Final

Question 1

What is a final variable?

Answer 1

A final variable is one who’s value does not change. Once the value is set, it cannot be changed.

Question 2

Can a class be marked as final?

Answer 2

Yes, once it is marked as final, it cannot be extended?

Question 3

Can a method be marked as final?

Answer 3

Yes, a final method cannot be overridden by a child class.

Question 4

What is a blank final variable?

Answer 4

When we declare a final variable without giving it an initial value, then it is called a blank final variable.