Polymorphism

Question 1

What is polymorphism?

Answer 1

Refers to classes in which the base and derived classes have the same functions.

Using the same method name to indicate different implementations.

Question 2

What is the process of overriding?

Answer 2

This is when the methods that a subclass would normally inherit are redefined.

Question 3

What two rules does the compiler follow if the function exists in both the superclass and the derived class?

Answer 3

1. If the function is invoked by the object of the subclass, then the function of the subclass is executed.
2. If the functions is invoked by the object of the superclass, then the superclass method is executed.

Question 4

What methods cannot be overridden?

Answer 4

Private
Static
Final
Methods with final classes

Question 5

What does super() do?

Answer 5

Used to call the superclass and access the constructor in the superclass.