两个线程每隔一秒钟交替打印5个数

标签：synchronized   wait   notify   executorservice   

package test.thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ExecutorTest {
 private static int i=0;
 private static final int PRINT_COUNT=5;
 private static final int CYCLE_COUNT=50;
 private static Object synchronizer=new Object();
 public static void main(String[] args) {
  ExecutorService service=Executors.newFixedThreadPool(2);
  service.execute(new Runnable(){
   public void run(){
    int j=0;
    synchronized(synchronizer){
     while(i++<CYCLE_COUNT){
      if(j++<PRINT_COUNT){
       System.out.println("1:"+i);
       if(j==PRINT_COUNT){
        System.out.println();
       }
      }else{
       i--;
       j=0;
       synchronizer.notify();
       try {
        Thread.sleep(1000);
        synchronizer.wait();
       } catch (InterruptedException e) {
        e.printStackTrace();
       }
      }
     }
     if(i>=50){
      synchronizer.notify();  //唤醒最后处于等待状态的线程
     }
    }
   }
  });
  service.execute(new Runnable(){
   public void run(){
    synchronized(synchronizer){
     int j=0;
     while(i++<CYCLE_COUNT){
      if(j++<PRINT_COUNT){
       System.out.println("2:"+i);
       if(j==PRINT_COUNT){
        System.out.println();
       }
      }else{
       i--;
       j=0;
       synchronizer.notify();
       try {
        Thread.sleep(1000);
        synchronizer.wait();
       } catch (InterruptedException e) {
        e.printStackTrace();
       }
      }
     }
     if(i>=50){
      synchronizer.notify(); //唤醒最后处于等待状态的线程
     }
    }
   }
  });
  service.shutdown();
 }
}

输出结构：

1:1
1:2
1:3
1:4
1:5

2:6
2:7
2:8
2:9
2:10

1:11
1:12
1:13
1:14
1:15

2:16
2:17
2:18
2:19
2:20

1:21
1:22
1:23
1:24
1:25

2:26
2:27
2:28
2:29
2:30

1:31
1:32
1:33
1:34
1:35

2:36
2:37
2:38
2:39
2:40

1:41
1:42
1:43
1:44
1:45

2:46
2:47
2:48
2:49
2:50

两个线程每隔一秒钟交替打印5个数

标签：synchronized   wait   notify   executorservice   

原文地址：http://blog.csdn.net/zhangheliang2010/article/details/44785789