Re: [Jython-dev] atexit (was Q: how to run cleanup method wheninterpreterexits?)

[Samuele P. <pe...@in...>]

[Ype Kingma]
> 
> I have run into the problem that when using swing it is necessary
> to call java.lang.System.exit() to exit the process running the
> jython interpreter. 

That's always true but from my point of view it's a sensible
behaviour wrt to the thread based vs. loop based model
used by Java GUIs. (I know it can be annoying if one uses
only some input dialogs for instance )
But it's inherited from pure Java GUI code, try:

import javax.swing.*;

public class JB {

  public static void main(String[] args) {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    JButton b = new JButton("Ok");
    f.getContentPane().add(b);
    f.pack();
    f.show();

  }

}

or

import javax.swing.*;

public class JOP {

  public static void main(String[] args) {
 int result = JOptionPane.showConfirmDialog(null, 
 "Will an answer leave the app?", "?", 
                JOptionPane.YES_NO_OPTION);
  }

}

Otherwise one would have to put some unnatural wait
or loop in the main thread.

regards.