What will be the output of the following Java program?

class A 
{
    int i;
    public void display() 
    {
        System.out.println(i);
    }    
}    
class B extends A 
{
    int j;
    public void display() 
    {
        System.out.println(j);
    } 
}    
class Dynamic_dispatch 
{
    public static void main(String args[])
    {
        B obj2 = new B();
        obj2.i = 1;
        obj2.j = 2;
        A r;
        r = obj2;
        r.display();     
    }
}

What is method overriding in Java?

A. Redefining a superclass method in a subclass

B. Defining a new method with the same name in a subclass

C. Making a method private in a subclass

D. Hiding methods in a superclass

What is the purpose of method overloading in Java?

A. Creating static methods

B. Hiding methods in a superclass

C. Redefining methods in a subclass

D. Defining multiple methods with the same name but different parameters

In method overriding, which keyword is used in the child class to indicate that a method is intended to override a superclass method?

A. @OverrideMethod

B. @OverrideSuper

C. @Override

D. @OverrideParent

What happens when a subclass tries to override a final method from the superclass in Java?

A. The final method is hidden

B. It results in a compilation error

C. The final method becomes static

D. The final method is null