工厂模式之简单工厂模式、工厂模式、抽象工厂

我看了工厂模式的三个不同的模式，跟着敲的时候，我想到了springmvc，它有没有用到工厂模式，然后百度了一下，原来没有工厂模式，springmvc中含有的是策略模式、观察者模式和合成模式，等在具体看看吧。策略模式我好早看过，都忘记了。要温故而知新。还有很多看过了就以为自己懂了，其实只是有个印象，还是要实现，动手，读书百变其义自见。未来的路还是很长，加油吧！

参考：https://blog.csdn.net/weixin_35985385/article/details/81430545

上面博客里面的有图很详细。我只是把我自己的代码记录一下方便自己查看。

简单工厂模式：

/**
 * @program: IdeaJava
 * @Date: 2020/1/9 14:50
 * @Author: lhh
 * @Description: 简单工厂模式
 */
public class SimpleFacotryApp {
    public static void main(String[] args) {

        Car myAutoCar = SimpleFactory.createCar("Auto");
        myAutoCar.run();

        Car myAudiCar = SimpleFactory.createCar("Audi");
        myAudiCar.run();
    }
}
interface Car
{
    void run();
}
class Auto implements  Car
{
    @Override
    public void run() {
        System.out.println("Auto runing ~~~");
    }
}
class Audi implements Car
{
    @Override
    public void run() {
        System.out.println("Audi runing ~~~");
    }
}
class SimpleFactory
{
    public static Car createCar(String s)
    {
        if (s.equals("Auto")) return new Auto();
        if (s.equals("Audi")) return new Audi();
        return null;
    }
}

工厂模式：

/**
 * @program: IdeaJava
 * @Date: 2020/1/9 15:22
 * @Author: lhh
 * @Description: 工厂模式
 */
public class FactoryApp {
    public static void main(String[] args) {

        TomatoFoodFactory tomatoFactory = new TomatoFoodFactory();
        Food mytomato = tomatoFactory.createFood();
        mytomato.color();

        Food myBanana = new BananaFoodFactory().createFood();
        myBanana.color();
    }
}
interface Food
{
    void color();
}
class Tomato implements Food
{
    @Override
    public void color() {
        System.out.println("Tomato is red!");
    }
}
class Banana implements Food
{
    @Override
    public void color() {
        System.out.println("Banana is yellow！");
    }
}
interface FoodFactory
{
    Food createFood();
}
class BananaFoodFactory implements FoodFactory
{
    @Override
    public Food createFood() {
        return new Banana();
    }
}
class TomatoFoodFactory implements FoodFactory
{
    @Override
    public Food createFood() {
        return new Tomato();
    }
}

抽象工厂模式：

/**
 * @program: IdeaJava
 * @Date: 2020/1/9 16:22
 * @Author: lhh
 * @Description: 抽象工厂模式
 */
public class AbstractFactoryApp {
    public static void main(String[] args) {

        IceCreamFactory appleIceCreamFactory= new AppleIceCreamFactory();
        BigIceCream bigAppleIceCream = appleIceCreamFactory.createBigIceCream();
        SmallIceCream smallAppleIceCream = appleIceCreamFactory.createSmallIceCream();
        bigAppleIceCream.taste();
        smallAppleIceCream.taste();

        IceCreamFactory bananaIceCreamFactory = new BananaIceCreamFactory();
        BigIceCream bigBananaIceCream = bananaIceCreamFactory.createBigIceCream();
        SmallIceCream smallBananaIceCream = bananaIceCreamFactory.createSmallIceCream();
        bigBananaIceCream.taste();
        smallBananaIceCream.taste();
    }
}
interface BigIceCream
{
    void taste();
}
interface SmallIceCream
{
    void taste();
}
class BigAppleIceCream implements BigIceCream
{
    @Override
    public void taste() {
        System.out.println("这是苹果味冰淇淋（大份）");
    }
}
class SmallAppleIceCream implements SmallIceCream
{
    @Override
    public void taste() {
        System.out.println("这是苹果味冰淇淋（小份）");
    }
}
class BigBananaIceCream implements BigIceCream
{
    @Override
    public void taste() {
        System.out.println("这是香蕉味冰淇淋（大份）");
    }
}
class SmallBananaIceCream implements SmallIceCream
{
    @Override
    public void taste() {
        System.out.println("这是香蕉味冰淇淋（小份）");
    }
}
interface IceCreamFactory
{
    BigIceCream createBigIceCream();
    SmallIceCream createSmallIceCream();
}
class AppleIceCreamFactory implements IceCreamFactory
{
    @Override
    public BigIceCream createBigIceCream() {
        return new BigAppleIceCream();
    }
    @Override
    public SmallIceCream createSmallIceCream() {
        return new SmallAppleIceCream();
    }
}
class BananaIceCreamFactory implements IceCreamFactory
{
    @Override
    public BigIceCream createBigIceCream() {
        return new BigBananaIceCream();
    }
    @Override
    public SmallIceCream createSmallIceCream() {
        return new SmallBananaIceCream();
    }
}