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diff --git a/src/junit/com/jogamp/common/util/TestVersionSemantics.java b/src/junit/com/jogamp/common/util/TestVersionSemantics.java
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+/**
+ * Copyright 2014 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.common.util;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Set;
+
+import org.junit.Assert;
+import org.junit.FixMethodOrder;
+import org.junit.Test;
+import org.junit.runners.MethodSorters;
+import org.osjava.jardiff.DiffCriteria;
+import org.osjava.jardiff.SimpleDiffCriteria;
+import org.semver.Comparer;
+import org.semver.Delta;
+import org.semver.Dumper;
+import org.semver.Delta.Difference;
+
+import com.jogamp.common.GlueGenVersion;
+import com.jogamp.common.util.IOUtil;
+import com.jogamp.common.util.JarUtil;
+import com.jogamp.common.util.VersionNumberString;
+
+/**
+ * Compares a defined previous version with the current version.
+ * <p>
+ * {@link SimpleDiffCriteria} is chosen as it's {@link DiffCriteria},
+ * i.e. considering:
+ * <ul>
+ *   <li>not synthetic classes, methods and fields which are either
+ *   <ul>
+ *     <li>public</li>
+ *     <li>protected</li>
+ *   </ul></li>
+ * </ul>
+ * </p>
+ *
+ * @throws IllegalArgumentException
+ * @throws IOException
+ * @throws URISyntaxException
+ */
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestVersionSemantics {
+    public static final String jarFile = "gluegen-rt.jar";
+    public static final VersionNumberString preVersion = new VersionNumberString("2.1.5");
+    public static final Delta.CompatibilityType expectedCompatibilityType = Delta.CompatibilityType.BACKWARD_COMPATIBLE_USER;
+
+    @Test
+    public void testVersion01() throws IllegalArgumentException, IOException, URISyntaxException {
+
+        final GlueGenVersion glueGenVersion = GlueGenVersion.getInstance();
+        final VersionNumberString curVersion = new VersionNumberString(glueGenVersion.getImplementationVersion());
+
+        final File previousJar = new File("lib/v"+preVersion.getVersionString()+"/"+jarFile);
+
+        final ClassLoader rootCL = TestVersionSemantics.class.getClassLoader();
+
+        // Get containing JAR file "TestJarsInJar.jar" and add it to the TempJarCache
+        final URI currentJarURI = JarUtil.getJarSubURI(GlueGenVersion.class.getName(), rootCL);
+        final String currentJarLocS = IOUtil.decodeURIIfFilePath(currentJarURI);
+        final File currentJar = new File(currentJarLocS);
+
+        final DiffCriteria diffCriteria = new SimpleDiffCriteria();
+
+        final Set<String> includes = new HashSet<String>();
+
+        final Set<String> excludes = new HashSet<String>();
+        excludes.add("jogamp/**");
+
+        final Comparer comparer = new Comparer(diffCriteria, previousJar, currentJar, includes, excludes);
+        final Delta delta = comparer.diff();
+
+        //Validates that computed and provided compatibility type are compatible.
+        final Delta.CompatibilityType detectedCompatibilityType = delta.computeCompatibilityType();
+        final int comp = detectedCompatibilityType.compareTo(expectedCompatibilityType);
+        final boolean compOK = 0 >= comp;
+        final String compS;
+        if( 0 > comp ) {
+            compS = "< ";
+        } else if ( 0 == comp ) {
+            compS = "==";
+        } else {
+            compS = "> ";
+        }
+
+        System.err.println("GlueGen Semantic Versioning Test");
+        System.err.println("Previous version:   "+preVersion+" - "+previousJar.toString());
+        System.err.println("Current  version:   "+curVersion+" - "+currentJar.toString());
+        System.err.println("Compat. expected:   "+expectedCompatibilityType);
+        System.err.println("Compat. pre -> cur: "+detectedCompatibilityType);
+        System.err.println("Compat. result:     detected "+compS+" expected -> "+(compOK ? "OK" : "ERROR"));
+
+        final Set<Difference> diffs = delta.getDifferences();
+        System.err.println(diffs.size()+" differences!");
+        int diffI = 0;
+        for(final Iterator<Difference> iter = diffs.iterator(); iter.hasNext(); diffI++) {
+            final Difference diff = iter.next();
+            System.err.printf("Diff %4d: %-11s in class %s%n", diffI, diff.getClass().getSimpleName(), diff.getClassName());
+        }
+        Dumper.dump(delta);
+
+        Assert.assertTrue("Current version "+curVersion+" is "+compS+" of previous version "+preVersion, compOK);
+
+        /***
+        //Provide version number for previous and current Jar files.
+        final Version previous = Version.parse(...);
+        final Version current = Version.parse(...);
+
+        //Validates that current version number is valid based on semantic versioning principles.
+        final boolean compatible = delta.validate(previous, current);
+        */
+    }
+
+    public static void main(String args[]) throws IOException {
+        String tstname = TestVersionSemantics.class.getName();
+        org.junit.runner.JUnitCore.main(tstname);
+    }
+
+}