生产者消费者问题---拿鸡蛋

import java.util.ArrayList;
import java.util.List;

public class Plate {
List<Object> eggs = new ArrayList<Object>();

// 定义一个拿鸡蛋的方法，返回鸡蛋（基本数据类型）
public synchronized Object getEggs() {
if (eggs.size() == 0) {
try {
wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}

Object egg = eggs.get(0);// 当放入鸡蛋的时候拿到鸡蛋
eggs.clear();// 清空盘子
notify();// 唤醒等待的单个线程
System.out.println("拿到鸡蛋,你该放鸡蛋了");
return egg;
}

//定义一个放鸡蛋的方法，传入鸡蛋参数
public synchronized void putEggs(Object egg) {
if (eggs.size() >0 ) {
try {
wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
eggs.add(egg);// 往盘子里面放鸡蛋
notify();// 唤醒等待的单个线程
System.out.println("放入鸡蛋，你可以拿了！");

}

public static void main(String[] args) {
Plate plate = new Plate();
Thread t1 = new PutThread(plate);
Thread t2 = new GetThread(plate);
t1.start();
t2.start();
try {
t1.join();
t2.join();
} catch (InterruptedException e) {
e.printStackTrace();
}

}
}

// 给放鸡蛋添加单个线程
class PutThread extends Thread {
private Plate plate;
private Object egg = new Object();

public PutThread(Plate plate) {
this.plate = plate;
}

public void run() {
for (int i = 0; i < 10; i++) {
plate.putEggs(egg);
}
}
}

// 给拿鸡蛋添加单个线程
class GetThread extends Thread {
private Plate plate;

public GetThread(Plate plate) {
this.plate = plate;
}

public void run() {
for (int j = 0; j < 10; j++) {
plate.getEggs();
}

}
}