F4.java

import java.util.*;
class Animal{
 void sound() {
 System.out.println("Sound of Animals, which varies");
 }
}
class Dog extends Animal{
 void sound() {
 System.out.println("barking");
 }
}
class Tiger extends Animal{
 void sound(){
 System.out.println("Roaring ");
 }
}


public class F4 {
 Scanner sc= new Scanner(System.in);
 String c = sc.nextLine();
 Animal ob = new Animal();
 Dog o = new Dog();
 o.sound();
}