生产者与消费者问题

来源：互联网发布：Ubuntu 软件怎么打不开编辑：程序博客网时间：2024/05/01 17:09

最近在看java并发编程，生产者与消费者是个经典题目，5年前去百度面试的时候，让我当场写出这个程序，今天我就回顾一下，这里涉及到几个点，一个生产者，一个消费者，一个馒头实体类，一个馒头筐类，一个main方法类，记住这几个点，生产者和消费者程序就很好写了，代码如下:

/* * 生产者与消费者问题 */public class ProduceConsume {    public static void main(String[] args) {        SyncStack ss = new SyncStack();        Produce pd = new Produce(ss);        Consume cs = new Consume(ss);        Thread t1 = new Thread(pd);        Thread t2 = new Thread(cs);        t1.start();        t2.start();    }}/* * 馒头实体类 */class ManTou {    private int id;    public ManTou(int id) {        this.id = id;    }    public int getId() {        return this.id;    }    @Override    public String toString() {        // TODO Auto-generated method stub        return "ManTou " + getId();    }}/* * 馒头框类 */class SyncStack {    int index = 0;    ManTou[] mtArray = new ManTou[6];    public synchronized void push(ManTou mt) {        while (index == mtArray.length) {            try {                this.wait();            } catch (InterruptedException e) {                e.printStackTrace();            }        }        this.notify();        mtArray[index] = mt;        index++;        System.out.println("生产了" + mt);    }    public synchronized ManTou pop() {        while (index == 0) {            try {                this.wait();            } catch (InterruptedException e) {                e.printStackTrace();            }        }        this.notify();        index--;        System.out.println("消费了" + mtArray[index]);        return mtArray[index];    }}/* * 生产者 */class Produce implements Runnable {    SyncStack ss = null;    public Produce(SyncStack ss) {        this.ss = ss;    }    @Override    public void run() {        // TODO Auto-generated method stub        for (int i = 0; i < 20; i++) {            ManTou mt = new ManTou(i);            if (ss != null) {                ss.push(mt);            }            try {                Thread.sleep(10);            } catch (InterruptedException e) {                e.printStackTrace();            }        }    }}/* * 消费者 */class Consume implements Runnable {    SyncStack ss = null;    public Consume(SyncStack ss) {        this.ss = ss;    }    @Override    public void run() {        // TODO Auto-generated method stub        for (int i = 0; i < 20; i++) {            if (ss != null) {                ss.pop();            }            try {                Thread.sleep(1000);            } catch (InterruptedException e) {                e.printStackTrace();            }        }    }}

以上代码，凭记忆手工敲的，如有问题，欢迎指正。

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