src/share/classes/sun/awt/SunToolkit.java

*** 1983,1992 ****
--- 1983,1999 ----
      public boolean isTranslucencyCapable(GraphicsConfiguration gc) {
          return false;
      }
  
      /**
+      * Returns true if swing backbuffer should be translucent.
+      */
+     public boolean isSwingBackbufferTranslucencySupported() {
+         return false;
+     }
+ 
+     /**
       * Returns whether or not a containing top level window for the passed
       * component is
       * {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}.
       *
       * @param c a Component which toplevel's to check