/*
//生产者，消费者问题（多个生产者、消费者）
class Resource
{
private String name;
private int count=1;
private boolean flag=false;
public synchronized void set(String name)
{
while(flag) //由if换成while
try{wait();}catch(Exception e){}
this.name=name+"----"+count++;
System.out.println(Thread.currentThread().getName()+"----生产者----"+this.name);
flag=true;
this.notifyAll(); //由notify换成notifyAll
}
public synchronized void out()
{
while(!flag) //由if换成while
try{wait();}catch(Exception e){}
System.out.println(Thread.currentThread().getName()+"----消费者---------"+this.name);
flag=false;
this.notifyAll();//由notify换成notifyAll
}
}
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();
}
}
class Test
{
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();
}
}
*/
/*
//jdk1.5中提供了多线程升级解决方案
//将同步synchronized替换成现实Lock操作
//将Object中的wait，notify，notifyAll替换成Condition对象
//该示例中，实现了本方只唤醒对方操作
import java.util.concurrent.locks.*;
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) //由if换成while
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)
try
{
res.set("+商品+");
}
catch (Exception e)