wait/notify实现生产消费者模式

存储类GoodStorage：

import java.util.ArrayList;import java.util.List;public class GoodStorage {private static final int SIZE = 2;private List<Good> storage = new ArrayList<Good>(SIZE);public void add(Good good){synchronized (storage){while (storage.size() >= SIZE){try {System.out.println(Thread.currentThread().getName() + "------>product wait.... now ListSIze:" +storage.size());storage.wait();} catch (InterruptedException e) {e.printStackTrace();}}storage.add(good);System.out.println(Thread.currentThread().getName() + "------>product :"+ good.toString() + ", now ListSIze:" +storage.size());storage.notifyAll();}}public void remove(){synchronized (storage){while (storage.size() == 0){try {System.out.println(Thread.currentThread().getName() + "------>consume wait....  now ListSIze:" +storage.size());storage.wait();} catch (InterruptedException e) {e.printStackTrace();}}Good good = storage.get(0);storage.remove(0);System.out.println(Thread.currentThread().getName() + "------------------------------------>consume :"+ good.toString()+ ", now ListSIze:" +storage.size());storage.notifyAll();}}}class Good {public long id;public Good(long id) {this.id = id;}public String toString() {return String.format("Good-%d", this.id);}}

生产者：

import java.util.Random;import java.util.concurrent.atomic.AtomicInteger;class Producter implements Runnable {private static AtomicInteger ato = new AtomicInteger(0);private GoodStorage store;public Producter(GoodStorage store ){this.store = store;}public void run() {while(true){try {Thread.currentThread().sleep(new Random().nextInt(1000));// queue.put(new Good(System.currentTimeMillis()));store.add(new Good(ato.incrementAndGet()));} catch (InterruptedException e) {e.printStackTrace();}}}}

消费者：

import java.util.Random;class Consumer implements Runnable {private GoodStorage store;public Consumer(GoodStorage store ){this.store = store;}public void run() {while(true){try {Thread.currentThread().sleep(new Random().nextInt(1000));store.remove();} catch (InterruptedException e) {e.printStackTrace();}}}}

运行主类：

import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class Main {static ExecutorService pool = Executors.newCachedThreadPool();public static void main(String[] args) {GoodStorage store = new GoodStorage();pool.execute(new Producter(store));pool.execute(new Producter(store));pool.execute(new Producter(store));pool.execute(new Consumer(store));pool.execute(new Consumer(store));}}

运行结果：

pool-1-thread-4------>consume wait....  now ListSIze:0pool-1-thread-1------>product :Good-1, now ListSIze:1pool-1-thread-4------------------------------------>consume :Good-1, now ListSIze:0pool-1-thread-3------>product :Good-2, now ListSIze:1pool-1-thread-1------>product :Good-3, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-2, now ListSIze:1pool-1-thread-1------>product :Good-5, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-3, now ListSIze:1pool-1-thread-1------>product :Good-7, now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-5, now ListSIze:1pool-1-thread-3------>product :Good-4, now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-7, now ListSIze:1pool-1-thread-1------>product :Good-9, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-4, now ListSIze:1pool-1-thread-2------>product :Good-6, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-9, now ListSIze:1pool-1-thread-3------>product :Good-8, now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-6, now ListSIze:1pool-1-thread-3------>product :Good-10, now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-8, now ListSIze:1pool-1-thread-2------>product :Good-11, now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-10, now ListSIze:1pool-1-thread-2------>product :Good-14, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-11, now ListSIze:1pool-1-thread-1------>product :Good-12, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-14, now ListSIze:1pool-1-thread-3------>product :Good-13, now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-12, now ListSIze:1pool-1-thread-2------>product :Good-15, now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-13, now ListSIze:1pool-1-thread-5------------------------------------>consume :Good-15, now ListSIze:0pool-1-thread-3------>product :Good-16, now ListSIze:1pool-1-thread-1------>product :Good-17, now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-16, now ListSIze:1pool-1-thread-2------>product :Good-18, now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-17, now ListSIze:1pool-1-thread-5------------------------------------>consume :Good-18, now ListSIze:0pool-1-thread-3------>product :Good-19, now ListSIze:1pool-1-thread-2------>product :Good-20, now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-19, now ListSIze:1pool-1-thread-3------>product :Good-21, now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-20, now ListSIze:1pool-1-thread-1------>product :Good-22, now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-21, now ListSIze:1pool-1-thread-4------------------------------------>consume :Good-22, now ListSIze:0pool-1-thread-2------>product :Good-23, now ListSIze:1pool-1-thread-3------>product :Good-24, now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-23, now ListSIze:1pool-1-thread-3------>product :Good-27, now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-24, now ListSIze:1pool-1-thread-3------>product :Good-28, now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-27, now ListSIze:1pool-1-thread-3------>product :Good-29, now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-28, now ListSIze:1pool-1-thread-1------>product :Good-25, now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-29, now ListSIze:1pool-1-thread-2------>product :Good-26, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-25, now ListSIze:1pool-1-thread-1------>product :Good-31, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-26, now ListSIze:1pool-1-thread-2------>product :Good-32, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-31, now ListSIze:1pool-1-thread-1------>product :Good-33, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-32, now ListSIze:1pool-1-thread-3------>product :Good-30, now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-33, now ListSIze:1pool-1-thread-3------>product :Good-35, now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-30, now ListSIze:1pool-1-thread-1------>product :Good-36, now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-35, now ListSIze:1pool-1-thread-2------>product :Good-34, now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-36, now ListSIze:1pool-1-thread-1------>product :Good-37, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-34, now ListSIze:1pool-1-thread-2------>product :Good-40, now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-37, now ListSIze:1pool-1-thread-3------>product :Good-38, now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-4------------------------------------>consume :Good-40, now ListSIze:1pool-1-thread-2------>product :Good-41, now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2pool-1-thread-5------------------------------------>consume :Good-38, now ListSIze:1pool-1-thread-1------>product :Good-39, now ListSIze:2pool-1-thread-3------>product wait.... now ListSIze:2pool-1-thread-2------>product wait.... now ListSIze:2pool-1-thread-1------>product wait.... now ListSIze:2