Interface, Abstract Class and Inheritance

Objective:

This section will help you to create interface, abstract class and how to use inheritance property.

Topics:

1. What is an Interface, How and When Interface is created and Why Interfaces are created?
2. What is an Abstract Class, How and When Abstract class is defined and Why Abstract Class is defined?
3. How and when an Interface implements another interface – What does it mean and when do we do this?
4. How and when an abstract class implements interface – What does it mean and when do we do this?
5. What happens when a class implements an interface and a class extending a abstract class?
6. Explain interface, abstract class and Inheritance concepts with examples and with implementations.
7. final, static, non-static variables/methods and Constructor in Interfaces.
8. final, static, non-static variables/methods and Constructor in Abstract Class.