在打开新框架时关闭jframe

Question

i try to open new frame which is named stage2 while closing the main frame. but when i put main.setVisible(false) there its said not an enclosing class and i put this listener on jpanel class which called by the mainframe. so its look like this..

class main extends JFrame()
{
   main()
     {
     }
   add(story2)
}

class story2 extends JPanel()
{
    public void mouseClicked(MouseEvent e)
            {

                 new stage2(); 
                 main.this.setVisible(false);
            }
}

Answer 1

That is because story2 is indeed not an inner class of main . You should use JComponent's getTopLevelAncestor() to get a handle to the JFrame story2 is in and then do what you want with the JFrame. Something like this:

((JFrame)this.getTopLevelAncestor()).dispose();

(If you won't be needing main JFrame any more, it is better to use dispose() than just setVisibke(false) , in order to free resources and memory.)

The above code-sample is just a demonstration. In a production-ready app you should, of course, first check that the top-level ancestor can be cast to JFrame (or at least Window).