public abstract class MouseAdapter implements MouseListener {
/**
* Invoked when the mouse has been clicked on a component.
*/
public void mouseClicked(MouseEvent e) {}

/**
* Invoked when a mouse button has been pressed on a component.
*/
public void mousePressed(MouseEvent e) {}

/**
* Invoked when a mouse button has been released on a component.
*/
public void mouseReleased(MouseEvent e) {}

/**
* Invoked when the mouse enters a component.
*/
public void mouseEntered(MouseEvent e) {}

/**
* Invoked when the mouse exits a component.
*/
public void mouseExited(MouseEvent e) {}
}


public abstract class MouseMotionAdapter implements MouseMotionListener {
/**
* Invoked when a mouse button is pressed on a component and then
* dragged. Mouse drag events will continue to be delivered to
* the component where the first originated until the mouse button is
* released (regardless of whether the mouse position is within the
* bounds of the component).
*/
public void mouseDragged(MouseEvent e) {}

/**
* Invoked when the mouse button has been moved on a component
* (with no buttons no down).
*/
public void mouseMoved(MouseEvent e) {}
}

переопредели некоторые методы
object.addMouseMotionListener(new MouseMotionAdapter(){
public void mouseDragged(MouseEvent e){
}

}
public void mouseMoved(MouseEvent e) {

}
});