Condition实现一个生产者一个消费者

Condition实现一个生产者一个消费者，实现一对一交替打印：

　　

 1 import java.util.concurrent.locks.Condition;
 2 import java.util.concurrent.locks.ReentrantLock;
 3 
 4 /**
 5  *    生产消费逻辑
 6  */
 7 public class MyService {
 8     
 9     private ReentrantLock lock = new ReentrantLock();
10     private Condition condition = lock.newCondition();
11     private boolean hasValue = false;
12     
13     public void set() {
14         try {
15             lock.lock();
16             while (hasValue) {
17                 condition.await();
18             }
19             System.out.println("☆");
20             hasValue = true;
21             condition.signal();
22         } catch (InterruptedException e) {
23             e.printStackTrace();
24         }finally {
25             lock.unlock();
26         }
27     }
28     
29     public void get() {
30         try {
31             lock.lock();
32             while(!hasValue) {
33                 condition.await();
34             }
35             System.out.println("★");
36             hasValue = false;
37             condition.signal();
38         } catch (InterruptedException e) {
39             e.printStackTrace();
40         }finally {
41             lock.unlock();
42         }
43     }
44 }
 1 /**
 2  *    生产者线程
 3  */
 4 public class MyThreadA extends Thread{
 5     private MyService service;
 6     
 7     public MyThreadA(MyService service) {
 8         this.service = service;
 9     }
10     
11     @Override
12     public void run() {
13         for (int i = 0; i < Integer.MAX_VALUE; i++) {
14             service.set();
15         }
16     }
17 }
 1 /**
 2  *    消费者线程
 3  */
 4 public class MyThreadB extends Thread{
 5     private MyService service;
 6     
 7     public MyThreadB(MyService service) {
 8         this.service = service;
 9     }
10     
11     @Override
12     public void run() {
13         for (int i = 0; i < Integer.MAX_VALUE; i++) {
14             service.get();
15         }
16     }
17 }
 1 /**
 2  *    交替打印测试类
 3  */
 4 public class Run {
 5 
 6     public static void main(String[] args) {
 7         MyService service = new MyService();
 8         
 9         MyThreadA a = new MyThreadA(service);
10         a.start();
11         MyThreadB b = new MyThreadB(service);
12         b.start();
13     }
14 }

运行结果如下：

　　

 

posted @ 2018-08-31 16:58  为你编程  阅读(701)  评论(0)  编辑  收藏  举报