1 /**
 2  *    生产者
 3  */
 4 public class P {
 5
 6     private MyStack stack;
 7
 8     public P(MyStack stack) {
 9         this.stack = stack;
10     }
11
12     public void pushService() {
13         stack.push();
14     }
15 }

 1 /**
 2  *    消费者
 3  */
 4 public class C {
 5
 6     private MyStack stack;
 7
 8     public C(MyStack stack) {
 9         this.stack = stack;
10     }
11
12     public void popService() {
13         System.out.println("pop = " + stack.pop());
14     }
15 }

 1 /**
 2  *    模拟栈
 3  */
 4 public class MyStack {
 5
 6     private List<Object> list = new ArrayList<>();
 7
 8     public synchronized void push() {
 9         try {
10             while(list.size() == 1) {
11                 this.wait();
12             }
13             list.add(""+Math.random());
14             this.notifyAll();
15             System.out.println("push:" + list.size());
16         } catch (InterruptedException e) {
17             e.printStackTrace();
18         }
19     }
20
21     public synchronized String pop() {
22         String value = "";
23         try {
24             while(list.size() == 0) {
25                 System.out.println("pop 操作中：" + Thread.currentThread().getName() + "wait状态");
26                 this.wait();
27             }
28             value = ""+list.get(0);
29             list.remove(0);
30             this.notifyAll();
31             System.out.println("pop:" + list.size());
32         } catch (InterruptedException e) {
33             e.printStackTrace();
34         }
35         return value;
36     }
37 }

 1 /**
 2  *    生产者线程
 3  */
 4 public class P_Thread extends Thread {
 5
 6     private P p;
 7
 8     public P_Thread(P p) {
 9         this.p = p;
10     }
11
12     @Override
13     public void run() {
14         while (true) {
15             p.pushService();
16         }
17     }
18 }

 1 /**
 2  *    消费者线程
 3  */
 4 public class C_Thread extends Thread {
 5
 6     private C c;
 7
 8     public C_Thread(C c) {
 9         this.c = c;
10     }
11
12     @Override
13     public void run() {
14         while (true) {
15             c.popService();
16         }
17     }
18 }

 1 /**
 2  *    测试类
 3  */
 4 public class Run {
 5
 6     public static void main(String[] args) {
 7         MyStack stack = new MyStack();
 8         //一个生产者
 9         P p = new P(stack);
10         //多个消费者
11         C c1 = new C(stack);
12         C c2 = new C(stack);
13         C c3 = new C(stack);
14
15         //一个生产者线程
16         P_Thread pThread = new P_Thread(p);
17         //多个消费者线程
18         C_Thread cThread1 = new C_Thread(c1);
19         C_Thread cThread2 = new C_Thread(c2);
20         C_Thread cThread3 = new C_Thread(c3);
21
22         //启动
23         pThread.start();
24         cThread1.start();
25         cThread2.start();
26         cThread3.start();
27     }
28 }