import java.util.concurrent.locks.*;
class ProduceConsumerDemo
{
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(pro);
Thread t3=new Thread(con);
Thread t4=new Thread(con);
t1.start();
t2.start();
t3.start();
t4.start();
}
}
class Resource
{
private String name;
private int count=1;
private boolean flag=false;
private Lock lock=new ReentrantLock();
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();
}
finally
{
lock.unlock();
}
}
public void out()throws InterruptedException
{
lock.lock();
try
{
while(!flag)
condition_con.await();
System.out.println(Thread.currentThread().getName()+",,,、、、、消费者、、、"+this.name);
flag=false;
condition_pro.signal();
}
finally
{
lock.unlock();
}
}
}
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();
}
}
}
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