In this HackerRank Java Inheritance I problem we need to add a sing method to the Bird class, then modify the main method accordingly so that the code prints the lines on the separate line.

HackerRank Java Inheritance I problem solution

HackerRank Java Inheritance I problem solution

class Animal{
   void walk()
   {
      System.out.println("I am walking");
   }
}

class Bird extends Animal
{
   void fly()
   {
      System.out.println("I am flying");
   }
    void sing(){System.out.println("I am singing");}
}
public class Solution
{

   public static void main(String args[])
   {

     Bird bird = new Bird();
     bird.walk();
     bird.fly();
     bird.sing();
   }
}