diff --git a/common.gradle b/common.gradle
index 05400cdaac..1f6aae34eb 100644
--- a/common.gradle
+++ b/common.gradle
@@ -26,7 +26,7 @@ java {
 
 tasks.withType(JavaCompile) { // compile-time options:
     //options.compilerArgs << '-Xlint:deprecation' // to show deprecation warnings
-    options.compilerArgs << '-Xlint:unchecked'
+    options.compilerArgs.addAll(['-Xlint:unchecked', '-Xlint:-options', '-Werror'])
     options.encoding = 'UTF-8'
     options.release = 8
 }
@@ -101,26 +101,26 @@ task javadocJar(type: Jar, dependsOn: javadoc, description: 'Creates a jar from
 }
 
 ext.pomConfig = {
-    name POM_NAME
-    description POM_DESCRIPTION
-    url POM_URL
-    inceptionYear POM_INCEPTION_YEAR
+    name = POM_NAME
+    description = POM_DESCRIPTION
+    url = POM_URL
+    inceptionYear = POM_INCEPTION_YEAR
     scm {
-        url POM_SCM_URL
-        connection POM_SCM_CONNECTION
-        developerConnection POM_SCM_DEVELOPER_CONNECTION
+        url = POM_SCM_URL
+        connection = POM_SCM_CONNECTION
+        developerConnection = POM_SCM_DEVELOPER_CONNECTION
     }
     licenses {
         license {
-            name POM_LICENSE_NAME
-            url POM_LICENSE_URL
-            distribution POM_LICENSE_DISTRIBUTION
+            name = POM_LICENSE_NAME
+            url = POM_LICENSE_URL
+            distribution = POM_LICENSE_DISTRIBUTION
         }
     }
     developers {
         developer {
-            name 'jMonkeyEngine Team'
-            id 'jMonkeyEngine'
+            name = 'jMonkeyEngine Team'
+            id = 'jMonkeyEngine'
         }
     }
 }
diff --git a/jme3-android/src/main/java/com/jme3/system/android/JmeAndroidSystem.java b/jme3-android/src/main/java/com/jme3/system/android/JmeAndroidSystem.java
index 0ba2d85e0c..1ba1941645 100644
--- a/jme3-android/src/main/java/com/jme3/system/android/JmeAndroidSystem.java
+++ b/jme3-android/src/main/java/com/jme3/system/android/JmeAndroidSystem.java
@@ -78,6 +78,7 @@ public void writeImageFile(OutputStream outStream, String format, ByteBuffer ima
 
 
     @Override
+    @SuppressWarnings("deprecation")
     public JmeContext newContext(AppSettings settings, Type contextType) {
         if (settings.getAudioRenderer() == null) {
             audioRendererType = null;
diff --git a/jme3-android/src/main/java/com/jme3/system/android/OGLESContext.java b/jme3-android/src/main/java/com/jme3/system/android/OGLESContext.java
index a553afa25a..e27558a575 100644
--- a/jme3-android/src/main/java/com/jme3/system/android/OGLESContext.java
+++ b/jme3-android/src/main/java/com/jme3/system/android/OGLESContext.java
@@ -711,8 +711,8 @@ public void requestDialog(
                     public void run() {
                         final FrameLayout layoutTextDialogInput = new FrameLayout(view.getContext());
                         final EditText editTextDialogInput = new EditText(view.getContext());
-                        editTextDialogInput.setWidth(LayoutParams.FILL_PARENT);
-                        editTextDialogInput.setHeight(LayoutParams.FILL_PARENT);
+                        editTextDialogInput.setWidth(LayoutParams.MATCH_PARENT);
+                        editTextDialogInput.setHeight(LayoutParams.MATCH_PARENT);
                         editTextDialogInput.setPadding(20, 20, 20, 20);
                         editTextDialogInput.setGravity(Gravity.FILL_HORIZONTAL);
                         //editTextDialogInput.setImeOptions(EditorInfo.IME_FLAG_NO_EXTRACT_UI);
diff --git a/jme3-core/src/main/java/com/jme3/effect/ParticleEmitter.java b/jme3-core/src/main/java/com/jme3/effect/ParticleEmitter.java
index 338894bbdf..9e6cf2ae29 100644
--- a/jme3-core/src/main/java/com/jme3/effect/ParticleEmitter.java
+++ b/jme3-core/src/main/java/com/jme3/effect/ParticleEmitter.java
@@ -187,6 +187,7 @@ public ParticleEmitter clone(boolean cloneMaterial) {
      *  The old clone() method that did not use the new Cloner utility.
      */
     @Override
+    @Deprecated
     public ParticleEmitter oldClone(boolean cloneMaterial) {
         ParticleEmitter clone = (ParticleEmitter) super.clone(cloneMaterial);
         clone.shape = shape.deepClone();
diff --git a/jme3-core/src/main/java/com/jme3/environment/EnvironmentCamera.java b/jme3-core/src/main/java/com/jme3/environment/EnvironmentCamera.java
index cd27573d02..10c42df8da 100644
--- a/jme3-core/src/main/java/com/jme3/environment/EnvironmentCamera.java
+++ b/jme3-core/src/main/java/com/jme3/environment/EnvironmentCamera.java
@@ -309,7 +309,7 @@ protected void initialize(Application app) {
             viewports[i] = createOffViewPort("EnvView" + i, cameras[i]);
             framebuffers[i] = createOffScreenFrameBuffer(size, viewports[i]);
             textures[i] = new Texture2D(size, size, colorFormat);
-            framebuffers[i].setColorTexture(textures[i]);
+            framebuffers[i].addColorTarget(FrameBuffer.FrameBufferTarget.newTarget(textures[i]));
         }
     }
 
@@ -416,7 +416,7 @@ protected FrameBuffer createOffScreenFrameBuffer(int mapSize, ViewPort offView)
     protected FrameBuffer createOffScreenFrameBuffer(int mapSize, ViewPort offView, Image.Format depthFormat) {
         // create offscreen framebuffer
         final FrameBuffer offBuffer = new FrameBuffer(mapSize, mapSize, 1);
-        offBuffer.setDepthBuffer(depthFormat);
+        offBuffer.setDepthTarget(FrameBuffer.FrameBufferTarget.newTarget(depthFormat));
         offView.setOutputFrameBuffer(offBuffer);
         return offBuffer;
     }
diff --git a/jme3-core/src/main/java/com/jme3/environment/EnvironmentProbeControl.java b/jme3-core/src/main/java/com/jme3/environment/EnvironmentProbeControl.java
index 82d45f32de..5250612686 100644
--- a/jme3-core/src/main/java/com/jme3/environment/EnvironmentProbeControl.java
+++ b/jme3-core/src/main/java/com/jme3/environment/EnvironmentProbeControl.java
@@ -186,6 +186,7 @@ public static void untagGlobal(Spatial s) {
     }
 
     @Override
+    @Deprecated
     public Control cloneForSpatial(Spatial spatial) {
         throw new UnsupportedOperationException();
     }
diff --git a/jme3-core/src/main/java/com/jme3/renderer/Caps.java b/jme3-core/src/main/java/com/jme3/renderer/Caps.java
index 5b111c811b..7fefc972e4 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/Caps.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/Caps.java
@@ -648,7 +648,7 @@ public static boolean supports(Collection<Caps> caps, FrameBuffer fb) {
             return false;
         }
 
-        RenderBuffer depthBuf = fb.getDepthBuffer();
+        RenderBuffer depthBuf = fb.getDepthTarget();
         if (depthBuf != null) {
             Format depthFmt = depthBuf.getFormat();
             if (!depthFmt.isDepthFormat()) {
@@ -675,8 +675,8 @@ public static boolean supports(Collection<Caps> caps, FrameBuffer fb) {
                 }
             }
         }
-        for (int i = 0; i < fb.getNumColorBuffers(); i++) {
-            if (!supportsColorBuffer(caps, fb.getColorBuffer(i))) {
+        for (int i = 0; i < fb.getNumColorTargets(); i++) {
+            if (!supportsColorBuffer(caps, fb.getColorTarget(i))) {
                 return false;
             }
         }
diff --git a/jme3-core/src/main/java/com/jme3/renderer/RenderContext.java b/jme3-core/src/main/java/com/jme3/renderer/RenderContext.java
index ae51d09bdd..15a202a6a5 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/RenderContext.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/RenderContext.java
@@ -35,16 +35,21 @@
 import com.jme3.math.ColorRGBA;
 import com.jme3.scene.VertexBuffer;
 import com.jme3.shader.Shader;
+import com.jme3.shader.bufferobject.BufferObject;
 import com.jme3.texture.FrameBuffer;
 import com.jme3.texture.Image;
 import java.lang.ref.WeakReference;
-import com.jme3.shader.bufferobject.BufferObject;
 
 /**
  * Represents the current state of the graphics library. This class is used
  * internally to reduce state changes. NOTE: This class is specific to OpenGL.
  */
 public class RenderContext {
+    @SuppressWarnings("unchecked")
+    private static <T> WeakReference<T>[] newWeakReferenceArray(int size) {
+        return (WeakReference<T>[]) new WeakReference<?>[size];
+    }
+
     /**
      * Number of texture units that JME supports.
      */
@@ -264,8 +269,8 @@ public class RenderContext {
      *
      * @see Renderer#setTexture(int, com.jme3.texture.Texture)
      */
-    public final WeakReference<Image> boundTextures[]
-            = new WeakReference[maxTextureUnits];
+    public final WeakReference<Image>[] boundTextures
+            = newWeakReferenceArray(maxTextureUnits);
 
 
     /**
@@ -274,7 +279,7 @@ public class RenderContext {
      * @see Renderer#setUniformBufferObject(int, com.jme3.shader.BufferObject)
      * @see Renderer#setShaderStorageBufferObject(int, com.jme3.shader.BufferObject)
      */
-    public final WeakReference<BufferObject>[] boundBO = new WeakReference[maxBufferObjectUnits];
+    public final WeakReference<BufferObject>[] boundBO = newWeakReferenceArray(maxBufferObjectUnits);
 
     /**
      * IDList for texture units.
@@ -331,7 +336,7 @@ public class RenderContext {
      * Vertex attribs currently bound and enabled. If a slot is null, then
      * it is disabled.
      */
-    public final WeakReference<VertexBuffer>[] boundAttribs = new WeakReference[16];
+    public final WeakReference<VertexBuffer>[] boundAttribs = newWeakReferenceArray(16);
 
     /**
      * IDList for vertex attributes.
diff --git a/jme3-core/src/main/java/com/jme3/renderer/RenderManager.java b/jme3-core/src/main/java/com/jme3/renderer/RenderManager.java
index a554bcfa47..c0fc96d4cf 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/RenderManager.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/RenderManager.java
@@ -31,13 +31,9 @@
  */
 package com.jme3.renderer;
 
-import com.jme3.renderer.pipeline.ForwardPipeline;
-import com.jme3.renderer.pipeline.DefaultPipelineContext;
-import com.jme3.renderer.pipeline.RenderPipeline;
-import com.jme3.renderer.pipeline.PipelineContext;
-import com.jme3.light.DefaultLightFilter;
-import com.jme3.light.LightFilter;
-import com.jme3.light.LightList;
+import com.jme3.light.DefaultLightFilter;
+import com.jme3.light.LightFilter;
+import com.jme3.light.LightList;
 import com.jme3.material.MatParamOverride;
 import com.jme3.material.Material;
 import com.jme3.material.MaterialDef;
@@ -46,11 +42,15 @@
 import com.jme3.material.TechniqueDef;
 import com.jme3.math.FastMath;
 import com.jme3.math.Matrix4f;
-import com.jme3.post.SceneProcessor;
-import com.jme3.profile.AppProfiler;
-import com.jme3.profile.AppStep;
-import com.jme3.profile.VpStep;
-import com.jme3.renderer.queue.GeometryList;
+import com.jme3.post.SceneProcessor;
+import com.jme3.profile.AppProfiler;
+import com.jme3.profile.AppStep;
+import com.jme3.profile.VpStep;
+import com.jme3.renderer.pipeline.DefaultPipelineContext;
+import com.jme3.renderer.pipeline.ForwardPipeline;
+import com.jme3.renderer.pipeline.PipelineContext;
+import com.jme3.renderer.pipeline.RenderPipeline;
+import com.jme3.renderer.queue.GeometryList;
 import com.jme3.renderer.queue.RenderQueue;
 import com.jme3.renderer.queue.RenderQueue.Bucket;
 import com.jme3.renderer.queue.RenderQueue.ShadowMode;
@@ -111,7 +111,7 @@ public class RenderManager {
     private final HashMap<Class<? extends PipelineContext>, PipelineContext> contexts = new HashMap<>();
     private final LinkedList<PipelineContext> usedContexts = new LinkedList<>();
     private final LinkedList<RenderPipeline<? extends PipelineContext>> usedPipelines = new LinkedList<>();
-    private RenderPipeline<? extends PipelineContext> defaultPipeline = new ForwardPipeline();
+    private RenderPipeline<? extends PipelineContext> defaultPipeline = new ForwardPipeline();
     private Camera prevCam = null;
     private Material forcedMaterial = null;
     private String forcedTechnique = null;
@@ -1382,19 +1382,22 @@ public void applyViewPort(ViewPort vp) {
      * @param vp View port to render
      * @param tpf Time per frame value
      */
-    public void renderViewPort(ViewPort vp, float tpf) {
-        if (!vp.isEnabled()) {
-            return;
-        }
-        RenderPipeline pipeline = vp.getPipeline();
-        if (pipeline == null) {
-            pipeline = defaultPipeline;
-        }
-
-        PipelineContext context = pipeline.fetchPipelineContext(this);
-        if (context == null) {
-            throw new NullPointerException("Failed to fetch pipeline context.");
-        }
+    public void renderViewPort(ViewPort vp, float tpf) {
+        if (!vp.isEnabled()) {
+            return;
+        }
+        RenderPipeline<? extends PipelineContext> pipeline = vp.getPipeline();
+        if (pipeline == null) {
+            pipeline = defaultPipeline;
+        }
+        renderViewPort(vp, tpf, pipeline);
+    }
+
+    private <T extends PipelineContext> void renderViewPort(ViewPort vp, float tpf, RenderPipeline<T> pipeline) {
+        T context = pipeline.fetchPipelineContext(this);
+        if (context == null) {
+            throw new NullPointerException("Failed to fetch pipeline context.");
+        }
         if (!context.startViewPortRender(this, vp)) {
             usedContexts.add(context);
         }
diff --git a/jme3-core/src/main/java/com/jme3/renderer/ViewPort.java b/jme3-core/src/main/java/com/jme3/renderer/ViewPort.java
index f256405276..b1fcfed1b5 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/ViewPort.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/ViewPort.java
@@ -31,9 +31,10 @@
  */
 package com.jme3.renderer;
 
-import com.jme3.renderer.pipeline.RenderPipeline;
 import com.jme3.math.ColorRGBA;
 import com.jme3.post.SceneProcessor;
+import com.jme3.renderer.pipeline.PipelineContext;
+import com.jme3.renderer.pipeline.RenderPipeline;
 import com.jme3.renderer.queue.RenderQueue;
 import com.jme3.scene.Geometry;
 import com.jme3.scene.Spatial;
@@ -88,7 +89,7 @@ public class ViewPort {
     /**
      * Dedicated pipeline.
      */
-    protected RenderPipeline pipeline;
+    protected RenderPipeline<? extends PipelineContext> pipeline;
     /**
      * FrameBuffer for output.
      */
@@ -440,7 +441,7 @@ public boolean isEnabled() {
      * 
      * @param pipeline pipeline, or null to use render manager's pipeline
      */
-    public void setPipeline(RenderPipeline pipeline) {
+    public void setPipeline(RenderPipeline<? extends PipelineContext> pipeline) {
         this.pipeline = pipeline;
     }
     
@@ -449,7 +450,7 @@ public void setPipeline(RenderPipeline pipeline) {
      * 
      * @return 
      */
-    public RenderPipeline getPipeline() {
+    public RenderPipeline<? extends PipelineContext> getPipeline() {
         return pipeline;
     }
 
diff --git a/jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java b/jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java
index b7d11f9ba6..4e4d684fa3 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/opengl/GLRenderer.java
@@ -1956,6 +1956,7 @@ public void copyFrameBuffer(FrameBuffer src, FrameBuffer dst) {
     }
 
     @Override
+    @Deprecated
     public void copyFrameBuffer(FrameBuffer src, FrameBuffer dst, boolean copyDepth) {
         copyFrameBuffer(src, dst, true, copyDepth);
     }
@@ -2226,7 +2227,7 @@ private void toggleFramebufferSrgb(FrameBuffer fb) {
     }
 
     public void updateFrameBuffer(FrameBuffer fb) {
-        if (fb.getNumColorBuffers() == 0 && fb.getDepthBuffer() == null) {
+        if (fb.getNumColorTargets() == 0 && fb.getDepthTarget() == null) {
             throw new IllegalArgumentException("The framebuffer: " + fb
                     + "\nDoesn't have any color/depth buffers");
         }
@@ -2242,13 +2243,13 @@ public void updateFrameBuffer(FrameBuffer fb) {
 
         bindFrameBuffer(fb);
 
-        FrameBuffer.RenderBuffer depthBuf = fb.getDepthBuffer();
+        FrameBuffer.RenderBuffer depthBuf = fb.getDepthTarget();
         if (depthBuf != null) {
             updateFrameBufferAttachment(fb, depthBuf);
         }
 
-        for (int i = 0; i < fb.getNumColorBuffers(); i++) {
-            FrameBuffer.RenderBuffer colorBuf = fb.getColorBuffer(i);
+        for (int i = 0; i < fb.getNumColorTargets(); i++) {
+            FrameBuffer.RenderBuffer colorBuf = fb.getColorTarget(i);
             updateFrameBufferAttachment(fb, colorBuf);
         }
 
@@ -2309,13 +2310,13 @@ public void setReadDrawBuffers(FrameBuffer fb) {
 
         if (fb != null) {
           
-            if (fb.getNumColorBuffers() == 0) {
+            if (fb.getNumColorTargets() == 0) {
                 // make sure to select NONE as draw buf
                 // no color buffer attached.                
                 gl2.glDrawBuffer(GL.GL_NONE);             
                 gl2.glReadBuffer(GL.GL_NONE);                 
             } else {
-                if (fb.getNumColorBuffers() > limits.get(Limits.FrameBufferAttachments)) {
+                if (fb.getNumColorTargets() > limits.get(Limits.FrameBufferAttachments)) {
                     throw new RendererException("Framebuffer has more color "
                             + "attachments than are supported"
                             + " by the video hardware!");
@@ -2325,21 +2326,21 @@ public void setReadDrawBuffers(FrameBuffer fb) {
                         throw new RendererException("Multiple render targets "
                                 + " are not supported by the video hardware");
                     }
-                    if (fb.getNumColorBuffers() > limits.get(Limits.FrameBufferMrtAttachments)) {
+                    if (fb.getNumColorTargets() > limits.get(Limits.FrameBufferMrtAttachments)) {
                         throw new RendererException("Framebuffer has more"
                                 + " multi targets than are supported"
                                 + " by the video hardware!");
                     }
 
                     intBuf16.clear();
-                    for (int i = 0; i < fb.getNumColorBuffers(); i++) {
+                    for (int i = 0; i < fb.getNumColorTargets(); i++) {
                         intBuf16.put(GLFbo.GL_COLOR_ATTACHMENT0_EXT + i);
                     }
 
                     intBuf16.flip();
                     glext.glDrawBuffers(intBuf16);
                 } else {
-                    RenderBuffer rb = fb.getColorBuffer(fb.getTargetIndex());
+                    RenderBuffer rb = fb.getColorTarget(fb.getTargetIndex());
                     // select this draw buffer
                     gl2.glDrawBuffer(GLFbo.GL_COLOR_ATTACHMENT0_EXT + rb.getSlot());
                     // select this read buffer
@@ -2373,8 +2374,8 @@ public void setFrameBuffer(FrameBuffer fb) {
         if (boundFB != null && (boundFB.getMipMapsGenerationHint() != null
                 ? boundFB.getMipMapsGenerationHint()
                 : generateMipmapsForFramebuffers)) {
-            for (int i = 0; i < boundFB.getNumColorBuffers(); i++) {
-                RenderBuffer rb = boundFB.getColorBuffer(i);
+            for (int i = 0; i < boundFB.getNumColorTargets(); i++) {
+                RenderBuffer rb = boundFB.getColorTarget(i);
                 Texture tex = rb.getTexture();
                 if (tex != null && tex.getMinFilter().usesMipMapLevels()
                         && isMipmapGenerationSupported(tex.getImage().getFormat(),
@@ -2429,7 +2430,7 @@ public void readFrameBuffer(FrameBuffer fb, ByteBuffer byteBuf) {
 
     private void readFrameBufferWithGLFormat(FrameBuffer fb, ByteBuffer byteBuf, int glFormat, int dataType) {
         if (fb != null) {
-            RenderBuffer rb = fb.getColorBuffer();
+            RenderBuffer rb = fb.getColorTarget();
             if (rb == null) {
                 throw new IllegalArgumentException("Specified framebuffer"
                         + " does not have a colorbuffer");
@@ -2464,11 +2465,11 @@ public void deleteFrameBuffer(FrameBuffer fb) {
                 context.boundFBO = 0;
             }
 
-            if (fb.getDepthBuffer() != null) {
-                deleteRenderBuffer(fb, fb.getDepthBuffer());
+            if (fb.getDepthTarget() != null) {
+                deleteRenderBuffer(fb, fb.getDepthTarget());
             }
-            if (fb.getColorBuffer() != null) {
-                deleteRenderBuffer(fb, fb.getColorBuffer());
+            if (fb.getColorTarget() != null) {
+                deleteRenderBuffer(fb, fb.getColorTarget());
             }
 
             intBuf1.put(0, fb.getId());
diff --git a/jme3-core/src/main/java/com/jme3/renderer/pipeline/ForwardPipeline.java b/jme3-core/src/main/java/com/jme3/renderer/pipeline/ForwardPipeline.java
index 2f02ab3e82..96850bd182 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/pipeline/ForwardPipeline.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/pipeline/ForwardPipeline.java
@@ -46,7 +46,7 @@
  * 
  * @author codex
  */
-public class ForwardPipeline implements RenderPipeline {
+public class ForwardPipeline implements RenderPipeline<PipelineContext> {
 
     private boolean rendered = false;
     
diff --git a/jme3-core/src/main/java/com/jme3/renderer/pipeline/NullPipeline.java b/jme3-core/src/main/java/com/jme3/renderer/pipeline/NullPipeline.java
index b104e5bd5d..bee0e4a56a 100644
--- a/jme3-core/src/main/java/com/jme3/renderer/pipeline/NullPipeline.java
+++ b/jme3-core/src/main/java/com/jme3/renderer/pipeline/NullPipeline.java
@@ -12,7 +12,7 @@
  * 
  * @author codex
  */
-public class NullPipeline implements RenderPipeline {
+public class NullPipeline implements RenderPipeline<PipelineContext> {
     
     private boolean rendered = false;
     
diff --git a/jme3-core/src/main/java/com/jme3/scene/debug/SkeletonDebugger.java b/jme3-core/src/main/java/com/jme3/scene/debug/SkeletonDebugger.java
index f8f450ab47..1b5e912a78 100644
--- a/jme3-core/src/main/java/com/jme3/scene/debug/SkeletonDebugger.java
+++ b/jme3-core/src/main/java/com/jme3/scene/debug/SkeletonDebugger.java
@@ -159,4 +159,4 @@ private <T extends Mesh> T getMesh(String suffix) {
 
         return null;
     }
-}
\ No newline at end of file
+}
diff --git a/jme3-core/src/main/java/com/jme3/scene/debug/SkeletonInterBoneWire.java b/jme3-core/src/main/java/com/jme3/scene/debug/SkeletonInterBoneWire.java
index 6db686bed8..5c4ea5b11a 100644
--- a/jme3-core/src/main/java/com/jme3/scene/debug/SkeletonInterBoneWire.java
+++ b/jme3-core/src/main/java/com/jme3/scene/debug/SkeletonInterBoneWire.java
@@ -55,7 +55,7 @@
  * 
  * @author Marcin Roguski (Kaelthas)
  */
-public class SkeletonInterBoneWire extends Mesh {
+public class SkeletonInterBoneWire extends Mesh {
     private static final int    POINT_AMOUNT = 10;
     /** The amount of connections between bones. */
     private int                 connectionsAmount;
diff --git a/jme3-core/src/main/java/com/jme3/system/NullRenderer.java b/jme3-core/src/main/java/com/jme3/system/NullRenderer.java
index f220c50b98..162f347206 100644
--- a/jme3-core/src/main/java/com/jme3/system/NullRenderer.java
+++ b/jme3-core/src/main/java/com/jme3/system/NullRenderer.java
@@ -145,6 +145,7 @@ public void copyFrameBuffer(FrameBuffer src, FrameBuffer dst) {
     }
 
     @Override
+    @Deprecated
     public void copyFrameBuffer(FrameBuffer src, FrameBuffer dst, boolean copyDepth) {
     }
 
diff --git a/jme3-core/src/main/java/com/jme3/texture/Texture2D.java b/jme3-core/src/main/java/com/jme3/texture/Texture2D.java
index ab633aed49..7bdc55bec8 100644
--- a/jme3-core/src/main/java/com/jme3/texture/Texture2D.java
+++ b/jme3-core/src/main/java/com/jme3/texture/Texture2D.java
@@ -97,6 +97,7 @@ public Texture2D(int width, int height, int numSamples, Image.Format format){
     }
 
     @Override
+    @Deprecated
     public Texture createSimpleClone() {
         Texture2D clone = new Texture2D();
         createSimpleClone(clone);
@@ -104,6 +105,7 @@ public Texture createSimpleClone() {
     }
 
     @Override
+    @Deprecated
     public Texture createSimpleClone(Texture rVal) {
         rVal.setWrap(WrapAxis.S, wrapS);
         rVal.setWrap(WrapAxis.T, wrapT);
diff --git a/jme3-core/src/main/java/com/jme3/texture/Texture3D.java b/jme3-core/src/main/java/com/jme3/texture/Texture3D.java
index bb12a858dd..6052ea35ff 100644
--- a/jme3-core/src/main/java/com/jme3/texture/Texture3D.java
+++ b/jme3-core/src/main/java/com/jme3/texture/Texture3D.java
@@ -100,6 +100,7 @@ public Texture3D(int width, int height, int depth, int numSamples, Image.Format
     }
 
     @Override
+    @Deprecated
     public Texture createSimpleClone() {
         Texture3D clone = new Texture3D();
         createSimpleClone(clone);
@@ -107,6 +108,7 @@ public Texture createSimpleClone() {
     }
 
     @Override
+    @Deprecated
     public Texture createSimpleClone(Texture rVal) {
         rVal.setWrap(WrapAxis.S, wrapS);
         rVal.setWrap(WrapAxis.T, wrapT);
@@ -226,4 +228,4 @@ public void read(JmeImporter importer) throws IOException {
         wrapT = capsule.readEnum("wrapT", WrapMode.class, WrapMode.EdgeClamp);
         wrapR = capsule.readEnum("wrapR", WrapMode.class, WrapMode.EdgeClamp);
     }
-}
\ No newline at end of file
+}
diff --git a/jme3-core/src/main/java/com/jme3/texture/TextureArray.java b/jme3-core/src/main/java/com/jme3/texture/TextureArray.java
index e839399c33..644e094f70 100644
--- a/jme3-core/src/main/java/com/jme3/texture/TextureArray.java
+++ b/jme3-core/src/main/java/com/jme3/texture/TextureArray.java
@@ -99,6 +99,7 @@ public TextureArray(List<Image> images) {
     }
 
     @Override
+    @Deprecated
     public Texture createSimpleClone() {
         TextureArray clone = new TextureArray();
         createSimpleClone(clone);
@@ -106,6 +107,7 @@ public Texture createSimpleClone() {
     }
 
     @Override
+    @Deprecated
     public Texture createSimpleClone(Texture rVal) {
         rVal.setWrap(WrapAxis.S, wrapS);
         rVal.setWrap(WrapAxis.T, wrapT);
diff --git a/jme3-core/src/main/java/com/jme3/texture/TextureCubeMap.java b/jme3-core/src/main/java/com/jme3/texture/TextureCubeMap.java
index 40e6c037c3..e867e49d5e 100644
--- a/jme3-core/src/main/java/com/jme3/texture/TextureCubeMap.java
+++ b/jme3-core/src/main/java/com/jme3/texture/TextureCubeMap.java
@@ -94,11 +94,13 @@ private static Image createEmptyLayeredImage(int width, int height,
     }
 
     @Override
+    @Deprecated
     public Texture createSimpleClone() {
         return createSimpleClone(new TextureCubeMap());
     }
 
     @Override
+    @Deprecated
     public Texture createSimpleClone(Texture rVal) {
         rVal.setWrap(WrapAxis.S, wrapS);
         rVal.setWrap(WrapAxis.T, wrapT);
diff --git a/jme3-core/src/main/java/com/jme3/util/IntMap.java b/jme3-core/src/main/java/com/jme3/util/IntMap.java
index 198b380dd8..49e38fd41e 100644
--- a/jme3-core/src/main/java/com/jme3/util/IntMap.java
+++ b/jme3-core/src/main/java/com/jme3/util/IntMap.java
@@ -47,7 +47,7 @@
  */
 public final class IntMap<T> implements Iterable<Entry<T>>, Cloneable, JmeCloneable {
 
-    private Entry[] table;
+    private Entry<T>[] table;
     private final float loadFactor;
     private int size, mask, capacity, threshold;
 
@@ -75,7 +75,7 @@ public IntMap(int initialCapacity, float loadFactor) {
         }
         this.loadFactor = loadFactor;
         this.threshold = (int) (capacity * loadFactor);
-        this.table = new Entry[capacity];
+        this.table = newTable(capacity);
         this.mask = capacity - 1;
     }
 
@@ -84,7 +84,7 @@ public IntMap(int initialCapacity, float loadFactor) {
     public IntMap<T> clone(){
         try {
             IntMap<T> clone = (IntMap<T>) super.clone();
-            Entry[] newTable = new Entry[table.length];
+            Entry<T>[] newTable = newTable(table.length);
             for (int i = table.length - 1; i >= 0; i--){
                 if (table[i] != null)
                     newTable[i] = table[i].clone();
@@ -117,9 +117,9 @@ public void cloneFields(Cloner cloner, Object original) {
     }
 
     public boolean containsValue(Object value) {
-        Entry[] table = this.table;
+        Entry<T>[] table = this.table;
         for (int i = table.length; i-- > 0;){
-            for (Entry e = table[i]; e != null; e = e.next){
+            for (Entry<T> e = table[i]; e != null; e = e.next){
                 if (e.value.equals(value)){
                     return true;
                 }
@@ -130,7 +130,7 @@ public boolean containsValue(Object value) {
 
     public boolean containsKey(int key) {
         int index = ((int) key) & mask;
-        for (Entry e = table[index]; e != null; e = e.next){
+        for (Entry<T> e = table[index]; e != null; e = e.next){
             if (e.key == key){
                 return true;
             }
@@ -138,42 +138,40 @@ public boolean containsKey(int key) {
         return false;
     }
 
-    @SuppressWarnings("unchecked")
     public T get(int key) {
         int index = key & mask;
-        for (Entry e = table[index]; e != null; e = e.next){
+        for (Entry<T> e = table[index]; e != null; e = e.next){
             if (e.key == key){
-                return (T) e.value;
+                return e.value;
             }
         }
         return null;
     }
 
-    @SuppressWarnings("unchecked")
     public T put(int key, T value) {
         int index = key & mask;
         // Check if key already exists.
-        for (Entry e = table[index]; e != null; e = e.next){
+        for (Entry<T> e = table[index]; e != null; e = e.next){
             if (e.key != key){
                 continue;
             }
-            Object oldValue = e.value;
+            T oldValue = e.value;
             e.value = value;
-            return (T) oldValue;
+            return oldValue;
         }
-        table[index] = new Entry(key, value, table[index]);
+        table[index] = new Entry<>(key, value, table[index]);
         if (size++ >= threshold){
             // Rehash.
             int newCapacity = 2 * capacity;
-            Entry[] newTable = new Entry[newCapacity];
-            Entry[] src = table;
+            Entry<T>[] newTable = newTable(newCapacity);
+            Entry<T>[] src = table;
             int bucketMask = newCapacity - 1;
             for (int j = 0; j < src.length; j++){
-                Entry e = src[j];
+                Entry<T> e = src[j];
                 if (e != null){
                     src[j] = null;
                     do{
-                        Entry next = e.next;
+                        Entry<T> next = e.next;
                         index = e.key & bucketMask;
                         e.next = newTable[index];
                         newTable[index] = e;
@@ -189,13 +187,12 @@ public T put(int key, T value) {
         return null;
     }
 
-    @SuppressWarnings("unchecked")
     public T remove(int key) {
         int index = key & mask;
-        Entry prev = table[index];
-        Entry e = prev;
+        Entry<T> prev = table[index];
+        Entry<T> e = prev;
         while (e != null){
-            Entry next = e.next;
+            Entry<T> next = e.next;
             if (e.key == key){
                 size--;
                 if (prev == e){
@@ -203,7 +200,7 @@ public T remove(int key) {
                 }else{
                     prev.next = next;
                 }
-                return (T) e.value;
+                return e.value;
             }
             prev = e;
             e = next;
@@ -216,7 +213,7 @@ public int size() {
     }
 
     public void clear() {
-        Entry[] table = this.table;
+        Entry<T>[] table = this.table;
         for (int index = table.length; --index >= 0;) {
             table[index] = null;
         }
@@ -235,7 +232,7 @@ final class IntMapIterator implements Iterator<Entry<T>> {
         /**
          * Current entry.
          */
-        private Entry cur;
+        private Entry<T> cur;
 
         /**
          * Entry in the table
@@ -262,13 +259,12 @@ public boolean hasNext() {
         }
 
         @Override
-        @SuppressWarnings("unchecked")
-        public Entry next() {
+        public Entry<T> next() {
             if (el >= size)
                 throw new NoSuchElementException("No more elements!");
 
             if (cur != null) {
-                Entry e = cur;
+                Entry<T> e = cur;
                 cur = cur.next;
                 el++;
                 return e;
@@ -286,7 +282,7 @@ public Entry next() {
                 cur = table[++idx];
             } while (cur == null);
 
-            Entry e = cur;
+            Entry<T> e = cur;
             cur = cur.next;
             el ++;
 
@@ -298,13 +294,18 @@ public void remove() {
         }
     }
 
+    @SuppressWarnings("unchecked")
+    private static <T> Entry<T>[] newTable(int size) {
+        return (Entry<T>[]) new Entry<?>[size];
+    }
+
     public static final class Entry<T> implements Cloneable, JmeCloneable {
 
         final int key;
         T value;
-        Entry next;
+        Entry<T> next;
 
-        Entry(int k, T v, Entry n) {
+        Entry(int k, T v, Entry<T> n) {
             key = k;
             value = v;
             next = n;
diff --git a/jme3-core/src/main/java/com/jme3/util/NativeObject.java b/jme3-core/src/main/java/com/jme3/util/NativeObject.java
index 44ec3ad947..c1c49e2c48 100644
--- a/jme3-core/src/main/java/com/jme3/util/NativeObject.java
+++ b/jme3-core/src/main/java/com/jme3/util/NativeObject.java
@@ -167,6 +167,7 @@ protected NativeObject clone() {
             obj.objectManager = null;
             obj.id = INVALID_ID;
             obj.updateNeeded = true;
+            obj.weakRef = null;
             return obj;
         } catch (CloneNotSupportedException ex) {
             throw new AssertionError();
@@ -244,6 +245,7 @@ public void dispose() {
      * @param <T> the type
      * @return a weak reference (possibly a pre-existing one)
      */
+    @SuppressWarnings("unchecked")
     public <T> WeakReference<T> getWeakRef() {
         if (weakRef == null) {
             weakRef = new WeakReference<>(this);
diff --git a/jme3-core/src/main/java/com/jme3/util/struct/StructStd140BufferObject.java b/jme3-core/src/main/java/com/jme3/util/struct/StructStd140BufferObject.java
index 4529239865..0aafd66848 100644
--- a/jme3-core/src/main/java/com/jme3/util/struct/StructStd140BufferObject.java
+++ b/jme3-core/src/main/java/com/jme3/util/struct/StructStd140BufferObject.java
@@ -120,7 +120,7 @@ public void read(JmeImporter im) throws IOException {
         try {
             String rootClass = ic.readString("rootClass", null);
             if (rootClass == null) throw new Exception("rootClass is undefined");
-            Class<? extends Struct> rootStructClass = (Class<? extends Struct>) Class.forName(rootClass);
+            Class<? extends Struct> rootStructClass = Class.forName(rootClass).asSubclass(Struct.class);
             Struct rootStruct = rootStructClass.newInstance();
             loadLayout(rootStruct);
         } catch (Exception e) {
diff --git a/jme3-core/src/test/java/com/jme3/material/plugins/J3MLoaderTest.java b/jme3-core/src/test/java/com/jme3/material/plugins/J3MLoaderTest.java
index c1c330d226..076feb199c 100644
--- a/jme3-core/src/test/java/com/jme3/material/plugins/J3MLoaderTest.java
+++ b/jme3-core/src/test/java/com/jme3/material/plugins/J3MLoaderTest.java
@@ -21,8 +21,8 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.Mockito.when;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
 /**
  * @author Daniel Johansson
diff --git a/jme3-desktop/src/main/java/com/jme3/system/AWTComponentRenderer.java b/jme3-desktop/src/main/java/com/jme3/system/AWTComponentRenderer.java
index bfb0e85e31..93c03e13d5 100644
--- a/jme3-desktop/src/main/java/com/jme3/system/AWTComponentRenderer.java
+++ b/jme3-desktop/src/main/java/com/jme3/system/AWTComponentRenderer.java
@@ -186,8 +186,8 @@ public AWTComponentRenderer(Component destination, TransferMode transferMode, Fr
       this.frameBuffer = frameBuffer;
     } else {
       this.frameBuffer = new FrameBuffer(width, height, 1);
-      this.frameBuffer.setDepthBuffer(Image.Format.Depth);
-      this.frameBuffer.setColorBuffer(Image.Format.RGBA8);
+      this.frameBuffer.setDepthTarget(FrameBuffer.FrameBufferTarget.newTarget(Image.Format.Depth));
+      this.frameBuffer.addColorTarget(FrameBuffer.FrameBufferTarget.newTarget(Image.Format.RGBA8));
       this.frameBuffer.setSrgb(true);
     }
 
@@ -388,4 +388,4 @@ public void dispose() {
     frameState.compareAndSet(DISPOSING_STATE, DISPOSED_STATE);
     imageState.compareAndSet(DISPOSING_STATE, DISPOSED_STATE);
   }
-}
\ No newline at end of file
+}
diff --git a/jme3-desktop/src/main/java/com/jme3/system/AWTFrameProcessor.java b/jme3-desktop/src/main/java/com/jme3/system/AWTFrameProcessor.java
index 111e856973..541dad9e3d 100644
--- a/jme3-desktop/src/main/java/com/jme3/system/AWTFrameProcessor.java
+++ b/jme3-desktop/src/main/java/com/jme3/system/AWTFrameProcessor.java
@@ -620,8 +620,8 @@ protected void reshapeCurrentViewPort(int width, int height) {
         if (found) {
 
             FrameBuffer frameBuffer = new FrameBuffer(width, height, 1);
-            frameBuffer.setDepthBuffer(Image.Format.Depth);
-            frameBuffer.setColorBuffer(Image.Format.RGBA8);
+            frameBuffer.setDepthTarget(FrameBuffer.FrameBufferTarget.newTarget(Image.Format.Depth));
+            frameBuffer.addColorTarget(FrameBuffer.FrameBufferTarget.newTarget(Image.Format.RGBA8));
             frameBuffer.setSrgb(true);
 
             viewPort.setOutputFrameBuffer(frameBuffer);
diff --git a/jme3-networking/src/main/java/com/jme3/network/message/ClientRegistrationMessage.java b/jme3-networking/src/main/java/com/jme3/network/message/ClientRegistrationMessage.java
index 50272e9deb..dcad1c5b8d 100644
--- a/jme3-networking/src/main/java/com/jme3/network/message/ClientRegistrationMessage.java
+++ b/jme3-networking/src/main/java/com/jme3/network/message/ClientRegistrationMessage.java
@@ -93,7 +93,7 @@ public String toString() {
     public static class ClientRegistrationSerializer extends Serializer {
      
         @Override
-        public ClientRegistrationMessage readObject( ByteBuffer data, Class c ) throws IOException {
+        public <T> T readObject(ByteBuffer data, Class<T> c) throws IOException {
     
             // Read the null/non-null marker
             if (data.get() == 0x0)
@@ -105,7 +105,7 @@ public ClientRegistrationMessage readObject( ByteBuffer data, Class c ) throws I
             msg.id = data.getLong();
             msg.version = data.getInt();
             
-            return msg;
+            return c.cast(msg);
         }
 
         @Override
diff --git a/jme3-networking/src/main/java/com/jme3/network/message/DisconnectMessage.java b/jme3-networking/src/main/java/com/jme3/network/message/DisconnectMessage.java
index 29f732768c..07695a21ea 100644
--- a/jme3-networking/src/main/java/com/jme3/network/message/DisconnectMessage.java
+++ b/jme3-networking/src/main/java/com/jme3/network/message/DisconnectMessage.java
@@ -85,7 +85,7 @@ public String toString() {
     public static class DisconnectSerializer extends Serializer {
      
         @Override
-        public DisconnectMessage readObject( ByteBuffer data, Class c ) throws IOException {
+        public <T> T readObject(ByteBuffer data, Class<T> c) throws IOException {
     
             // Read the null/non-null marker
             if (data.get() == 0x0)
@@ -96,7 +96,7 @@ public DisconnectMessage readObject( ByteBuffer data, Class c ) throws IOExcepti
             msg.reason = StringSerializer.readString(data);
             msg.type = StringSerializer.readString(data);
             
-            return msg;
+            return c.cast(msg);
         }
 
         @Override
diff --git a/jme3-plugins-json-gson/src/main/java/com/jme3/plugins/gson/GsonObject.java b/jme3-plugins-json-gson/src/main/java/com/jme3/plugins/gson/GsonObject.java
index 8aadbfb182..cf0ae7508b 100644
--- a/jme3-plugins-json-gson/src/main/java/com/jme3/plugins/gson/GsonObject.java
+++ b/jme3-plugins-json-gson/src/main/java/com/jme3/plugins/gson/GsonObject.java
@@ -78,7 +78,8 @@ public JsonElement get(String string) {
     @Override
     public Entry<String, JsonElement>[] entrySet() {
         Set<Entry<String, com.google.gson.JsonElement>> entrySet = obj().entrySet();
-        Entry<String, JsonElement>[] entries = new Entry[entrySet.size()];
+        @SuppressWarnings("unchecked")
+        Entry<String, JsonElement>[] entries = (Entry<String, JsonElement>[]) new Entry<?, ?>[entrySet.size()];
         int i = 0;
         for (Entry<String, com.google.gson.JsonElement> entry : entrySet) {
 
@@ -110,4 +111,4 @@ public JsonPrimitive getAsJsonPrimitive(String string) {
         com.google.gson.JsonPrimitive el= obj().getAsJsonPrimitive(string);
         return isNull(el) ? null : new GsonPrimitive(el);
     }
-}
\ No newline at end of file
+}
diff --git a/jme3-plugins/src/gltf/java/com/jme3/scene/plugins/gltf/TextureTransformExtensionLoader.java b/jme3-plugins/src/gltf/java/com/jme3/scene/plugins/gltf/TextureTransformExtensionLoader.java
index aff6fbdcf1..43f6078e36 100644
--- a/jme3-plugins/src/gltf/java/com/jme3/scene/plugins/gltf/TextureTransformExtensionLoader.java
+++ b/jme3-plugins/src/gltf/java/com/jme3/scene/plugins/gltf/TextureTransformExtensionLoader.java
@@ -91,12 +91,17 @@ private void uvTransform(Mesh mesh, Matrix3f transform, VertexBuffer.Type verTyp
                 fb.put(v.getX()).put(v.getY());
             }
             fb.clear();
-            tc.updateData(fb);   
-        }
-    }
-    
-    // The algorithm relies on the fact that the GltfLoader.class object 
-    // loads all textures of a given mesh before doing so for the next mesh.    
+            tc.updateData(fb);
+        }
+    }
+
+    @SuppressWarnings("unchecked")
+    private Map<Integer, Matrix3f> fetchTransformMap(GltfLoader loader) {
+        return loader.fetchFromCache("textureTransformData", 1, HashMap.class);
+    }
+
+    // The algorithm relies on the fact that the GltfLoader.class object
+    // loads all textures of a given mesh before doing so for the next mesh.
     @Override
     public Object handleExtension(GltfLoader loader, String parentName, JsonElement parent, JsonElement extension, Object input) throws IOException {
         if (!(input instanceof Texture2D)) {
@@ -129,11 +134,11 @@ public Object handleExtension(GltfLoader loader, String parentName, JsonElement
             }     
             if (jsonObject.has("texCoord")) {
                 texCoord = jsonObject.get("texCoord").getAsInt(); // it overrides the parent's texCoord value
-            }                 
-            Matrix3f transform = translation.mult(rotation).mult(scale);
-            Mesh meshLast = loader.fetchFromCache("textureTransformData", 0, Mesh.class);
-            Map<Integer, Matrix3f> transformMap = loader.fetchFromCache("textureTransformData", 1, HashMap.class);
-            if (mesh != meshLast || (transformMap != null && transformMap.get(texCoord) == null)) {
+            }
+            Matrix3f transform = translation.mult(rotation).mult(scale);
+            Mesh meshLast = loader.fetchFromCache("textureTransformData", 0, Mesh.class);
+            Map<Integer, Matrix3f> transformMap = fetchTransformMap(loader);
+            if (mesh != meshLast || (transformMap != null && transformMap.get(texCoord) == null)) {
                 // at this point, we're processing a new mesh or the same mesh as before but for a different UV set
                 if (mesh != meshLast) { // it's a new mesh
                     loader.addToCache("textureTransformData", 0, mesh, 2);
diff --git a/jme3-plugins/src/test/java/com/jme3/export/JmeExporterTest.java b/jme3-plugins/src/test/java/com/jme3/export/JmeExporterTest.java
index 9b86ca2902..96113bb6c9 100644
--- a/jme3-plugins/src/test/java/com/jme3/export/JmeExporterTest.java
+++ b/jme3-plugins/src/test/java/com/jme3/export/JmeExporterTest.java
@@ -42,6 +42,7 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.stream.Stream;
 
@@ -227,26 +228,27 @@ public InputStream openStream() {
         }
 
         // compare
-        Map<String, Object> userData[] = new Map[nodes.length];
+        List<Map<String, Object>> userData = new ArrayList<>(nodes.length);
         for (int i = 0; i < nodes.length; i++) {
             Node n = nodes[i];
-            userData[i] = new HashMap<String, Object>();
+            Map<String, Object> data = new HashMap<>();
             for (String k : n.getUserDataKeys()) {
-                userData[i].put(k, n.getUserData(k));
+                data.put(k, n.getUserData(k));
             }
+            userData.add(data);
         }
         compareMaps(userData);
     }
 
-    private static final void compareMaps(Map<String, Object>[] maps) {
-        String[] keys = maps[0].keySet().toArray(new String[0]);
+    private static final void compareMaps(List<Map<String, Object>> maps) {
+        String[] keys = maps.get(0).keySet().toArray(new String[0]);
         // check if all maps have the same keys and values for those keys
-        for (int i = 1; i < maps.length; i++) {
-            Map<String, Object> map = maps[i];
+        for (int i = 1; i < maps.size(); i++) {
+            Map<String, Object> map = maps.get(i);
             assertEquals(keys.length, map.size(), "Map " + i + " keys do not match");
             for (String key : keys) {
                 assertTrue(map.containsKey(key), "Missing key " + key + " in map " + i);
-                Object v1 = maps[0].get(key);
+                Object v1 = maps.get(0).get(key);
                 Object v2 = map.get(key);
                 if (v1.getClass().isArray()) {
                     boolean c = Arrays.equals((Object[]) v1, (Object[]) v2);