687: Mainline

The second step in preparing an application to respond to a click on a window's close button is to connect a listener instance to your application frame. That is, you connect, using addWindowListener, an instance of the listener defined in Segment 685 to a frame such as the one introduced in Segment 679:

import javax.swing.*;
public class Demonstrate {
 public static void main (String argv []) {
  JFrame frame = new JFrame("Movie Application");
  frame.setSize(350, 150);
  frame.addWindowListener(new ApplicationClosingWindowListener()); 
  frame.show(); 
 } 
}