import java.awt.* ;

// A Frame that is a separate thread of execution. It uses a clock.
public class ClockedFrame extends Frame implements Runnable {
                          
protected String title;			// Title for the Frame
protected Thread me;			// The name of its thread
protected SystemClock clock;	// The clock for the Frame

// Constructor: a Frame with title t that is connected to clock c.
// The contents of the Frame and showing it, etc., are done in
// subclasses.
public ClockedFrame(SystemClock c, String t) {
    super(t);
    clock = c;
    title= t;
  	}

// Run this thread. This is the method required by interface
// Runnable. This method is invoked by method start() of class
// Thread to initiate execution. It loops forever: each iteration
// of the loop simply waits on the clock.
public void run() {
    me = Thread.currentThread();
    while(true) {
		synchronized(clock) {
	    	try {clock.wait();}
	    	catch(InterruptedException ie) {
				System.err.println(
				   "thread " + title + " interrupted, continuing...");
	      		}
	  		}
      	}
  	}
}