// This class can be inserted as an inner class in the GameApplet
// to provide mouse handling. 
    class HandleMouse extends MouseInputAdapter {
        public void mousePressed(MouseEvent e) { // overrides method in MIA
            updirection = true;  // updirection is an instance variable of GameApplet
        }

        public void mouseReleased(MouseEvent e) { // overrides method in MIA
            updirection = false;
        }

        public HandleMouse() { // constructor
            addMouseListener(this); // arranges for this objects methods to be 
                                    // called when mouse changes happen
        }
    }

    HandleMouse hm = new HandleMouse();