设计模式（抽象工厂）

• 用来生产不同产品族的全部产品

public interface Mouse {
    void make();
}

public interface Keyboard {
    void make();
}

public class DellMouse implements Mouse {
    @Override
    public void make() {
        System.out.println("make dell house");
    }
}

public class HpMouse implements Mouse {
    @Override
    public void make() {
        System.out.println("make hp house");
    }
}

public class DellKeyboard implements Keyboard {
    @Override
    public void make() {
        System.out.println("make dell keyboard");
    }
}

public class HpKeyboard implements Keyboard {
    @Override
    public void make() {
        System.out.println("make hp keyboard");
    }
}

public interface DeviceFactory {
    Mouse produceMouse();

    Keyboard produceKeyboard();
}

public class DellFactory implements DeviceFactory {
    @Override
    public Mouse produceMouse() {
        return new DellMouse();
    }

    @Override
    public Keyboard produceKeyboard() {
        return new DellKeyboard();
    }
}

public class HpFactory implements DeviceFactory {
    @Override
    public Mouse produceMouse() {
        return new HpMouse();
    }

    @Override
    public Keyboard produceKeyboard() {
        return new HpKeyboard();
    }
}

public class DeviceFactoryTest {
    public static void main(String[] args) {
        DeviceFactory factory = new DellFactory();

        Mouse mouse = factory.produceMouse();
        mouse.make();

        Keyboard keyboard = factory.produceKeyboard();
        keyboard.make();
    }
}