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  • 动物园最终版

    10.31

    动物园最终代码:

    import java.util.Vector;

    public class Zoo {

    public static void main(String args[]) {
    Feeder f = new Feeder("小李");
    Vector<Animal> ans = new Vector<Animal>();

    //饲养员小李喂养一只狮子
    ans.add(new Lion());
    //饲养员小李喂养十只猴子
    for (int i = 0; i < 10; i++) {
    ans.add(new Monkey());
    }
    //饲养员小李喂养5只鸽子
    for (int i = 0; i < 5; i++) {
    ans.add(new Pigeon());
    }
    f.feedAnimals(ans);
    }
    }

    class Feeder {

    public String name;

    Feeder(String name) {
    this.name = name;
    }

    public void feedAnimals(Vector<Animal> ans) {
    for (Animal an : ans) {
    an.eat();
    }
    }
    }

    abstract class Animal {

    public abstract void eat();
    }

    class Lion extends Animal {

    public void eat() {
    System.out.println("我不吃肉谁敢吃肉!");
    }
    }

    class Monkey extends Animal {

    public void eat() {
    System.out.println("我什么都吃,尤其喜欢香蕉。");
    }
    }

    class Pigeon extends Animal {

    public void eat() {
    System.out.println("我要减肥,所以每天只吃一点大米。");
    }
    }

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  • 原文地址:https://www.cnblogs.com/092e/p/14146247.html
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