接口隔离原则

官方定义

接口隔离原则（Interface Segregation Principle），又称ISP原则
1、 客户端不应该依赖它不需要的接口
2、 类间的依赖关系应该建立在最小的接口上

基本介绍

通俗的来讲，不要在一个接口中定义多个方法，接口应该尽量细化

package jiekogeli;

public class SegregationDemo {
    public static void main(String[] args) {
        new FruitShop().cutApple(new CookZhang());
        new FruitShop().cutTomato(new CookZhang());
        new VegetableShop().cutTomato(new CookLi());
        new VegetableShop().cutPotato(new CookLi());
    }
}

interface Knife {
    void cutApple();

    void cutTomato();

    void cutPotato();
}

class CookZhang implements Knife {
    @Override
    public void cutApple() {
        System.out.println("张师傅在切苹果");
    }

    @Override
    public void cutTomato() {
        System.out.println("张师傅在切土豆");
    }

    @Override
    public void cutPotato() {
        System.out.println("张师傅在切番茄");
    }
}


class CookLi implements Knife {
    @Override
    public void cutApple() {
        System.out.println("李师傅在切苹果");
    }

    @Override
    public void cutTomato() {
        System.out.println("李师傅在切土豆");
    }

    @Override
    public void cutPotato() {
        System.out.println("李师傅在切番茄");
    }
}

class FruitShop {
    public void cutApple(Knife knife) {
        knife.cutApple();
    }

    public void cutTomato(Knife knife) {
        knife.cutTomato();
    }
}

class VegetableShop {
    public void cutPotato(Knife knife) {
        knife.cutPotato();
    }

    public void cutTomato(Knife knife) {
        knife.cutTomato();
    }
}