java需要关注的知识点---并发之加入一个新线程

package com.thread;

public class Joining {
	public static void main(String[] args) {
		Sleeper sleepy = new Sleeper("Sleepy",15000),
				grumpy = new Sleeper("Grumpy",15000);
		Joiner  dopey = new Joiner("Dopey",sleepy),
				doc = new Joiner("Doc",grumpy);
		grumpy.interrupt();
	}
}

class Sleeper extends Thread{
	private int duration;
	
	public Sleeper(String name,int duration) {
		super(name);
		this.duration = duration;
		start();
	}

	public void run() {
		try {
			sleep(duration);
		} catch (InterruptedException e) {
			System.out.println(getName() + " is Interrupted:" + isInterrupted());
		}
		System.out.println(getName() + " has awakened");
	}
}

class Joiner extends Thread{
	private Sleeper sleeper;

	public Joiner(String string, Sleeper sleepy) {
		super(string);
		this.sleeper = sleepy;
		start();
	}

	
	public void run() {
		try {
			sleeper.join();
		} catch (InterruptedException e) {
			System.out.println(" is Interrupted:" + isInterrupted());
			e.printStackTrace();
		}
		System.out.println(getName() + " join completed");
	}
	
}