Closing a sub frame

Question

Hey Folks
I posted a topic a few days ago concerned a problem i was having. The problem basically was that i was calling a frame from within a frame. All that i want to be able to do with this new frame is just for displaying a picture. I want to be able to close the sub frame without closing the main frame also, this is really the aim of tis post. I did up this small example of two sperate class. If any one can see the problem or can even fix it.
Thanking You
Ambrose
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
public class Main extends JPanel implements ActionListener
    private JButton b1;
    public Main() {
        //construct components
        b1 = new JButton ("Sub Form Button");
        //adjust size and set layout
        setPreferredSize (new Dimension (500, 500));
        setLayout (null);
        //add components
        add (b1);
        //set component bounds (only needed by Absolute Positioning)
        b1.setBounds (70, 85, 140, 20);
        b1.addActionListener(this);
     public void actionPerformed( ActionEvent e )
      Object Target = e.getSource();
     if ( Target ==b1)
     JFrame frame = new JFrame ("Sub");
        frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add (new Sub());
        frame.pack();
        frame.setVisible (true);
    public static void main (String[] args) {
        JFrame frame = new JFrame ("Main");
        frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add (new Main());
        frame.pack();
        frame.setVisible (true);
     class Sub extends JPanel implements ActionListener {
    private JButton b2;
    public Sub() {
        //construct components
        b2 = new JButton ("Main Form");
        //adjust size and set layout
        setPreferredSize (new Dimension (313, 230));
        setLayout (null);
        //add components
        add (b2);
        //set component bounds (only needed by Absolute Positioning)
        b2.setBounds (70, 85, 140, 20);
        b2.addActionListener(this);
     public void windowActivated(WindowEvent e)
     public void windowClosed(WindowEvent e)
     //Main.dispose();
     public void windowClosing(WindowEvent e)
          //new JFrame ("Main").dispose();
     public void windowDeactivated(WindowEvent e)
     public void windowDeiconified(WindowEvent e)
     public void windowIconified(WindowEvent e)
     public void windowOpened(WindowEvent e)
     public void actionPerformed( ActionEvent e )
      Object Target = e.getSource();
     if ( Target ==b2)
          System.out.println("Testing Method");
          JFrame frame = new JFrame ("Main");
        frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add (new Main());
        frame.pack();
        frame.setVisible (true);
}

Answer 1

Without looking at this code sample I can recommend you:
For example you have 4 classes:
loader : load app up
frame1 : self-explanatory
frame2 : self-explanatory
glue : class that has static references to both frames
So, thanx to glue, you can access both frames from whatever place in code.
-- Use jframe's setVisible (true/false) to hide/show frames whenever you want to.