java基础案例 饲养员喂养动物

案例描述

饲养员在给动物喂食时，给不同的动物喂不同的食物。例如，饲养员XXX拿着XX克bone喂养dog；饲养员XXX拿着XX克fish喂养cat。

本案例要求编写一个程序模拟饲养员喂食动物的过程，案例要求如下：

饲养员XXX拿着XX克bone喂养dog

饲养员XXX拿着XX克fish喂养cat

动物类

public class Animal {
  public void eat(){
    System.out.println("开饭时间到了.....");
  }
}

Cat类

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

Food类

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

}

Bone类

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

}

Dog类

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

Fish类

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

}

Feeder类（饲养员类）

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("饲养员"+name+"拿着"+fish.getWeight()+"克"+fish+"喂养"+cat+"!");
    }
    public void feed(Dog dog,Bone bone){  
      dog.eat(bone);
        System.out.println("饲养员"+name+"拿着"+bone.getWeight()+"克"+bone+"喂养"+dog+"!");
    }
}

测试类（test）

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