#046

Опубликовано: 04 Июль 2023
на канале: Programming Heist (Professor)

In this video we will discuss

Abstract Classes
----------------

Q1. What is dictionary meaning of abstract?
A1. existing only as an idea, not as a physical thing.

Q2. What is a abstract method?
A2. A method without body is known as abstract method.

For Example

void area();

Q3. What is abstract class?
A3. If a class contains one or more abstract methods then class is known as abstract class.
It may have both abstract and non-abstract methods(methods with bodies).
It can have constructors and static methods also.
It cannot be instantiated.(We cannot create the object of abstract class).
Although abstract classes cannot be used to instantiate objects, they can be used to create object references.

Q4. Why to create abstract class?
A4. It ensure user, to provide the implementation.
when a superclass is unable to create a meaningful implementation for a method.

Link for programs used in this video

https://github.com/krishankansal/Java...

Link for complete play list

• Java for complete beginners (Hindi): [Runn...