Handling Mouse Motion

 component.addMouseMotionListener(
   new MyMouseMotionListener());
     
 public class MyMouseMotionListener extends 
   MouseMotionAdapter {
     public void mouseMoved(MouseEvent evt) {
       // Process current position of cursor while 
       // all mouse buttons are up.
       process(evt.getPoint());
     }
     public void mouseDragged(MouseEvent evt) {
        // Process current position of cursor 
        // while mouse button is pressed.
         process(evt.getPoint());
     }
 }