Why bark method can not be called

Question

class Animal{
    void run() {
    }
}
class Dog extends Animal {
    void bark() {
    }
}
class Testing{
    public static void main(String[] args)  {
        Animal d         


        

Answer 1

You can call only the methods defined in the reference type. i.e since the Animal class has only one method ( run() ) you cant call bark() on it, even if its referring to Dog object.

What you are doing is upcasting, you can get to know more about upcasting and downcasting here