Resizing Image when JFrame resized?

Question

I have a JFrame with a JPanel added to the contentPane (BorderLayout.CENTER). In the JPanel is a JLabel (BorderLayout.CENTER) with an ImageIcon set to it. The image is a subimage of a larger image whose width is scaled to fit the current JLabel width (which is dictated by the JPanel width and finally dictated by the JFrame width).
When the user resizes the JFrame, the image of the ImageIcon should be replaced with a new image which has been scaled to fit the new width and that reflects the new portion of the larger source image that is visible.
The JFrame already has a ComponentListener added for retaining the current JFrame size and screen position, but calling my resizeDisplay() method from componentResized() does not seem to have the updated JLabel size. I have added a ComponentListener to the JLabel and called my resizeDisplay() method from componentResized() but it does not seem to have the updated JLabel size either.
How can my application properly react to JFrame resizes so that the method is retrieving the new size values?
Thanks,
Robert Templeton

Answer 1

Its always easier to solve a problem when sample code (not a complete program) is posted with the question.
Maybe I don't understand the question, but when I run the following code the output reflects the size of the label after it has been resized. I'm using JDK1.3 on Window 98.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
public class TestLabel extends JFrame
     public TestLabel()
          JPanel panel = new JPanel();
          setContentPane( panel );
          panel.setPreferredSize( new Dimension( 200, 200 ) );
          panel.setLayout(new BorderLayout() );
          final JLabel myLabel = new JLabel( new ImageIcon("dukeWaveRed.gif"), JLabel.CENTER );
          panel.add( myLabel );
          myLabel.addComponentListener( new ComponentAdapter()
               public void componentResized(ComponentEvent e)
                    System.out.println( myLabel.getSize() );
     public static void main(String[] args)
          TestLabel frame = new TestLabel();
          frame.setDefaultCloseOperation( EXIT_ON_CLOSE );
          frame.pack();
          frame.setVisible(true);
}