public class ProducerConsumer {public static void main (String []args){	SycStack ss=new SycStack();	Producer p=new Producer(ss);	Consumer c=new Consumer(ss);	new Thread(p).start();	new Thread(c).start();}}class Wotou{	int id=0;	public Wotou(int id){		this.id=id;	}	public String toString (){		return "Wotou :"+id;	}}class SycStack{	int index=0;	Wotou [] arrWotou=new Wotou[6];	public synchronized void push(Wotou wt){		while(index==arrWotou.length){			try{this.wait();			}catch(InterruptedException e){				e.printStackTrace();			}			}this.notify();		arrWotou[index]=wt;		index++;	}	public synchronized Wotou pop(){		while(index==0){			try {				this.wait();			}catch(InterruptedException e){				e.printStackTrace();			}		}this.notify();		index--;		return arrWotou[index];			}}class Producer implements Runnable{	SycStack ss=null;	Producer (SycStack ss){		this.ss=ss;			}	public void run(){		for(int i=0;i<20;i++){			Wotou wt =new Wotou(i);			ss.push(wt);			System.out.println("生产了:"+wt);			try{			Thread.sleep(1000);			}catch(InterruptedException e){				e.printStackTrace();			}		}	}}class Consumer implements Runnable{	SycStack ss=null;Consumer (SycStack ss){		this.ss=ss;			}	public void run(){		for(int i=0;i<20;i++){			Wotou wt =ss.pop();				System.out.println("消费了："+wt);	try{		Thread.sleep(1000);		}catch(InterruptedException e){			e.printStackTrace();		}					}	}}