生产者和消费者问题

来源：互联网发布：ubuntu安装ftp server 编辑：程序博客网时间：2024/05/10 11:56

package 生产者消费者;public class ProducerConsumerTest {    public static void main(String[] args) {        PublicResource resource = new PublicResource();        new Thread(new ProducerThread(resource)).start();        new Thread(new ConsumerThread(resource)).start();        new Thread(new ProducerThread(resource)).start();        new Thread(new ConsumerThread(resource)).start();        new Thread(new ProducerThread(resource)).start();        new Thread(new ConsumerThread(resource)).start();    }}

package 生产者消费者;/** * 生产者线程，负责生产公共资源 * @author dream * */public class ProducerThread implements Runnable{    private PublicResource resource;    public ProducerThread(PublicResource resource) {        this.resource = resource;    }    @Override    public void run() {        while (true) {            try {                Thread.sleep((long) (Math.random() * 1000));            } catch (InterruptedException e) {                e.printStackTrace();            }            resource.increase();        }    }}

package 生产者消费者;/** * 消费者线程，负责消费公共资源 * @author dream * */public class ConsumerThread implements Runnable{    private PublicResource resource;    public ConsumerThread(PublicResource resource) {        this.resource = resource;    }    @Override    public void run() {        while (true) {            try {                Thread.sleep((long) (Math.random() * 1000));            } catch (InterruptedException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }            resource.decrease();        }    }}

package 生产者消费者;/** * 公共资源类 * @author dream * */public class PublicResource {    private int number = 0;    private int size = 10;    /**     * 增加公共资源     */    public synchronized void increase()    {        while (number >= size) {            try {                wait();            } catch (InterruptedException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }        }        number++;        System.out.println("生产了1个，总共有" + number);        notifyAll();    }    /**     * 减少公共资源     */    public synchronized void decrease()    {        while (number <= 0) {            try {                wait();            } catch (InterruptedException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }        }        number--;        System.out.println("消费了1个，总共有" + number);        notifyAll();    }}

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