Java 多线程编程练习 多人接力跑1000米，跑过的选手不能再跑

 1 package cn.thread3;
 2 
 3 /**
 4  * @auther:：9527
 5  * @Description: 接力线程类
 6  * @program: shi_yong
 7  * @create: 2019-08-05 17:03
 8  */
 9 public class Relay implements Runnable {
10     private int num = 10;   //每个人跑的时候显示的数量
11     private int total = 1000;
12     private int count = 0;   //记数
13     private boolean boo = false;
14 
15     @Override
16     public synchronized void run() {
17 
18         //运行接力赛这个经过线程同步的方法
19         while (!boo) {
20             //如果跑满1000，就告知已经跑满1000米
21             if (total == 0) {
22                 System.out.println("已经跑满1000米");
23                 boo = true;
24                 break;
25             }
26             //运行接力的方法
27             relay();
28             total-=100;
29             try {
30                 Thread.sleep(500);
31             } catch (InterruptedException e) {
32                 e.printStackTrace();
33             }
34             //一个线程跑完要return掉
35             return;
36         }
37     }
38 
39 
40     public synchronized void relay(){
41         //如果没跑完就继续跑
42         if (total>0){
43             String thread = Thread.currentThread().getName();
44             //按提示输出
45             System.out.println(thread + "拿到了接力棒");
46             //设定单个选手的跑的变量
47 
48             for (int i = 1; i <= num; i++) {
49                 System.out.println(Thread.currentThread().getName() + "跑了" + (i * 10) + "米");
50                 count += 10;
51             }
52         }
53 
54     }
55 }

 1 package cn.thread3;
 2 
 3 /**
 4  * @auther:：9527
 5  * @Description: 程序入口
 6  * @program: shi_yong
 7  * @create: 2019-08-05 17:06
 8  */
 9 public class Test {
10     public static void main(String[] args) {
11         //实例化 线程类
12         Relay relay = new Relay();
13         //设定10个选手
14         Thread t1 = new Thread(relay,"1号选手");
15         Thread t2 = new Thread(relay,"2号选手");
16         Thread t3 = new Thread(relay,"3号选手");
17         Thread t4 = new Thread(relay,"4号选手");
18         Thread t5 = new Thread(relay,"5号选手");
19         Thread t6 = new Thread(relay,"6号选手");
20         Thread t7 = new Thread(relay,"7号选手");
21         Thread t8 = new Thread(relay,"8号选手");
22         Thread t9 = new Thread(relay,"9号选手");
23         Thread t10 = new Thread(relay,"10号选手");
24         Thread t11 = new Thread(relay,"11号选手");
25         //启动线程
26         t1.start();
27         t2.start();
28         t3.start();
29         t4.start();
30         t5.start();
31         t6.start();
32         t7.start();
33         t8.start();
34         t9.start();
35         t10.start();
36         t11.start();
37     }
38 }