← Object-Oriented Programming learning pathObject-Oriented Programming · Module 1 of 10
What is OOP?
OOP organises code around objects that combine data and behaviour.
📖 Key ideas
- Object-Oriented Programming models real-world things as objects.
- An object has state (attributes) and behaviour (methods).
- Four pillars: encapsulation, abstraction, inheritance, polymorphism.
- Languages: Java, C++, Python, C#, Kotlin.
- OOP improves reuse, organisation and maintainability.
💡 Real-life example: OOP is describing a car by what it has (colour, speed) and what it does (start, brake).
ObjectInstance with state and behaviour
AttributeData stored in an object
MethodFunction belonging to an object
Four pillarsEncapsulation, abstraction, inheritance, polymorphism