public class MouseAdapter implements MouseListener
{ 
   public void mouseClicked(MouseEvent event) {} 
   public void mousePressed(MouseEvent event) {}
   public void mouseReleased(MouseEvent event) {}
   public void mouseEntered(MouseEvent event) {} 
   public void mouseExited(MouseEvent event) {} 
}

addMouseListener(new
   MouseAdapter()
   {
      public void mousePressed(MouseEvent event) 
      {
         mouse action goes here 
} 
});