src/share/classes/javax/swing/plaf/basic/BasicOptionPaneUI.java

*** 1,7 ****
  /*
!  * Copyright (c) 1997, 2013, 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
--- 1,7 ----
  /*
!  * Copyright (c) 1997, 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
*** 391,400 ****
--- 391,401 ----
                  nll = 1;
              }
              if (nl >= 0) {
                  // break up newlines
                  if (nl == 0) {
+                     @SuppressWarnings("serial") // anonymous class
                      JPanel breakPanel = new JPanel() {
                          public Dimension getPreferredSize() {
                              Font       f = getFont();
  
                              if (f != null) {
*** 1336,1345 ****
--- 1337,1347 ----
       * not they are registered on the JTextField. This is used as we really
       * want the ActionListener to be notified so that we can push the
       * change to the JOptionPane, but we also want additional bindings
       * (those of the JRootPane) to be processed as well.
       */
+     @SuppressWarnings("serial") // Superclass is not serializable across versions
      private static class MultiplexingTextField extends JTextField {
          private KeyStroke[] strokes;
  
          MultiplexingTextField(int cols) {
              super(cols);
*** 1429,1438 ****
--- 1431,1441 ----
                  button.setMnemonic(mnemonic);
              }
              return button;
          }
  
+         @SuppressWarnings("serial") // Superclass is not serializable across versions
          private static class ConstrainedButton extends JButton {
              int minimumWidth;
  
              ConstrainedButton(String text, int minimumWidth) {
                  super(text);