JAVA多线程通信

JAVA多线程通信

package com.frank.thread;
/**
 * author:pengyan
 * date:Jun 16, 2011
 * file:ProducerAndCustomerTest.java
 */
public class ProducerAndCustomerTest {
	public static void main(String[] args) {
		//create an object
		Queue q=new Queue();
		Productor p=new Productor(q);
		Customer c=new Customer(q);
		//p and c shared q
		p.start();
		c.start();
	}
}
class Customer extends Thread{
	Queue q;
	public Customer(Queue q) {
		this.q=q;
	}
	@Override
	public void run() {
		while (q.value<10) {//get the value
			System.out.println("Customer get "+q.get());
		}
	}
}
class Productor extends Thread{
	Queue q;
	public Productor(Queue q) {
		this.q=q;
	}
	@Override
	public void run() {
		for (int i = 1; i <=10; i++) {
			q.put(i);//product and show info
			System.out.println("Productor put "+i);
		}
	}
}
class Queue{
	int value;//count the mumber
	boolean bFull=false;//whether the cup is full
	public synchronized void  put(int i){
		if (!bFull) {
			value=i;//fill the cup
			bFull=true;//it is full
			notifyAll();//notify other thread
			try {
				wait();//wait.......
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
	}
	public synchronized int get(){
		if (!bFull) {
			try {
				wait();//if not full,wait until full
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}
		bFull=false;//after got the cup is empty
		notifyAll();//notify the Productor to put
		return value;//return the value
	}
}

 

控制台打印：

Productor put 1

Customer get 1

Customer get 2

Productor put 2

Customer get 3

Productor put 3

Customer get 4

Productor put 4

Customer get 5

Productor put 5

Productor put 6

Customer get 6

Productor put 7

Customer get 7

Customer get 8

Productor put 8

Customer get 9

Productor put 9

Customer get 10

Productor put 10