生产者消费者模型--2个线程

package comm;

public class ProducerConsumerDemo {

public static void main(String[] args) {
Resource r = new Resource();
Producer pro = new Producer(r);
Consumer con = new Consumer(r);

Thread t1 = new Thread(pro);
Thread t2 = new Thread(con);

t1.start();
t2.start();
}
}

class Resource {
private String name;
private int count = 1;
private boolean flag = false;

public synchronized void set(String name) {
if (flag)
try {
this.wait();
} catch (InterruptedException e) {
}
this.name = name + "==" + (count++);
System.out.println(Thread.currentThread().getName() + "==producer=="
+ this.name);
flag = true;
this.notify();
}

public synchronized void out() {
if (!flag)
try {
this.wait();
} catch (InterruptedException e) {
}
System.out.println(Thread.currentThread().getName() + "====consumer===="
+ this.name);
flag = false;
this.notify();
}
}

class Producer implements Runnable {
private Resource res;

Producer(Resource res) {
this.res = res;
}

public void run() {
while (true)
res.set("+商品+");
}
}

class Consumer implements Runnable {
private Resource res;

Consumer(Resource res) {
this.res = res;
}

public void run() {
while (true)
res.out();
}
}