7_02_030421217.java

开始学JAVA老师布置的作业一学期的哦希望新手有用

//书本的太难做不出来
//做了个生产者-消费者同步访问队列里临界资源的例子
class Test
{
	public static void main(String[] args)
	{
		Queue q = new Queue();
		Producer p = new Producer(q);
		Consumer c = new Consumer(q);
		new Thread(p).start();

        new Thread(c).start();

	}
}

class Queue
{
	//int value;
	int value1,value2,value3;
	boolean bFull = false;
	public synchronized void put(int i)
	{
		if(!bFull)
		{
	
			value1 = i;
			
			bFull = true;
			notify();
		}
		try
		{	
			wait();
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}
	public synchronized int get()
	{
		if(!bFull)
		{
			try
			{
				wait();	
			}
			catch(Exception e)
			{
				e.printStackTrace();
			}
		}
		bFull = false;
		notify();
	    return value1;
	}
}

class Producer extends Thread
{
	Queue q;
	Producer(Queue q)
	{
		this.q = q;
	}
	public void run()
	{
		for(int i=0;i<5;i++)
		{
			q.put(i);
			System.out.println("Producer:"+getName()+" put "+i);
		}	
	}
}

class Consumer extends Thread
{
	Queue q;
	Consumer(Queue q)
	{
		this.q = q;
	}
	public void run()
	{
		while(true)
		System.out.println("Consumer:"+getName()+" get "+q.get());
	}
}