public void mouseClicked(MouseEvent e){
          System.out.println("buttonC clicked");
        }//end mouseClicked
        
        //All interface methods must be defined
        public void mousePressed(MouseEvent e){}
        public void mouseReleased(MouseEvent e){}
        public void mouseEntered(MouseEvent e){}
        public void mouseExited(MouseEvent e){}

      }//end class definition
    );//end addMouseListener call

    add(buttonC);//add button to frame