Java 生产者/消费者问题

package com.company;

public class ProducerConsumerTest {

    public static void main(String[] args) {
        CubbyHole c = new CubbyHole();
        Producer p1 = new Producer(c,1);
        Consumer c1 = new Consumer(c,1);
        p1.start();
        c1.start();
    }
}


class CubbyHole{
    private int contents;
    private boolean available = false;
    public synchronized int get(){
        while (!available){
            try {
                wait();
            }catch (InterruptedException e ){

            }
        }
        available = false;
        notifyAll();
        return contents;
    }

    public synchronized void put(int value){
        while (available){
            try {
                wait();
            }catch (InterruptedException e){

            }
        }
        contents = value;
        available = true;
        notifyAll();
    }

}

class  Consumer extends Thread{
    private CubbyHole cubbyhole;
    private int number;
    public Consumer(CubbyHole c,int number){
        cubbyhole = c;
        this.number = number;
    }

    public void run(){
        int value = 0;
        for (int i=0;i<10;i++){
            value = cubbyhole.get();
            System.out.println("消费者 #" + this.number+ " got: " + value);
        }
    }

}

class Producer extends Thread {
    private CubbyHole cubbyhole;
    private int number;

    public Producer(CubbyHole c, int number) {
        cubbyhole = c;
        this.number = number;
    }

    public void run() {
        for (int i = 0; i < 10; i++) {
            cubbyhole.put(i);
            System.out.println("生产者 #" + this.number + " put: " + i);
            try {
                sleep((int)(Math.random() * 100));
            } catch (InterruptedException e) { }
        }
    }
}