i dont get the code on the end what should make the pet giving both Meow and Woof especially for (int i=0; i<2; i++) {

Question

class Animal {
public void makeSound() {
System.out.println("Grr...");
}
}
class Cat extends Animal {
public void makeSound() {
System.out.println("Meow");
}
}
class Dog extends Animal {
public void makeSound() {
System.out.println("Woof");
}
}

class Program {
public static void main(String args[ ]) {
Animal a = new Dog();
Animal b = new Cat();

a.makeSound();
b.makeSound();
}
}
Public Static Void Main(String[] args){
pet[0] = new Dog();
pet[1] = new Cat();
for (int i=0; i<2; i++) {
pet[i].makeSound();
}

Answer 1

Animal[] pet = new Animal[2];

pet[0] = new Dog();
pet[1] = new Cat();

Then your loop will work.

(like String [] string = new String [] or int [] number = new number [] ..).

Answer 2

You didn't initialize pet[]