代碼如下：

abstract class Animal {
    int age;
    public Animal() {};
    public Animal(int age) {
        this.age = age;
    }
}

class Bird {
    public Bird(int age) {
        super(age);
        System.out.println("我是一直紅色的鳥！");
        System.out.println("我今年" + age + "歲了！");
    }
}

class Fish {
    public Fish(int age) {
        super(age);
        System.out.println("我是一直5斤重的魚！");
        System.out.println("我今年" + age + "歲了！");
    }
}

public class Test {
    public static void main(String[] args) {
        Bird bird = new Bird();
        Fish fish = new Fish();
    }
}

執(zhí)行結(jié)果如下：

沒看出程序有什么毛病，我傳值的時(shí)候就是傳的1個(gè)，怎么會(huì)說我沒有參數(shù)呢？