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What is object-oriented programming?

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Quick answer

Object-oriented programming (OOP) is a way of writing software by modeling things as 'objects' that bundle data with the actions that work on it. It helps organize large programs into reusable, understandable pieces. Objects combine data (attributes) and behavior (methods) in one unit.

Key things to understand

  1. Objects combine data (attributes) and behavior (methods) in one unit.
  2. Classes are blueprints; objects are instances made from them.
  3. Core ideas: encapsulation, inheritance, and polymorphism.
  4. It makes big codebases easier to reuse, extend, and maintain.

People also ask

What is a class versus an object?
A class is a blueprint; an object is a specific instance created from that blueprint.
What is inheritance?
A way for one class to reuse and extend the properties and behavior of another.
Why use object-oriented programming?
It organizes complex code into reusable, self-contained pieces that are easier to maintain.