Java AWT MouseAdapter extend

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JFrame;
import javax.swing.SwingUtilities;

class MouseClickListener extends MouseAdapter {

   public void mouseClicked(MouseEvent e) {
      if (SwingUtilities.isLeftMouseButton(e)) {
         System.out.print("The mouse left button was clicked");
      } else if (SwingUtilities.isRightMouseButton(e)) {
         System.out.print("The mouse right button was clicked");
      } else if (SwingUtilities.isMiddleMouseButton(e)) {
         System.out.print("The mouse middle button was clicked");
      }/*from   w  ww . jav  a  2 s.  c o m*/
      System.out.print(e.getClickCount() + "time(s)");
      int x = e.getX();
      int y = e.getY();
      System.out.println(" at (" + x + "," + y + ")");
   }
}

public class Main {

   public static void main(String[] args) {
      JFrame frame = new JFrame("java2s.com");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.addMouseListener(new MouseClickListener());
      frame.setSize(200, 200);
      frame.setVisible(true);
   }
}