生产者/消费者问题

  1 package cn.lyog.javase;
  2 
  3 //店员
  4 class Clerk {
  5     int product;
  6 
  7     public synchronized void addProduct() {
  8         if (product >= 20) {
  9             try {
 10                 wait();
 11             } catch (InterruptedException e) {
 12                 e.printStackTrace();
 13             }
 14         } else {
 15             product++;
 16             System.out.println(Thread.currentThread().getName() + "生产了第" + product + "个产品");
 17             notifyAll();
 18         }
 19     }
 20 
 21     public synchronized void ConsumeProduct() {
 22         if (product <= 0) {
 23             try {
 24                 wait();
 25             } catch (InterruptedException e) {
 26                 e.printStackTrace();
 27             }
 28         } else {
 29             System.out.println(Thread.currentThread().getName() + "消费了第" + product + "个产品");
 30             product--;
 31             notifyAll();
 32         }
 33     }
 34 }
 35 
 36 // 生产者
 37 class Productor implements Runnable {
 38     Clerk clerk;
 39 
 40     public Productor(Clerk clerk) {
 41         super();
 42         this.clerk = clerk;
 43     }
 44 
 45     public void run() {
 46         while (true) {
 47             try {
 48                 Thread.currentThread();
 49                 Thread.sleep(100);
 50             } catch (InterruptedException e) {
 51                 e.printStackTrace();
 52             }
 53             clerk.addProduct();
 54         }
 55     }
 56 
 57 }
 58 
 59 // 消费者
 60 class Consumer implements Runnable {
 61     Clerk clerk;
 62 
 63     public Consumer(Clerk clerk) {
 64         super();
 65         this.clerk = clerk;
 66     }
 67 
 68     @Override
 69     public void run() {
 70         while (true) {
 71             try {
 72                 Thread.currentThread();
 73                 Thread.sleep(60);
 74             } catch (InterruptedException e) {
 75                 e.printStackTrace();
 76             }
 77             clerk.ConsumeProduct();
 78         }
 79     }
 80 }
 81 
 82 public class TestProduceConsume {
 83 
 84     public static void main(String[] args) {
 85         Clerk clerk = new Clerk();
 86         Productor pd = new Productor(clerk);
 87         Consumer cs = new Consumer(clerk);
 88 
 89         Thread t1 = new Thread(pd);
 90         Thread t2 = new Thread(pd);
 91         Thread t3 = new Thread(cs);
 92 
 93         t1.setName("生产者1");
 94         t2.setName("生产者2");
 95         t3.setName("消费者1");
 96 
 97         t1.start();
 98         t2.start();
 99         t3.start();
100 
101     }
102 
103 }