );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, null, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, null, project );
         setVariableValueToObject( mojo, "webResources", resources );
         mojo.execute();
 
diff --git a/src/test/java/org/apache/maven/plugins/war/WarMojoTest.java b/src/test/java/org/apache/maven/plugins/war/WarMojoTest.java
index 7a313ec..84a8ce8 100644
--- a/src/test/java/org/apache/maven/plugins/war/WarMojoTest.java
+++ b/src/test/java/org/apache/maven/plugins/war/WarMojoTest.java
@@ -81,7 +81,7 @@
         File xmlSource = createXMLConfigDir( testId, new String[] { "web.xml" } );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         mojo.setWebXml( new File( xmlSource, "web.xml" ) );
@@ -110,7 +110,7 @@
         File xmlSource = createXMLConfigDir( testId, new String[] { "web.xml" } );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         mojo.setWebXml( new File( xmlSource, "web.xml" ) );
@@ -142,7 +142,7 @@
         File xmlSource = createXMLConfigDir( testId, new String[] { "web.xml" } );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "projectHelper", projectHelper );
         setVariableValueToObject( mojo, "classifier", "test-classifier" );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
@@ -175,7 +175,7 @@
 
         warArtifact.setFile( new File( "error.war" ) );
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "projectHelper", projectHelper );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
@@ -211,7 +211,7 @@
 
         warArtifact.setFile( new File( "error.war" ) );
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "projectHelper", projectHelper );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
@@ -245,7 +245,7 @@
         createFile( configFile, "<config></config>" );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         mojo.setWebXml( new File( xmlSource, "web.xml" ) );
@@ -279,7 +279,7 @@
         createFile( configFile, "<config></config>" );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         mojo.setWebXml( new File( xmlSource, "web.xml" ) );
@@ -310,7 +310,7 @@
         File classesDir = createClassesDir( testId, true );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         mojo.setFailOnMissingWebXml( false );
@@ -341,7 +341,7 @@
         File classesDir = createClassesDir( testId, true );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         mojo.setFailOnMissingWebXml( true );
@@ -378,7 +378,7 @@
 
         project.setArtifact( warArtifact );
         project.setFile( warArtifact.getFile() );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
 
@@ -410,7 +410,7 @@
 
         project.setArtifact( warArtifact );
         project.setFile( warArtifact.getFile() );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
 
@@ -440,7 +440,7 @@
         File xmlSource = createXMLConfigDir( testId, new String[] { "web.xml" } );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         mojo.setWebXml( new File( xmlSource, "web.xml" ) );
@@ -469,7 +469,7 @@
         File xmlSource = createXMLConfigDir( testId, new String[] { "web.xml" } );
 
         project.setArtifact( warArtifact );
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         mojo.setWebXml( new File( xmlSource, "web.xml" ) );
diff --git a/src/test/java/org/apache/maven/plugins/war/WarOverlaysTest.java b/src/test/java/org/apache/maven/plugins/war/WarOverlaysTest.java
index aca9778..d944e6f 100644
--- a/src/test/java/org/apache/maven/plugins/war/WarOverlaysTest.java
+++ b/src/test/java/org/apache/maven/plugins/war/WarOverlaysTest.java
@@ -329,7 +329,7 @@
 
         Overlay over4 = new DefaultOverlay( overlay2 );
 
-        mojo.setOverlays( new LinkedList<Overlay>() );
+        mojo.setOverlays( new LinkedList<>() );
         mojo.addOverlay( over1 );
         mojo.addOverlay( over2 );
         mojo.addOverlay( over3 );
@@ -399,7 +399,7 @@
 
         Overlay over4 = new DefaultOverlay( overlay2 );
 
-        mojo.setOverlays( new LinkedList<Overlay>() );
+        mojo.setOverlays( new LinkedList<>() );
         mojo.addOverlay( over1 );
         mojo.addOverlay( over2 );
         mojo.addOverlay( over3 );
diff --git a/src/test/java/org/apache/maven/plugins/war/WarZipTest.java b/src/test/java/org/apache/maven/plugins/war/WarZipTest.java
index 88f6655..cc61d2e 100644
--- a/src/test/java/org/apache/maven/plugins/war/WarZipTest.java
+++ b/src/test/java/org/apache/maven/plugins/war/WarZipTest.java
@@ -80,7 +80,7 @@
         File xmlSource = createXMLConfigDir( testId, new String[] { "web.xml" } );
         project.setArtifact( warArtifact );
 
-        this.configureMojo( mojo, new LinkedList<String>(), classesDir, webAppSource, webAppDirectory, project );
+        this.configureMojo( mojo, new LinkedList<>(), classesDir, webAppSource, webAppDirectory, project );
         setVariableValueToObject( mojo, "outputDirectory", outputDir );
         setVariableValueToObject( mojo, "warName", warName );
         setVariableValueToObject( mojo, "workDirectory", new File( getTestDirectory(), "work" ) );
diff --git a/src/test/java/org/apache/maven/plugins/war/stub/MavenProject4CopyConstructor.java b/src/test/java/org/apache/maven/plugins/war/stub/MavenProject4CopyConstructor.java
index e9a58ab..831ddba 100644
--- a/src/test/java/org/apache/maven/plugins/war/stub/MavenProject4CopyConstructor.java
+++ b/src/test/java/org/apache/maven/plugins/war/stub/MavenProject4CopyConstructor.java
@@ -50,13 +50,13 @@
     {
         // the pom should be located in the isolated dummy root         
         super.setFile( new File( getBasedir(), "pom.xml" ) );
-        super.setDependencyArtifacts( new HashSet<Artifact>() );
-        super.setArtifacts( new HashSet<Artifact>() );
-        super.setExtensionArtifacts( new HashSet<Artifact>() );
-        super.setRemoteArtifactRepositories( new LinkedList<ArtifactRepository>() );
-        super.setPluginArtifactRepositories( new LinkedList<ArtifactRepository>() );
-        super.setCollectedProjects( new LinkedList<MavenProject>() );
-        super.setActiveProfiles( new LinkedList<Profile>() );
+        super.setDependencyArtifacts( new HashSet<>() );
+        super.setArtifacts( new HashSet<>() );
+        super.setExtensionArtifacts( new HashSet<>() );
+        super.setRemoteArtifactRepositories( new LinkedList<>() );
+        super.setPluginArtifactRepositories( new LinkedList<>() );
+        super.setCollectedProjects( new LinkedList<>() );
+        super.setActiveProfiles( new LinkedList<>() );
         super.setOriginalModel( null );
         super.setExecutionProject( this );
         super.setBuild( getBuild() );
diff --git a/src/test/java/org/apache/maven/plugins/war/util/WebappStructureTest.java b/src/test/java/org/apache/maven/plugins/war/util/WebappStructureTest.java
index 0e135de..3b2b185 100644
--- a/src/test/java/org/apache/maven/plugins/war/util/WebappStructureTest.java
+++ b/src/test/java/org/apache/maven/plugins/war/util/WebappStructureTest.java
@@ -34,13 +34,13 @@
 {
     public void testUnknownFileNotAvailable()
     {
-        final WebappStructure structure = new WebappStructure( new ArrayList<Dependency>() );
+        final WebappStructure structure = new WebappStructure( new ArrayList<>() );
         assertFalse( structure.isRegistered( "/foo/bar.txt" ) );
     }
 
     public void testRegisterSamePathTwice()
     {
-        final WebappStructure structure = new WebappStructure( new ArrayList<Dependency>() );
+        final WebappStructure structure = new WebappStructure( new ArrayList<>() );
         structure.registerFile( "overlay1", "WEB-INF/web.xml" );
         assertFalse( structure.registerFile( "currentBuild", "WEB-INF/web.xml" ) );
     }
@@ -48,7 +48,7 @@
     public void testRegisterForced()
     {
         final String path = "WEB-INF/web.xml";
-        final WebappStructure structure = new WebappStructure( new ArrayList<Dependency>() );
+        final WebappStructure structure = new WebappStructure( new ArrayList<>() );
         assertFalse("New file should return false",
                     structure.registerFileForced( "overlay1", path ));
         assertEquals( "overlay1", structure.getOwner( path ) );         
@@ -57,7 +57,7 @@
     public void testRegisterSamePathTwiceForced()
     {
         final String path = "WEB-INF/web.xml";
-        final WebappStructure structure = new WebappStructure( new ArrayList<Dependency>() );
+        final WebappStructure structure = new WebappStructure( new ArrayList<>() );
         structure.registerFile( "overlay1", path );
         assertEquals( "overlay1", structure.getOwner( path ) );
         assertTrue("owner replacement should have returned true",