多线程：生产者与消费者经典问题（马士兵）

来源：互联网发布：中铁宝桥网络大学编辑：程序博客网时间：2024/06/12 18:55
package houy.qing.demo;public class ProducerSummer {    public static void main(String[] args) {        SyncStack ss = new SyncStack();        new Thread(new Producer(ss)).start();        new Thread(new Consumer(ss)).start();    }}class WoTo{    int id;    public WoTo(int id){        this.id = id;    }    public String toString() {        return "woto :" + id;    }}class SyncStack{    int index = 0;    WoTo[] arrWoTo = new WoTo[6];    public synchronized void push(WoTo wt){        while (index == arrWoTo.length) {            try {                System.out.println("系统当前时间：" + System.currentTimeMillis());                this.wait(5*1000);            } catch (InterruptedException e) {                e.printStackTrace();            }        }        System.out.println("系统当前时间：" + System.currentTimeMillis());        this.notify();        arrWoTo[index] = wt;        System.out.println("生产："+ wt);        index++;    }    public synchronized WoTo pop(){        while (index == 0) {            try {                this.wait();            } catch (InterruptedException e) {                e.printStackTrace();            }        }        this.notify();        index--;        return arrWoTo[index];    }       }class Producer implements Runnable{    SyncStack ss = null;    public Producer(SyncStack ss) {        this.ss = ss;    }    @Override    public void run() {        for (int i = 0; i < 20; i++) {            WoTo wt = new WoTo(i);            ss.push(wt);            try {                Thread.sleep((int)Math.random()*200);            } catch (InterruptedException e) {                e.printStackTrace();            }        }    }}class Consumer implements Runnable{    SyncStack ss = null;    public Consumer(SyncStack ss) {        this.ss = ss;    }    @Override    public void run() {        for (int i = 0; i < 20; i++) {            WoTo wtTo = ss.pop();            System.out.println("消费：" + wtTo);            try {                Thread.sleep((int)Math.random()*1000);            } catch (InterruptedException e) {                e.printStackTrace();            }        }    }}
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