多種Close a Frame

public aFrame extends Frame implements WindowListener {
  public aFrame(){
    addWindowListener( this );
    }
  public void windowActivated(WindowEvent e){}
  public void windowDeactivated(WindowEvent e){}
  public void windowOpened(WindowEvent e){}
  public void windowClosing(WindowEvent e){ System.exit(0); }
  public void windowClosed(WindowEvent e){}
  public void windowIconified(WindowEvent e) {}
  public void windowDeiconified(WindowEvent e) {}
}
======================
public class aFrame extends Frame {
  public aFrame(){
     addWindowListener( new Terminate() );
     }
  }

class Terminate extends WindowAdapter{
 public void windowClosing(WindowEvent e){
   System.exit(0);
   }
}
======================
public class aFrame extends Frame {
 public aFrame() {
   addWindowListener
     (new WindowAdapter() {
         public void windowClosing(WindowEvent e) {
            System.exit(0);
            }
         }
     );
   }
}