src/share/classes/sun/awt/datatransfer/SunClipboard.java

*** 259,268 ****
--- 259,270 ----
              final AppContext disposedContext = (AppContext)evt.getSource();
              lostOwnershipLater(disposedContext);
          }
      }
      
+     public abstract void checkLostOwnership();
+ 
      protected void lostOwnershipImpl() {
          lostOwnershipLater(null);
      }
  
      /**