生产者-消费者（java并发）

首先是Productor.java

package org.iteye.bbjava.currency.pc;


public class Productor implements Runnable {

	CQueue<String> queue;
	int i = 0;

	public Productor(CQueue<String> queue) {
		this.queue = queue;
	}

	@Override
	public void run() {
		while (!Thread.interrupted()) {
			if (queue.size() > 200) {
					System.out.println("仓库满了，productor 休息一下");
			} else {

				try {
					System.out.println(".");
					Thread.sleep(500);
					queue.add(""+i++);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

			}

		}
	}


}

接下来是仓库 CQueue.java

package org.iteye.bbjava.currency.pc;

import java.util.LinkedList;
import java.util.Queue;

public class CQueue<T> {

	public Queue<T> queue = new LinkedList<T>(); ;

	public CQueue(){

	}

	public synchronized T poll() { //consumer 从仓库取出产品
		if(queue.size() <= 0 ){
			try {
				System.out.println("仓库空了，里面没东西，consumer 休息一下 size:"+queue.size());
				wait(1200);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			notify();
		}
		return queue.poll();
	}

	public synchronized void add(T elem){
		if(queue.size() >= 200){
			try {
				System.out.println("仓库满了，容不下更多东西了，productor 休息一下 size:"+queue.size());
				wait(1200);
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		}else{
			queue.add(elem);
			notify();
		}
	}

	public int size(){
		return queue.size(); 
	}

}

再者是Consumer.java

package org.iteye.bbjava.currency.pc;

import java.util.Queue;

public class Consumer implements Runnable {

	CQueue<String> queue;


	@Override
	public void run() {
		while (!Thread.interrupted()) {
			if (queue.size() < 0) {
				System.out.println("仓库空了，consumer 休息");

			} else {
				try {
					Thread.sleep(500);
					System.out.println(this.consume());
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

			}

		}

	}

	public Consumer(CQueue<String> queue) {
		this.queue = queue ;
	}

	public String consume(){
		return this.queue.poll();
	}
}

客户端 TestProductorAndConsumer .java

package org.iteye.bbjava.currency.pc;

public class TestProductorAndConsumer {

	public static void main(String []args){

		CQueue<String> cq = new CQueue<String>();
		System.out.println(cq.size());
		Thread t2 = new Thread(new Productor(cq));
		Thread t3 = new Thread(new Productor(cq));
		Thread t1 = new Thread(new Consumer(cq));
		Thread t4 = new Thread(new Consumer(cq));

		t4.start();
		t3.start();
		t2.start();
		t1.start();


	}
}

生产者与消费者，纯回顾一下，手写的，主要是加深印象。

待整理……