How do I call a method when exiting?

Question

I have a swing application. As long as the application runs I manipulate the within class. But when user EXITS_ON_ClOSE , I have to save the data in a file How do I save it. Here is my current implementation

    public static void main (String args[]) throws NumberFormatException, IOException{
        displayCalendar p;
        Saver save = new Saver();      
        p = new displayCalendar(save);

        JFrame fr = new JFrame();
        fr.add(p);
        fr.setDefaultCloseOperation(EXIT_ON_CLOSE);
        fr.setSize(500,500);
        fr.setVisible(true);
        save.saveAll();
}

That is I am trying to save before exiting main. But I can't get to that function at all. How do I save it?

Have a look at [How to Write Window Listeners](http://docs.oracle.com/javase/tutorial/uiswing/events/windowlistener.html) — MadProgrammer, May 28 '14 at 10:42

score 1 · Accepted Answer · answered May 28 '14 at 10:43

Here may be your solution

addWindowListener(new WindowAdapter()
        {
            @Override
            public void windowClosing(WindowEvent windowEvent)
            {
               // here your logic to save the data
                System.out.println("Window is being Closed");
                windowEvent.getWindow().dispose();
            }
        });

Masudul · Answer 2 · 2014-05-28T11:14:02.247

0

Add WindowListener with JFrame,

fr.addWindowListener(new WindowAdapter() {
   @Override
   public void windowClosing(WindowEvent e) {
       //Call the method here.
   }
}

edited May 28 '14 at 11:14

answered May 28 '14 at 10:42

Masudul

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score 0 · Answer 3 · edited May 23 '17 at 11:51

0

Create a custom operation on setDefaultCloseOperation with WindowAdapter :

See this i hope it's helpful for you.

edited May 23 '17 at 11:51

Community

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answered May 28 '14 at 10:45

Mifmif

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How do I call a method when exiting?

3 Answers3