《设计模式》4.抽象工厂模式（创建型）_extends+implements 设计模式-优快云博客

本文介绍了一种使用工厂模式创建不同颜色的车辆实例的设计方法，并通过具体的Java代码实现了汽车、巴士和出租车的不同特性和创建过程。

public enum VehicleColor {
    BLACK,
    WHITE,
    GRAY,
    RED;
}

public abstract class BaseVehicle implements Vehicle {
    private VehicleType type;
    private VehicleColor color;
    public BaseVehicle(VehicleType type , VehicleColor color) {
        this.type = type;
        this.color = color;
    }

    @Override
    public void specification() {
        System.out.println("This is a " + color.name().toLowerCase() + " " + type.name().toLowerCase());
    }
}

public interface ICar extends Vehicle {
    void showOwner();
}

public class BlackCar extends BaseVehicle implements ICar {
    public BlackCar() {
        super(VehicleType.CAR, VehicleColor.BLACK);
    }

    @Override
    public void showOwner() {
        System.out.println("It's Tom's car");
    }
}

public class WhiteCar extends BaseVehicle implements ICar {
    public WhiteCar() {
        super(VehicleType.CAR, VehicleColor.WHITE);
    }

    @Override
    public void showOwner() {
        System.out.println("It's Smith's car");
    }
}

public class GrayCar extends BaseVehicle implements ICar {
    public GrayCar() {
        super(VehicleType.CAR, VehicleColor.GRAY);
    }

    @Override
    public void showOwner() {
        System.out.println("It's Annie's car");
    }
}

public class RedCar extends BaseVehicle implements ICar {
    public RedCar() {
        super(VehicleType.CAR, VehicleColor.RED);
    }

    @Override
    public void showOwner() {
        System.out.println("It's Zhao's car");
    }
}

public interface IBus extends Vehicle {
    void showBusNo();
}

public class BlackBus extends BaseVehicle implements IBus {
    public BlackBus() {
        super(VehicleType.BUS, VehicleColor.BLACK);
    }

    @Override
    public void showBusNo() {
        System.out.println("Bus No. 50");
    }
}

public class WhiteBus extends BaseVehicle implements IBus {
    public WhiteBus() {
        super(VehicleType.BUS, VehicleColor.WHITE);
    }

    @Override
    public void showBusNo() {
        System.out.println("Bus No. 9");
    }
}

public class GrayBus extends BaseVehicle implements IBus {
    public GrayBus() {
        super(VehicleType.BUS, VehicleColor.GRAY);
    }

    @Override
    public void showBusNo() {
        System.out.println("Bus No. 187");
    }
}

public class RedBus extends BaseVehicle implements IBus {
    public RedBus() {
        super(VehicleType.BUS, VehicleColor.RED);
    }

    @Override
    public void showBusNo() {
        System.out.println("Bus No. 19");
    }
}

public interface ITaxi extends Vehicle {
    void showCompany();
}

public class BlackTaxi extends BaseVehicle implements ITaxi {
    public BlackTaxi() {
        super(VehicleType.TAXI, VehicleColor.BLACK);
    }

    @Override
    public void showCompany() {
        System.out.println("This taxi is belong to Didi Limited.");
    }
}

public class WhiteTaxi extends BaseVehicle implements ITaxi {
    public WhiteTaxi() {
        super(VehicleType.TAXI, VehicleColor.WHITE);
    }

    @Override
    public void showCompany() {
        System.out.println("This taxi is belong to Nantong Taxi Company");
    }
}

public class GrayTaxi extends BaseVehicle implements ITaxi {
    public GrayTaxi() {
        super(VehicleType.TAXI, VehicleColor.GRAY);
    }

    @Override
    public void showCompany() {
        System.out.println("This taxi is belong to Hello Chuxing Company");
    }
}

public class RedTaxi extends BaseVehicle implements ITaxi {
    public RedTaxi() {
        super(VehicleType.TAXI, VehicleColor.RED);
    }

    @Override
    public void showCompany() {
        System.out.println("This taxi is belong to Ma Anshan taxi Company");
    }
}

工厂模式用于创建一种产品，抽象工厂用于创建同一系列的多个产品。

public interface VehicleFactory {
    <T> T createBlackVehicle();

    <T> T createWhiteVehicle();

    <T> T createGrayVehicle();

    <T> T createRedVehicle();
}

public class CarFactory implements VehicleFactory {
    @Override
    public BlackCar createBlackVehicle() {
        return new BlackCar();
    }

    @Override
    public WhiteCar createWhiteVehicle() {
        return new WhiteCar();
    }

    @Override
    public GrayCar createGrayVehicle() {
        return new GrayCar();
    }

    @Override
    public RedCar createRedVehicle() {
        return new RedCar();
    }
}

public class BusFactory implements VehicleFactory {
    @Override
    public BlackBus createBlackVehicle() {
        return new BlackBus();
    }

    @Override
    public WhiteBus createWhiteVehicle() {
        return new WhiteBus();
    }

    @Override
    public GrayBus createGrayVehicle() {
        return new GrayBus();
    }

    @Override
    public RedBus createRedVehicle() {
        return new RedBus();
    }
}

public class TaxiFactory implements VehicleFactory {
    @Override
    public BlackTaxi createBlackVehicle() {
        return new BlackTaxi();
    }

    @Override
    public WhiteTaxi createWhiteVehicle() {
        return new WhiteTaxi();
    }

    @Override
    public GrayTaxi createGrayVehicle() {
        return new GrayTaxi();
    }

    @Override
    public RedTaxi createRedVehicle() {
        return new RedTaxi();
    }
}

public class VehicleCreator {
    public static void main(String args[]) {
        VehicleFactory carFactory = new CarFactory();
        BlackCar blackCar = carFactory.createBlackVehicle();
        blackCar.specification();
        blackCar.showOwner();

        WhiteCar whiteCar = carFactory.createWhiteVehicle();
        whiteCar.specification();
        whiteCar.showOwner();

        GrayCar grayCar = carFactory.createGrayVehicle();
        grayCar.specification();
        grayCar.showOwner();

        RedCar redCar = carFactory.createRedVehicle();
        redCar.specification();
        redCar.showOwner();


        VehicleFactory busFactory = new BusFactory();
        BlackBus blackBus = busFactory.createBlackVehicle();
        blackBus.specification();
        blackBus.showBusNo();

        WhiteBus whiteBus = busFactory.createWhiteVehicle();
        whiteBus.specification();
        whiteBus.showBusNo();

        GrayBus grayBus = busFactory.createGrayVehicle();
        grayBus.specification();
        grayBus.showBusNo();

        RedBus redBus = busFactory.createRedVehicle();
        redBus.specification();
        redBus.showBusNo();


        VehicleFactory taxiFactory = new TaxiFactory();
        BlackTaxi blackTaxi = taxiFactory.createBlackVehicle();
        blackTaxi.specification();
        blackTaxi.showCompany();

        WhiteTaxi whiteTaxi = taxiFactory.createWhiteVehicle();
        whiteTaxi.specification();
        whiteTaxi.showCompany();

        GrayTaxi grayTaxi = taxiFactory.createGrayVehicle();
        grayTaxi.specification();
        grayTaxi.showCompany();

        RedTaxi redTaxi = taxiFactory.createRedVehicle();
        redTaxi.specification();
        redTaxi.showCompany();
    }
}

This is a black car
It's Tom's car
This is a white car
It's Smith's car
This is a gray car
It's Annie's car
This is a red car
It's Zhao's car
This is a black bus
Bus No. 50
This is a white bus
Bus No. 9
This is a gray bus
Bus No. 187
This is a red bus
Bus No. 19
This is a black taxi
This taxi is belong to Didi Limited.
This is a white taxi
This taxi is belong to Nantong Taxi Company
This is a gray taxi
This taxi is belong to Hello Chuxing Company
This is a red taxi
This taxi is belong to Ma Anshan taxi Company