本帖最后由 靓仔 于 2014-2-18 21:53 编辑
import java.util.concurrent.locks.*;
class ProducerConsumerDemo
{
public static void main(String args[])
{
Resource r=new Resource();
Producer p=new Producer(r);
Consumer c=new Consumer(r);
Thread t1=new Thread(p);
Thread t2=new Thread(c);
Thread t3=new Thread(p);
Thread t4=new Thread(c);
t1.start();
t2.start();
t3.start();
t4.start();
}
}
class Resource
{
private String name;
private int count = 1;
private boolean flag;
private Lock lock =new ReentrantLock();
private Condition condition =lock.newCondition();
private Condition condition_pro = lock.newCondition();
private Condition condition_con= lock.newCondition();
public void set(String name) throws InterruptedException
{
lock.lock();
try
{
while(flag)
condition_pro.await();
this.name = name+"---"+count++;
System.out.println(Thread.currentThread().getName()+"...生产者..."+this.name);
flag =true;
condition_con.signal();//condition.signalAll();
}
finally//释放锁的动作一定要执行
{
lock.unlock();
}
}
public synchronized void out()
{
lock.lock();
try
{
while(!flag)
try{condition_con.await();}catch(InterruptedException e){}
System.out.println(Thread.currentThread().getName()+"-------消费者------"+this.name);
flag=false;
condition_pro.signal();//condition.signalAll();
}
finally
{
lock.unlock();
}
}
}
class Producer implements Runnable
{
private Resource res;
Producer(Resource res)
{
this.res = res;
}
public void run()
{
while (true)
{
try
{
res.set("商品");
}
catch (InterruptedException e)
{
}
}
}
}
class Consumer implements Runnable
{
private Resource res;
Consumer(Resource res)
{
this.res = res;
}
public void run()
{
while (true)
{
res.out();
}
}
}
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