Overlapping two JPanels on a JLayeredPane

Question

I am having some problems overlapping two JPanels on a JLayeredPane for some reason only one of them shows when I compile the program! Any help would be greatly appreciated
The code is the following:
import java.lang.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class SpaceBall
//To do the background just draw a JPanel inside another //JPanel just set the opacity of the outside one
//to false and let
//it hold all the components of the game
public static void main(String[] args)
//declaring the buttons
JButton test=new JButton("test");
JButton test1=new JButton("test1");
JButton test2=new JButton("test2");
//declaring and setting the properties of the frame
JFrame SpaceBall= new JFrame("Space Ball");
SpaceBall.setSize(700,650);
//declaring the Panels
JLayeredPane bgPanel= new JLayeredPane();
JPanel fgPanel= new JPanel();
JPanel topPanel= new JPanel();
JPanel sidePanel= new JPanel();
JPanel lowPanel= new JPanel();
JPanel masterPanel= new JPanel();
//adding the buttons to the corresponding panels
fgPanel.add(test1);
sidePanel.add(test2);
topPanel.add(test);
ImageIcon background= new ImageIcon("images/background.jpg");
JLabel backlabel = new JLabel(background);
backlabel.setBounds(0,0,background.getIconWidth(),background.getIconHeight());
backlabel.add(test1);
bgPanel.add(backlabel, new Integer(0));
fgPanel.setOpaque(false);
bgPanel.add(fgPanel, new Integer(100));
bgPanel.moveToFront(fgPanel);
//adding bgPanel and sidePanel to lowPanel
lowPanel.setLayout(new GridLayout(1,2));
lowPanel.add(bgPanel);
lowPanel.add(sidePanel);
//adding the Panels to the masterPanel
masterPanel.setLayout(new GridLayout(2,1));
masterPanel.add(topPanel);
masterPanel.add(lowPanel);
//getting the container of SpaceBall and adding the Panels to it
Container cp=SpaceBall.getContentPane();
cp.add(masterPanel);
//displaying everything
SpaceBall.show();
WindowListener ClosingTheWindow=new WindowAdapter()
public void windowClosing(WindowEvent e)
System.exit(0);
SpaceBall.addWindowListener(ClosingTheWindow);

Answer 1

Take a look at the section from the Swing tutorial titled "How to Use Layered Panes". It has a sample program:
http://java.sun.com/docs/books/tutorial/uiswing/components/layeredpane.html