Party.java

import java.util.concurrent.BrokenBarrierException;
import java.util.concurrent.CyclicBarrier;
public class Party extends Thread {
    private int duration;
    private CyclicBarrier barrier;

    public Party(int duration, CyclicBarrier barrier, String name) {
        super(name);
        this.duration = duration;
        this.barrier = barrier;
    }

    @Override
    public void run() {
        try {
            Thread.sleep(duration);
            System.out.println(Thread.currentThread().getName() + " is calling await()");
            barrier.await();
            System.out.println(Thread.currentThread().getName() + " has started running again");
        } catch (BrokenBarrierException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}