多线程使用Lock实现生产者实现者代码

package cn.com.servyou.qysdsjx.thread;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * daieweb
 * <p>
 * Created by haozb on 2017/9/28.
 */
public class Plate {
    /** 装鸡蛋的盘子 */
    List<Object> eggs = new ArrayList<Object>();
    Lock lock = new ReentrantLock();
    Condition get = lock.newCondition();
    Condition set = lock.newCondition();
    /** 取鸡蛋 */
    public Object getEgg() {
        try {
            lock.lock();
            while (eggs.size() == 0) {
                try {
                    //wait();
                    //lock.wait();
                    get.await();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            Object egg = eggs.get(0);
            eggs.clear();// 清空盘子
            set.signal();
            System.out.println("拿到鸡蛋");
            return egg;
        } catch (Exception e) {

        }finally {
            lock.unlock();

        }
        return eggs;
    }
    /** 放鸡蛋 */
    public  void putEgg(Object egg) {
        try {
            lock.lock();
            while (eggs.size() > 0) {
                try {
                    set.await();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            eggs.add(egg);// 往盘子里放鸡蛋
            get.signal();
            System.out.println("放入鸡蛋");
        } catch (Exception e) {

        }finally {
            lock.unlock();
        }

    }
    static class AddThread implements Runnable  {
        private Plate plate;
        private Object egg = new Object();
        public AddThread(Plate plate) {
            this.plate = plate;
        }
        public void run() {
            plate.putEgg(egg);
        }
    }
    static class GetThread implements Runnable  {
        private Plate plate;
        public GetThread(Plate plate) {
            this.plate = plate;
        }
        public void run() {

            plate.getEgg();
        }
    }
    public static void main(String args[]) {
        Plate plate = new Plate();
        for(int i = 0; i < 10; i++) {
            new Thread(new AddThread(plate)).start();
            new Thread(new GetThread(plate)).start();
        }
    }
}