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1、一个例子体现面向对象编程好处1.一个饲养员给动物喂食物的例子体现JAVA中的面向对象思想,接口的用处 package com.softeem.demo; /* *author leno *动物的接口 */ interface Animal public void eat(Food food); /* *author leno *一种动物类:猫 */ class Cat implements Animal public void eat(Food food) System.out.println(小猫吃 + food.getName); /* *author leno *一种动物类:狗 */ c
2、lass Dog implements Animal public void eat(Food food) System.out.println(小狗啃 + food.getName); /* *author leno *食物抽象类 */ abstract class Food protected String name; public String getName return name; public void setName(String name) this.name = name; /* *author leno *一种食物类:鱼 */ class Fish extends Food
3、 public Fish(String name) this.name = name; /* *author leno *一种食物类:骨头 */ class Bone extends Food public Bone(String name) this.name = name; /* *author leno *饲养员类 * */ class Feeder /* *饲养员给某种动物喂某种食物 *param animal *param food */ public void feed(Animal animal, Food food) animal.eat(food); /* *author leno *测试饲养员给动物喂食物 */ public class TestFeeder public static void main(String args) Feeder feeder = new Feeder; Animal animal = new Dog; Food food = new Bone(肉骨头); feeder.feed(animal, food); /给狗喂肉骨头 animal = new Cat; food = new Fish(鱼); feeder.feed(animal, food); /给猫喂鱼
