public class Fubar implements MouseListener, MouseEventListener {
    private Point mouseLoc = new Point(-1,-1);

    public void mouseDoubleClick(MouseEvent e){
    }
    public void mouseDown(MouseEvent e)
    {
        mouseLoc.x = e.x;
        mouseLoc.y = e.y;
        /* 
         * do other processing: 
         *  ANOTHER EVENT OCCUR AND CHANGE mouseLoc?
         */
    }
    public void mouseUp(MouseEvent e)
    {
        /* 
         * do other processing (maybe change mouseLoc): 
         *  ANOTHER EVENT OCCUR AND CHANGE mouseLoc?
         */
    }
    public void mouseMove(MouseEvent e)
    {
        /* 
         * do other processing (maybe change mouseLoc): 
         *  ANOTHER EVENT OCCUR AND CHANGE mouseLoc?
         */
    }
}