Object-Oriented Programming (OOP)

• It is a problem-solving approach, where all computations are carried out using objects.
• It bundles related properties and behaviours into individual objects to structure a program.
  • An object may represent a person with properties like name, and behaviours like walking.
• The program is divided into small parts called objects.
• It follows a bottom-up approach.
• It has access specifiers like private, public, protected, etc.
• Adding new data and functions is easy.
• It provides data hiding so it is more secure than procedural programming.
• It allows overloading.
• Data is more important than function.
• It provides the ability to simulate the real world.
• i.e. C++, Java, Python, C#, JavaScript, Ruby, PHP, VB.NE, etc.

Terminologies

Class

• A class is a group of objects that share common properties and behaviour. It is a blueprint or template from which objects are created.

Object

• Object is any real-world entity that can have some characteristics or which can perform some tasks. It is also called the instance of a class.

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