You will create an online university course discussion forum. There is one forum and many subscribers. When an update to the forum is made, the subscribers are notified. Subscribers have the option of unsubscribing when they no longer want to be notified of changes to the discussion forum public class StudentDashboard extends Observable { private int unreadMessages; public StudentDashboard() { unreadMessages = 0; } public void setUnreadMessages(int messages) { unreadMessages = messages; } public int getUnreadMessages() { return unreadMessages; } }

public class ForumMonitor implements Observer { public static final int UNREAD_ALERT_LEVEL = 0; public void update(Observable observable, Object object) { StudentDashboard messages = (StudentDashboard) observable; if (messages.getUnreadMessages() > UNREAD_ALERT_LEVEL) { System.out.println("You have " + messages.getUnreadMessages() + " unread messages."); } else { System.out.println("No unread messages found."); } } }

Please code Observer and Observable for the Observer Pattern codes