OOP Basics

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Object-Oriented Programming (OOP) is a programming paradigm that organises code into objects, making it modular, reusable, and easier to maintain. Java is an object-oriented language, meaning everything revolves around objects and classes.

Key Concepts

Object – An instance of a class that contains state (fields/attributes) and behavior (methods).
Class – A blueprint for creating objects; defines attributes and methods.
Methods & Fields – Fields store object data, and methods define behavior.
Constructors – Special methods used to initialize objects.
Access Modifiers – Control visibility of fields and methods (e.g., private, public).

OOP helps in code reusability, modularity, and scalability. More details on each concept are covered in the subpages.

PreviousAbstract Class vs Interface NextWhat is a Class?

Last updated 2 months ago

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OOP Basics

About

Key Concepts

Object – An instance of a class that contains state (fields/attributes) and behavior (methods).
Class – A blueprint for creating objects; defines attributes and methods.
Methods & Fields – Fields store object data, and methods define behavior.
Constructors – Special methods used to initialize objects.
Access Modifiers – Control visibility of fields and methods (e.g., private, public).

OOP helps in code reusability, modularity, and scalability. More details on each concept are covered in the subpages.

PreviousAbstract Class vs Interface NextWhat is a Class?

Last updated 2 months ago

Was this helpful?