produce_consume.java

java实现生产者与消费者双线程问题 在JDK6.0上测试通过

import java.util.*;
class HoldInt 
{ 
	private int sharedInt; 
	private boolean writeAble=true;
	private LinkedList<Integer> list = new LinkedList<Integer>();
	public synchronized void set(int val) 
	{ 
		while(!writeAble || list.size() >= 20) 
		{
			try
			{
				System.out.println("Produce Waiting......");
				wait();
			}		
			catch(InterruptedException e){} 
		} 
	
		writeAble=false; 
		list.addLast(val); 
		System.out.println("Produce Finished......"+val);
		notify();
	} 
 
	public synchronized int get() 
	{
		while(writeAble || list.size() == 0) 
	 	{
			try
			{
				System.out.println("Consume Wainting......");
				wait(); 
	 		} 		
	 		catch(InterruptedException e){} 
	 	} 

		sharedInt = list.getFirst().intValue();
		list.removeFirst();
		writeAble=true;
		System.out.println("Consume Finished......"+sharedInt);
		notify();
	 	return sharedInt; 
	} 
} 
class ProduceInt extends Thread 
{ 
	private HoldInt hi; 
	public ProduceInt(HoldInt hiForm) 
	{
		 hi=hiForm; 
	} 
	public void run() 
	{
		for(int i=1;i<=400;i++) 
		{
		 	hi.set(i);  
		} 
	}
} 
class ConsumeInt extends Thread 
{
	private HoldInt hi; 
	public ConsumeInt(HoldInt hiForm) 
	{
		hi=hiForm; 
	} 
	public void run() 
	{
		for(int i=1;i<=400;i++) 
		{
			hi.get(); 
		}
	}
} 
class produce_consume 
{ 
	public static void main(String args[]) 
	{ 
		HoldInt h=new HoldInt(); 
		ProduceInt p=new ProduceInt(h); 
		ConsumeInt c=new ConsumeInt(h); 
		p.start(); 
		c.start(); 
	}
}