package Thread1;/** * 主方法 *  * @author zhangyugeng  * 创建汽车类Car 创建汽车工厂类CarFactory 创建顾客类Client */public class CreateAndBuyCar {    public static void main(String[] args) {        Car car = new Car();        CarFactory factory = new CarFactory(car);        Client client = new Client(car);        new Thread(factory).start();        new Thread(client).start();    }}/** * @author zhangyugeng  * 汽车类 */class Car {    boolean existCar = false; // 判断是否存在汽车    /* 创造汽车的方法 */    public synchronized void createCar() throws InterruptedException {        if (existCar) {            wait(); // 存在汽车就等候        }        System.out.println("库存没有汽车，正在生产汽车");        Thread.sleep(6000); // 模拟生产车的时间        System.out.println("生产了大众汽车");        notifyAll(); // 唤醒其他线程，让顾客知道可以买车了        existCar = true;    }    /* 购买汽车的方法 */    public synchronized void buyCar() throws InterruptedException {        if (!existCar) {            wait(); // 不存在汽车，顾客就等候买车        }        System.out.println("正在购买汽车");        Thread.sleep(2000); // 模拟购买汽车时间        System.out.println("买好了大众汽车");        System.out.println();        Thread.sleep(1000);        notifyAll();        existCar = false;    }}/** * 汽车工厂类 */class CarFactory implements Runnable {    Car car;    public CarFactory(Car car) {        this.car = car;    }    @Override    public void run() {        try {            for (int i = 0; i < 3; i++)                car.createCar(); // 生产车        } catch (InterruptedException e) {            e.printStackTrace();        }    }}/** * 顾客类 */class Client implements Runnable {    Car car;    public Client(Car car) {        this.car = car;    }    @Override    public void run() {        try {            for (int i = 0; i < 3; i++)                car.buyCar(); // 购买车        } catch (InterruptedException e) {            e.printStackTrace();        }    }}