import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class TestFrameListener {

  public static void main(String[] args){

    Frame frame = new Frame();

    frame.setTitle("My first JFrame!");
    /* Without show() the frame will not appear on screen! */
    frame.setSize(200,400);
    frame.show();

    frame.addWindowListener(new myWindowListener());

  }

  
}
 class myWindowListener extends WindowAdapter{

    public void windowClosing(WindowEvent e){System.exit(0);}

  }
/* Instead I could have used
 * class myWindowListener implements WindowListener{
 * }
 */