src/macosx/classes/sun/lwawt/LWComponentPeer.java

@@ -370,11 +370,11 @@
     public LWToolkit getLWToolkit() {
         return LWToolkit.getLWToolkit();
     }
 
     @Override
-    public void dispose() {
+    public final void dispose() {
         if (disposed.compareAndSet(false, true)) {
             disposeImpl();
         }
     }