Constructors And Polymorphism

Objective:

This section will help you to learn what is constructor and how its work.

Topics:

1. What is a Constructor, When and Why do we create Constructor and How does a Constructor work?
2. Constructor for non-static variable initialization and static initializer block for static variable initialization.
3. Argument and No-Arg based constructor, Explicit constructor chaining, constructor overloading.
4. Polymorphism – compile-time polymorphism (method overloading) and run-time polymorphism (method overriding) and @Override Annotation.
5. When to do we need to do compile-time polymorphism (method overloading) and How do they work?
6. When to do we need to do run-time polymorphism (method overriding) and How do they work?