--- old/src/share/classes/javax/swing/plaf/basic/CenterLayout.java	2014-02-18 18:21:27.000000000 -0800
+++ new/src/share/classes/javax/swing/plaf/basic/CenterLayout.java	2014-02-18 18:21:26.000000000 -0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2003, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 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
@@ -35,6 +35,8 @@
   * @author Steve Wilson
   */
 class CenterLayout implements LayoutManager, Serializable {
+    private static final long serialVersionUID = -6757819709502094542L;
+
     public void addLayoutComponent(String name, Component comp) { }
     public void removeLayoutComponent(Component comp) { }