package threadCooperation;
import java.util.Random;

public class ClassRoom {
	private boolean roomReady = false, computerReady = false;
	private Random random = new Random(123);
	private static int totalClasses = 0;
	
	public synchronized void fixRoom() {
		while (roomReady && computerReady) {
			System.out.println("No repairs needed...");
			try {
				this.wait();
			} catch(InterruptedException e) {
				e.printStackTrace();
			}
		}
		roomReady = computerReady = true;
		System.out.println("FixRoom: Room Ready");
		this.notify();
	}
	
	public synchronized void startTeaching() {
		try {
			while (!roomReady || !computerReady) {
				this.notify();
				System.out.println("Teacher waiting...");
				this.wait();
			}
			System.out.println("Teaching class: " + ++totalClasses);
			roomReady = random.nextBoolean();
			computerReady = random.nextBoolean();
			String status = "After Teaching:  roomReady " + roomReady;
			status += " computerReady " + computerReady;
			System.out.println(status);
		} catch(InterruptedException e){e.printStackTrace();}
	}
}