class Animal {
  public String name;

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

class Cat extends Animal {// 这里需要继承
  public String furColour;

  Cat(String n, String c) {
    super(n); // 这里需要调用父类的构造器
    name = n;
    furColour = c;
  }
}

class Dog extends Animal {
  public String eyesColour;

  Dog(String n, String c) {
    super(n);
    name = n;
    eyesColour = c;
  }
}

public class Test {
  public static void main(String args[]) {
    // 没用的类就删掉吧
    //
    Animal a = new Animal("aName");
  }
}