java设计模式之简单工厂/静态工厂

封装了创建对象的过程，可以通过参数直接获取对象

咖啡接口

package com.example.demo.designPatterns.simpleFactory;

public interface Coffee {

}

美式咖啡

package com.example.demo.designPatterns.simpleFactory;

public class AmericanoCoffee implements Coffee{
}

拿铁咖啡

package com.example.demo.designPatterns.simpleFactory;

public class LatteCoffee implements Coffee{
}

咖啡工厂

package com.example.demo.designPatterns.simpleFactory;

public class SimpleCoffeeFactory {
    public static Coffee createCoffee(String type) {
        Coffee coffee = null;
        if ("americano".equals(type)) {
            coffee = new AmericanoCoffee();
        } else if ("latte".equals(type)) {
            coffee = new LatteCoffee();
        }
        return coffee;
    }
}

咖啡商店

package com.example.demo.designPatterns.simpleFactory;

public class CoffeeStore {
    public static void main(String[] args) {
        Coffee americano = SimpleCoffeeFactory.createCoffee("americano");
        System.out.println(americano.toString());
    }
}