/**
 * @author: Babak Esfandiari
 */
class Student implements java.util.Observer {
	String name = null;
	Course course = null; //assuming one course for simplicity sake

public Student(String aName) {
	super();
	name = aName;
}

String getName() {
	return name;
}
/**
 * Each time a student registers a course, he/she also subscribes
 * for the prof's notifications related to that course.
 */
void registerCourse(Course aCourse) {
	course = aCourse;
	course.getProf().addObserver(this);
}
	/**
	 * This method is called whenever the observed object is changed. An
	 * application calls an <tt>Observable</tt> object's
	 * <code>notifyObservers</code> method to have all the object's
	 * observers notified of the change.
	 *
	 * @param   o     the observable object.
	 * @param   arg   an argument passed to the <code>notifyObservers</code>
	 *                 method.
	 */
public void update(java.util.Observable o, Object arg) {
	System.out.println("Doh!");
	}
}