Any real-life entity/object has two parts:

• Properties (Describe its height, weight, width etc.)
• Functionality (Describes how it behaves)

Object-oriented programming removes some constraints of procedural programming language. It introduces:

• Modularity: Logic is modular
• Reusability: Code is reusable
• Extendability: Code is extendable

Object

An object is an entity which has

• Identity (Names)