Closing One JFrame instead of All JFrames?

Question

Hello everyone,
I am developing a program using Sun's Forte community edition V3.0, this is for an assignment and I have chosen Java and Swing instead of the Recommended MS Access. Grin (You got to love a challenge.)
I have a menu class that allows users to create instances of other classes by clicking various buttons representing options.
When the user clicks a button a new class instance is created allowing the user to interact with the system.
//-- Action in response to a buton click. This calls an instance of a working
//-- class.
private void jButton4MouseClicked(java.awt.event.MouseEvent evt) {
        final JFrame fs = new SRemClassEntryFr();
        fs.setBounds(150, 150, 530, 398);
        fs.setVisible(true);
        fs.setTitle("SRemClassEntry");
        fs.setDefaultCloseOperation(HIDE_ON_CLOSE);
        fs.getContentPane().setBackground(java.awt.Color.cyan);
        fs.addWindowListener(new WindowAdapter(){
            public void windowClosed(WindowEvent e){
                System.exit(0);
//-- The starting class of the application. A simple class that calls other
//-- classes based on users selecting menu items represented as buttons
public static void main(String args[]) {
        //-- new AdminMainMenuFr().show();
        final JFrame f = new AdminMainMenuFr();
        //f.setContentPane(f.getContentPane());
        f.setBounds(150, 150, 620, 560);
        f.setVisible(true);
        f.setTitle("Admininistrator Main Menu");
        f.getContentPane().setBackground(java.awt.Color.cyan);
        f.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        f.addWindowListener(new WindowAdapter(){
            public void windowClosed(WindowEvent e){
                System.exit(0);
    }My application is behaving itself as intended, it does have a major problem and that is...
On selecting an operation from the Administrator menu, I am able to use and interact with that specified object instance. Unfortunately when I close the open object, it not only closes the said object but the underlying Administrator menu object also.
Does anyone have any ideas on how I should be doing this?
Thanks in advance
Mark.

Answer 1

fs.setTitle("SRemClassEntry");
fs.setDefaultCloseOperation(HIDE_ON_CLOSE);
fs.getContentPane().setBackground(java.awt.Color.cyan);
fs.addWindowListener(new WindowAdapter(){ 
public void windowClosed(WindowEvent e){
System.exit(0); /// here is the problem
});you say when the SRemClassEntry is closed, "exit the program" , (System.exit(0);)
hope that helps