Introduction to OOP

Chapter 1: Thinking Object-Oriented :

Summary

Object-oriented programming is not simply features added to a programming language. Rather, it is a new way of thinking
Object-oriented programming views a program as a community of agents, termed objects. Each object is responsible for a specific task.
An object is an encapsulation of state (data values) and behavior (operations).
The behavior of objects is dictated by the object class.
An object will exhibit its behavior by invoking a method (similar to executing a procedure) in response to a message.
Objects and classes extend the concept of abstract data types by adding the notion of inheritance.