設計模式-簡單工廠模式

簡單工廠(Simple Factory)模式

簡單點講.就是實例化的過程(也就是new一個對象)咱們交給工廠去解決，咱們只需告訴工廠咱們須要什麼

public interface Fruit {
    String NAME_APPLE = "apple";
    String NAME_BANNANA = "banana";

    void getName();
}

public class Apple implements Fruit{
    @Override
    public void getName() {
        System.out.println("我是蘋果");
    }
}

public class Banana implements Fruit{
    @Override
    public void getName() {
        System.out.println("我是香蕉");
    }
}

public class Factory {
    public static Fruit getFruit(String fruitName){
        if(fruitName.equals(Fruit.NAME_APPLE)){
            return new Apple();
        }else if(fruitName.equals(Fruit.NAME_BANNANA)){
            return new Banana();
        }
        return null;
    }
}

public class Demo {
    public static void main(String[] args) {
        Fruit fruit = Factory.getFruit(Fruit.NAME_APPLE);
        fruit.getName();
    }
}

控制檯console:

    我是蘋果