src/share/classes/javax/swing/Popup.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -226,10 +226,11 @@
 
 
     /**
      * Component used to house window.
      */
+    @SuppressWarnings("serial") // Superclass is not serializable across versions
     static class HeavyWeightWindow extends JWindow implements ModalExclude {
         HeavyWeightWindow(Window parent) {
             super(parent);
             setFocusableWindowState(false);
             setType(Window.Type.POPUP);

@@ -265,8 +266,9 @@
      * Used if no valid Window ancestor of the supplied owner is found.
      * <p>
      * PopupFactory uses this as a way to know when the Popup shouldn't
      * be cached based on the Window.
      */
+    @SuppressWarnings("serial") // JDK-implementation class
     static class DefaultFrame extends Frame {
     }
 }