Object-Oriented Programming (OOP) Interview Question

What is Object Oriented Programming?

OOP (Object-Oriented Programming) is a programming paradigm that deals with the concept of “Objects”. Objects can be seen as instances of real-world entities such as classes, which contain certain characteristics and behaviors specified in the class template.

In simple languages, a class can be a template, based on which objects are created. So an Object can be seen as an instance of a class and sometimes it can be called an “instance”. The specific terms refer to what the object is, and what behavior it exhibits.

For example, let’s create an OOP model with a car:

Class: specific car model such as Audi A4, BMW I8, Maruti Suzuki Vitara Brezza, etc.
Object: Any specific car, such as your car
Features: What is the color of the car? What is your chassis number?
Behavior: How does the car run? How does it shift gears?
Features can be understood as data, attributes and behavior as functions, methods in programming languages.

The concept of “object” allows the OOP model to easily access, use and modify entity data and methods, interact with other objects and define methods at runtime (during program execution). This gives the OOP model meaning and makes it diverse in implementation.

In fact, the OOP model is so popular that many of the most widely used programming languages ​​support and use this Object Oriented Programming or OOP model, such as Java, C++, Python, C#, etc.