Help me in solving AJOOP12 problem

help
,
1

My issue

output is correct, but its showing
Wrong Answer ??. i cant move to next topic

My code

class Animal {
   public void makeSound() {
      System.out.println("Animal makes a sound");
   }
}

class Dog extends Animal {
   public void makeSound() {
      System.out.println("Dog barks");
   }
}

class Cat extends Animal {
   public void makeSound() {
      System.out.println("Cat meows");
   }
}

class Codechef {
   public static void main(String[] args) {
      Animal animal = new Animal();
      Animal animal1 = new Dog();
      Animal animal2 = new Cat();

      animal.makeSound(); // Output: Animal makes a sound
      animal1.makeSound(); // Output: Dog barks
      animal2.makeSound(); // Output: Cat meows
   }
}

Learning course: Learn Advance Java
Problem Link: CodeChef: Practical coding for everyone