Java JFrame handle window event via WindowListener

import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;

import javax.swing.JFrame;

class My implements WindowListener {
   public void windowClosing(WindowEvent e) {
      System.out.println("closing");
      System.exit(0);//from w  w  w  . jav a 2 s.c o  m
   }

   public void windowOpened(WindowEvent e) {
   }

   public void windowClosed(WindowEvent e) {
   }

   public void windowIconified(WindowEvent e) {
   }

   public void windowDeiconified(WindowEvent e) {
   }

   public void windowActivated(WindowEvent e) {
   }

   public void windowDeactivated(WindowEvent e) {
   }

}

public class Main {

   public static void main(String[] args) {
      JFrame window = new JFrame("java2s.com");
      window.setBounds(30, 30, 300, 300);
      window.addWindowListener(new My());
      window.setVisible(true);

   }
}