HackerRank Java- Inheritance I

The code above is provided for you in your editor. You must add a sing method to the Bird class, then modify the main method accordingly so that the code prints the following lines:

I am walking
I am flying
I am singing

  1. import java.io.*;
  2. import java.util.*;
  3. import java.text.*;
  4. import java.math.*;
  5. import java.util.regex.*;
  6. class Animal{
  7. void walk(){
  8. System.out.println("I am walking");
  9. }
  10. }
  11. class Bird extends Animal {
  12. void fly() {
  13. System.out.println("I am flying");
  14. }
  15. void sing() {
  16. System.out.println("I am singing");
  17. }
  18. }
  19. public class Solution{
  20. public static void main(String args[]){
  21. Bird bird = new Bird();
  22. bird.walk();
  23. bird.fly();
  24. bird.sing();
  25. }
  26. }
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