Object-oriented programming provides us to play with objects. Now the question is what are objects? Object-defined as any entity around us.Visible and Nonvisible objects around us through our senses. Now a closer look at objects around us reveal that there is various type of objects as described below. Objects that operate independently Objects that work in associations with each other Objects that frequently interact with each other Objects that are contained in another object  Every object has three characters Identity:   It is the name which is associated with object  e.g  Dog is associated with animal  State:     An objects can be  in many states  e.g  dog is barking Behaviour What is the ability of objects  e.g  dog can run, bite, bark and e.t.c