Question

I have to save the state of the program in a xml when the user clicks the Close Button or another JButton which says Exit on it. I have it so it runs using a WindowListener when the Window is closing it runs it. But that only works if you click the Red X close button, but not when you have the other button. I could run it before I do System.exit(0) in actionListener for button but some of the classes I need information from I do not have access from that place.

This is for the frame.

frame.addWindowListener(new WindowListener(){
    public void windowActivated(WindowEvent arg0){}
    public void windowClosed(WindowEvent arg0){}
    public void windowClosing(WindowEvent arg0)
    {
        myScreen.write.writeToXmlFile(myScreen.pics, myScreen.row, myScreen.col);
    }
    public void windowDeactivated(WindowEvent arg0){}
    public void windowDeiconified(WindowEvent arg0){}
    public void windowIconified(WindowEvent arg0){}
    public void windowOpened(WindowEvent arg0){}
});

This is the code in button.

public void actionPerformed(ActionEvent arg0) {
        System.exit(0);
}

I do not have access to myScreen from the class that has button in it.

Answer 1

I do not have access to myScreen from the class that has button in it.

JButton#doClick(); can do that

but correct way could be too (maybe)

• public void windowClosing(WindowEvent arg0)

1st. void or class

• create screenshot

2.nd void or class

• setVisible(false) for Top-Level Container(s)

3rd void or class

• save applications states

4th void or class

• System.exit()

sure you can put all 4 voids (classes) to the one, but in a.m. case is code only more clear and readable