diff --git a/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/Storage.java b/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/Storage.java
index ee0b93afaa4..7b75aa2db68 100755
--- a/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/Storage.java
+++ b/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/Storage.java
@@ -19,6 +19,10 @@ public class Storage extends JavaScriptObject {
         registerAsStorageEventHandler();
     }
     
+    protected Storage() {
+        super();
+    }
+    
     private static void registerAsStorageEventHandler() {
         if (isSupported()) {
             registerAsStorageEventHandlerImpl();
@@ -100,27 +104,27 @@ public class Storage extends JavaScriptObject {
         return result;
     }
     
-    public native void setItem(String key, String value) /*-{
+    public final native void setItem(String key, String value) /*-{
         this.setItem(key, value);
     }-*/;
 
-    public native String getItem(String key) /*-{
+    public final native String getItem(String key) /*-{
         return this.getItem(key);
     }-*/;
 
-    public native void removeItem(String key) /*-{
+    public final native void removeItem(String key) /*-{
         return this.removeItem(key);
     }-*/;
 
-    public native void clear() /*-{
+    public final native void clear() /*-{
         this.clear();
     }-*/;
 
-    public native String getKey(int index) /*-{
+    public final native String getKey(int index) /*-{
         return this.key(index);
     }-*/;
 
-    public native int getLength() /*-{
+    public final native int getLength() /*-{
         return this.length;
     }-*/;
 }
diff --git a/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/StorageEvent.java b/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/StorageEvent.java
index fede0873f12..5dd8566d5d1 100755
--- a/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/StorageEvent.java
+++ b/java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/StorageEvent.java
@@ -12,31 +12,35 @@ import com.google.gwt.core.client.JavaScriptObject;
  *
  */
 public class StorageEvent extends JavaScriptObject {
+    protected StorageEvent() {
+        super();
+    }
+    
     public static interface Handler {
         void onStorageChange(StorageEvent event);
     }
 
-    public native String getKey() /*-{
+    public final native String getKey() /*-{
         return this.key;
     }-*/;
 
-    public native String getNewValue() /*-{
+    public final native String getNewValue() /*-{
 	return this.newValue;
     }-*/;
 
-    public native String getOldValue() /*-{
+    public final native String getOldValue() /*-{
 	return this.oldValue;
     }-*/;
 
-    public Storage getStorageArea() {
+    public final Storage getStorageArea() {
         return getStorageAreaImpl().cast();
     }
 
-    private native JavaScriptObject getStorageAreaImpl() /*-{
+    private final native JavaScriptObject getStorageAreaImpl() /*-{
         return this.storageArea;
     }-*/;
 
-    public native String getUrl() /*-{
+    public final native String getUrl() /*-{
         return this.url;
     }-*/;
 }