java 多线程 2

Posted 2020-08-28 zhuzhuqwa

 1 package com.imooc.base;
 2 
 3 public class Stage extends Thread {
 4 
 5     public static void main(String[] args) {
 6         new Stage().run();
 7     }
 8     public void run(){
 9         
10         System.out.println("欢迎观看隋唐演义！");
11         
12         try {
13             Thread.sleep(10000);
14         } catch (InterruptedException e1) {
15             e1.printStackTrace();
16         }
17         
18         System.out.println("大幕徐徐拉开");
19         
20         ArmyRunnable armyTaskOfSuiDynasty = new ArmyRunnable();
21         ArmyRunnable armyTaskOfRevolt = new ArmyRunnable();
22         
23         Thread armyOfSuiDynasty = new Thread(armyTaskOfSuiDynasty,"隋军");
24         Thread armyOfRevolt = new Thread(armyTaskOfRevolt,"农民起义军");
25         
26         armyOfSuiDynasty.start();
27         armyOfRevolt.start();
28         
29         try {
30             Thread.sleep(50);
31         } catch (InterruptedException e) {
32             e.printStackTrace();
33         }
34         
35         armyTaskOfSuiDynasty.keepRunning = false;
36         armyTaskOfRevolt.keepRunning = false;
37         
38         try {
39             armyOfRevolt.join();
40         } catch (InterruptedException e) {
41             e.printStackTrace();
42         }
43         
44         System.out.println("正当双方激战正酣，半路杀出了个程咬金");
45         
46         Thread mrCheng = new KeyPersonThread();
47         mrCheng.setName("程咬金");
48         
49         System.out.println("程咬金的理想就是结束战争，使百姓安居乐业！");
50         
51         armyTaskOfSuiDynasty.keepRunning = false;
52         armyTaskOfRevolt.keepRunning = false;        
53         
54         try {
55             Thread.sleep(2000);
56         } catch (InterruptedException e) {
57             e.printStackTrace();
58         }
59         
60         mrCheng.start();
61         
62         try {
63             mrCheng.join();
64         } catch (InterruptedException e) {
65             e.printStackTrace();
66         }
67         
68         System.out.println("战争结束，人民安居乐业，程先生实现了自己的人生梦想！");
69         System.out.println("谢谢观看");
70     }
71 }

 1 package com.imooc.base;
 2 
 3 public class KeyPersonThread extends Thread {
 4     public void run(){
 5         System.out.println(Thread.currentThread().getName()+"开始了战斗！");
 6         
 7         for(int i=0;i<10;i++){
 8             System.out.println(Thread.currentThread().getName()+"左突右杀，攻击隋军。。。");
 9         }
10         
11         System.out.println(Thread.currentThread().getName()+"结束了战斗！");
12     }
13 }

 1 package com.imooc.base;
 2 
 3 public class ArmyRunnable implements Runnable {
 4     //volatile保证了线程可以正确的读取其他线程写入的值
 5     //可见性 参考JMM,happens-before原则
 6     volatile boolean keepRunning = true;
 7 
 8     public void run() {
 9         while(keepRunning){
10             for(int i=0;i<5;i++){
11                 System.out.println(Thread.currentThread().getName()+"进攻方{"+ i +"}");
12                 
13                 Thread.yield();
14             }
15             
16         }
17         System.out.println(Thread.currentThread().getName()+"结束了战斗！");
18     }
19 
20 }