案例描述

飼養(yǎng)員在給動(dòng)物喂食時(shí)，給不同的動(dòng)物喂不同的食物。例如，飼養(yǎng)員XXX拿著XX克bone喂養(yǎng)dog；飼養(yǎng)員XXX拿著XX克fish喂養(yǎng)cat。

本案例要求編寫一個(gè)程序模擬飼養(yǎng)員喂食動(dòng)物的過(guò)程，案例要求如下：

飼養(yǎng)員XXX拿著XX克bone喂養(yǎng)dog

飼養(yǎng)員XXX拿著XX克fish喂養(yǎng)cat

動(dòng)物類

public class Animal {public void eat(){System.out.println("開飯時(shí)間到了.....");} }

Cat類

public class Cat extends Animal {public void eat(Fish fish){eat();System.out.println(this+"吃"+fish);}public String toString(){return"Cat";} }

Food類

public class Food {private int weight;public Food(int weight){this.weight =weight;}public int getWeight(){return weight;}}

Bone類

public class Bone extends Food {public Bone(int weight) {super(weight);}public String toString(){return"Dog";}}

Dog類

public class Dog extends Animal {public void eat(Bone bone){eat();System.out.println(this+"吃"+bone); }public String toString(){return"Dog";} }

Fish類

public class Fish extends Food {public Fish(int weight){super(weight);}public String toString(){return"Fish";}}

Feeder類（飼養(yǎng)員類）

public class Feeder { private String name;public Feeder(String name) {this.name = name;}public void feed(Cat cat,Fish fish){ cat.eat(fish);System.out.println("飼養(yǎng)員"+name+"拿著"+fish.getWeight()+"克"+fish+"喂養(yǎng)"+cat+"!");}public void feed(Dog dog,Bone bone){ dog.eat(bone);System.out.println("飼養(yǎng)員"+name+"拿著"+bone.getWeight()+"克"+bone+"喂養(yǎng)"+dog+"!");} }

測(cè)試類（test）

public class test { public static void main(String[] args) {Feeder fd = new Feeder("小劉");Dog dog=new Dog();Bone bone=new Bone(400);fd.feed(dog, bone);System.out.println("=============");fd.feed(new Cat(),new Fish(500));} }

總結(jié)

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