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help with swing code

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I have to say, I like Swing, but sometimes making simple things with it can be such a pain. I copied one of the tutorials from java.sun, and it still doesn't work. I know it's somewhat long, but I would really appreciate it if you could help. It's supposed to display an image on top of the background. Here it is.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Example implements ActionListener {
JLayeredPane layeredPane;
JLabel bgLabel, fgLabel;
int fgHeight, fgWidth;
int bgHeight, bgWidth;

void buildUI(Container container, Image bgImage, Image fgImage) {
final ImageIcon bgIcon = new ImageIcon(bgImage);
final ImageIcon fgIcon = new ImageIcon(fgImage);
bgWidth = bgIcon.getIconWidth();
bgHeight = bgIcon.getIconHeight();
fgWidth = fgIcon.getIconWidth();
fgHeight = fgIcon.getIconHeight();

bgLabel = new JLabel(bgIcon);
bgLabel.setOpaque(true);
bgLabel.setBounds(0, 0, bgWidth, bgHeight);

fgLabel = new JLabel(fgIcon);
fgLabel.setBounds(0, 0, fgWidth, fgHeight);

layeredPane = new JLayeredPane();
layeredPane.setPreferredSize(new Dimension(bgWidth, bgHeight));
layeredPane.add(bgLabel, new Integer(0));
layeredPane.add(fgLabel, new Integer(1));
container.add(layeredPane, BorderLayout.CENTER);
}

public static void main(String[] args) {
Image bgImage = Toolkit.getDefaultToolkit().getImage("arena.bmp");
Image fgImage = Toolkit.getDefaultToolkit().getImage("man.bmp");
Example ex = new Example();
JFrame f = new JFrame();
ex.buildUI(f.getContentPane(), bgImage, fgImage);
f.setSize(500, 500);
f.setVisible(true);
}

public void actionPerformed(ActionEvent event) {
fgLabel.setLocation(100, 100);
}
}


EDIT: forgot to mention that it compiles but when you run it, you see nothing but the frame. Thanks. [edited by - romanMagyar on September 23, 2003 8:16:22 PM]

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That''s wierd man, everything looks OK to me. There should be a repaint() in the actionPerformed() method probably. And maybe in main, put an f.show() statement. Different versions of Java behave differently with the JFrame stuff, which can be really really annoying at times. Make sure you have the latest, 1.4.2 I believe.

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