联合线程（案例顾客买蛋糕 ：使用join()方法）

运行效果图：

aaarticlea/png;base64,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" alt="" />

 

 

代码：

package com.niit.syntronized;

/**
 * @author: Annie
 * @date:2016年6月15日
 * @description:线程联合(顾客到蛋糕店买蛋糕)使用join()方法
 */
public class ThreadJoin implements Runnable{

    Thread joinThread;
    Cake cake;
    public void setThread(Thread t){
        joinThread =t;
    }
    @Override
    public void run() {
        if(Thread.currentThread().getName().equals("顾客")){
            System.out.println(Thread.currentThread().getName()+"正在等待"+joinThread.getName()+"制作生日蛋糕");
            try {
                joinThread.start();
                joinThread.join();
            } catch (InterruptedException e) {}

            System.out.println(Thread.currentThread().getName()+"买了生日蛋糕：价钱" + cake.price);

        }else if (Thread.currentThread()==joinThread){
            System.out.println(Thread.currentThread().getName()+"开始制作蛋糕，请耐心等待.........");
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            cake = new Cake("生日蛋糕",158);
            System.out.println(joinThread.getName()+"制作完毕");
        }

    }

    class Cake {
        int price;
        String name;

        public Cake(String name,int price) {
            this.price = price;
            this.name = name;
        }

    }

    public static void main(String[] args) {
        ThreadJoin threadJoin = new ThreadJoin();
        Thread customer = new Thread(threadJoin);
        customer.setName("顾客");
        Thread cakeMake = new Thread(threadJoin);
        cakeMake.setName("蛋糕");
        threadJoin.setThread(cakeMake);
        customer.start();
    }
}