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        getRootPane().getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(
          KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), "Cancel");
          getRootPane().getActionMap().put("Cancel", new AbstractAction()
          { 
              public void actionPerformed(ActionEvent e)
              {
                  System.exit(0);
              }
       });