④ 设计模式的艺术-04.抽象工厂（Abstract Factory）模式

抽象工厂模式

用来生产不同产品族的全部产品。（对于增加新的产品，无能为力；支持增加产品族）

抽象工厂模式是工厂方法模式的升级版本，在有多个业务品种、业务分类时，通过抽象工厂模式产生需要的对象是一种非常好的解决方式。

Engine.java

public interface Engine {
    void run();
    void start();
}


class LuxuryEngine implements Engine{

    @Override
    public void run() {
        System.out.println("转的快！");
    }

    @Override
    public void start() {
        System.out.println("启动快!可以自动启停！");
    }
    
}

class LowEngine implements Engine{
    
    @Override
    public void run() {
        System.out.println("转的慢！");
    }
    
    @Override
    public void start() {
        System.out.println("启动慢!");
    }
    
}

Seat.java

public interface Seat {
    void massage();
}

class LuxurySeat implements Seat {

    @Override
    public void massage() {
        System.out.println("可以自动按摩！");
    }
    
}
class LowSeat implements Seat {

    @Override
    public void massage() {
        System.out.println("不能按摩！");
    }
    
}

Tyre.java

public interface Tyre {
    void revolve();
}

class LuxuryTyre implements Tyre {

    @Override
    public void revolve() {
        System.out.println("旋转不磨损！");
    }
    
}

class LowTyre implements Tyre {

    @Override
    public void revolve() {
        System.out.println("旋转磨损快！");
    }
    
}

CarFactory.java

public interface CarFactory {
    Engine createEngine();
    Seat createSeat();
    Tyre createTyre();
}

LuxuryCarFactory.java

public class LuxuryCarFactory implements CarFactory {

    @Override
    public Engine createEngine() {
        return new LuxuryEngine();
    }

    @Override
    public Seat createSeat() {
        return new LuxurySeat();
    }

    @Override
    public Tyre createTyre() {
        return new LuxuryTyre();
    }


}

LowCarFactory.java

public class LowCarFactory implements CarFactory {

    @Override
    public Engine createEngine() {
        return new LowEngine();
    }

    @Override
    public Seat createSeat() {
        return new LowSeat();
    }

    @Override
    public Tyre createTyre() {
        return new LowTyre();
    }


}

Client

public class Client {

    public static void main(String[] args) {
        CarFactory  factory = new LuxuryCarFactory();
        Engine e = factory.createEngine();
        e.run();
        e.start();
    }
}