Introduction

https://blog.sigma-star.io/2024/01/people-dont-understand-oop/

OOP stands for Object-Oriented Programming.

Procedural programming is about writing procedures or functions that perform operations on the data, while object-oriented programming is about creating objects that contain both data and functions.

But What is an Object

What about Class

Classes and objects are the two main aspects of object-oriented programming.

• A class is a template for objects, and an object is an instance of a class.
• When the individual objects are created, they inherit all the variables and functions from the class.

Why OOP

Following two concept explain everything the use of OOPs.

• Duplicate code is a Bad: OOPs provides code reusability which reduce the duplication of code because once you have duplicate code, you have make changes everywhere which leads to performance.
• Code will always be changed: Code can be changed anytime or requirement of application change anytime so when you want to make changes in your application, OOPs makes it easier.

Abstraction is mostly done by interfaces rather than abstract class.

In real life, you deal with a lot of objects or entities like a car, bike, animal, etc. So, programmers need software to be similar to real-world entities.

• Real-world objects have properties such as car model, car size for car, name, age, occupation for human, etc. and real-world entities or objects can do various things like bikes can move, people can walk or eat, etc. So OOP concept helps the program to be closer to real-world objects.

OOP allows code to be reusable and make it more simple. For example, you don’t have to define each room in the hotel management system every time, you can use OOP, to create a class for the room and use it whenever required.

Fundamentals Of OOP

There are 4 major principles that make a language Object Oriented: