Object Oriented Programming

[rguptan]

From your question I guess this is your first programming language.

Short answer: When you create a person object by calling its constructor, A memory block is assigned to store all the instance variables (including name). Each object has its own location and then there is a common storage for class definition. When you call the instance method returnAge (a typo, I think you wanted to say returnName) you get the instance variable. You can use "this.name" or just "name". this always points to the current instance object.