java线程（生产者/消费者）

import java.util.ArrayList;

import java.util.List;

/**

 * 消费者/生产者模式 问题：

 *  1.一个共同容量确定的仓库，

 *  2.生产者只管生产物品放到仓库，若仓库库满则等待，若库未满，继续生产放入，

 *  3.消费者只管从仓库区物品，若库空则等待，若库未空，则取

 *  4.消费者和生产者，相互不关联

 *

 * 代码： 1.创建物品类 2.容量一定的仓库类（存取） 3.消费者类（继承Thread） 4.生产者类（继承Thread）

 *

 */

---

// 物品类

class Goods {

     public  int id;

    public Goods(){};

     public Goods(int id) {

            this. id= id;

     }

     public String toString() {

            return "goods" + id;

     }

}

---

// 仓库（物品类）

class Store {

     //用于存放goods的集合

     private Goods[] lst= new Goods[5];

     int index=0;

     //仓库容量的确定

     //放

     public synchronized void put(Goods goods) {

           System. out.println( "put"+ goods. id);

            while( index== lst. length){

                 try {

                      this.wait();

                } catch (InterruptedException e) {

                      // TODO Auto-generated catch block

                      e.printStackTrace();

                }    

           }

            this.notify();

            lst[ index]= goods;

            index++;   

     }

     //取

     public synchronized Goods take(){    

            while( index==0){

                 try {

                      this.wait();

                } catch (InterruptedException e) {

                      // TODO Auto-generated catch block

                      e.printStackTrace();

                }

           }

            index--;

            this.notify();

            return lst[ index];

           

     }

}

---

//生产者

class Producer extends Thread{

     private Store store;

     public void setStore(Store store){

            this. store= store;

     }

     @Override

     public void run() {

            //生产物品

                   for( int i=0; i<30; i++){    

                     Goods g= new Goods( i);

                    store.put( g);

                   }       

     }

     

}

---

//消费者

class Consumer extends   Thread {

     private Store store; 

     public void setStore(Store store){

            this. store= store;

     }

     @Override

     public void run() {

     

            for( int i=0; i<30; i++){

                System. out.println( "take"+ store.take(). id);

     

        }

     }

     

}

---

//测试

class  ProduceConsume {

     

     

     public static void main(String[] args) {

         Store store= new Store();

           Producer producer= new Producer();

           Consumer consumer= new Consumer();

            producer.setStore( store);

            consumer.setStore( store);

            producer.start();

            consumer.start();    

     }

     

}