ToolTip location with different JRE's

Question

Hi,
I am trying to set the location of the tooltip for a JButton. I am able to do so with jre 1.5, but when I run the app on jre 1.4.2_03 or 1.4.2_06, the tooltip appears in a different location. I would like to have the tooltip appear just to the right of the button, on the right outside edge of the window. With 1.4.2_0X, the tooltip appears inside of the window, and the tooltip area will not draw outside of the window. Below is the code, any help would be greatly appreciated!
public class ToolTipTester extends JFrame implements ActionListener
    private JPanel mainPanel;
    private Timer refresher;
    private JButton tempButton;
    private ArrayList myButtons;
    private int numButtons = 10;
    public ToolTipTester()
        initializeDisplay();
        initializeButtons(); 
        updateDisplay();
        setVisible(true);
        refresher = new Timer(1000,this);
        refresher.start();
    public static void main(String[] args)
        ToolTipTester ttt = new ToolTipTester();
    private void initializeButtons()
        myButtons = new ArrayList(numButtons);    
        for(int i = 0; i < numButtons; i++)
            tempButton = new JButton("Button#"+i) {
                public Point getToolTipLocation(MouseEvent event) {
                    return new Point(getWidth(),0);
            tempButton.setToolTipText("ToolTipText");
            myButtons.add(i, tempButton);           
    private void initializeDisplay()
        setResizable(false);
        setTitle("ToolTipTester");
        mainPanel = (JPanel)getContentPane();
        mainPanel.setLayout( new GridLayout(numButtons,1) );  
        String lookAndFeel = UIManager.getCrossPlatformLookAndFeelClassName();
        try {
            UIManager.setLookAndFeel(lookAndFeel);
        } catch (Exception e) { }
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        ToolTipManager.sharedInstance().setInitialDelay(0);
        ToolTipManager.sharedInstance().setDismissDelay(Integer.MAX_VALUE);
    private void updateDisplay()
        mainPanel.removeAll();  
        for( int i = 0; i < numButtons; i++ )
            tempButton = (JButton)myButtons.get(i);
            mainPanel.add(tempButton);  
            tempButton.repaint();
        pack();
    public void actionPerformed ( ActionEvent e )
          if( e.getSource() == refresher)
              updateDisplay();
}

Answer 1

Serialization is not guaranteed to be compatible between versions. The API for the specific case should have some information about this - check the later version docs.
One solution is to recompile with the new version.