import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class Monitor {
	private int teller = 0;
	Lock lås = new ReentrantLock();

	public void øk() {
		lås.lock();
		try {
			teller++;
		} finally {
			lås.unlock();
		}
	}

	public void printTall() {
		lås.lock();
		try {
			System.out.println(teller);
		} finally {
			lås.unlock();
		}
	}
}