Session2 Notes

OOPS Introduction

Real Life Object : Anything which exists in reality example : chair, you and me, mobile phone etc...

Class : Representation how an object will look like	
	    Drawing of an Object


What should we think of first -> Class or Object ?

Principle of OOPS
1. Think of an Object
2. Create its Class i.e. Drawing
3. From Class i.e Drawing create a Real Object

Computer Science

Object	: is a Multi Value Container
		  can be homogeneous or hetrogeneous

Class   : is a Textual Representation how an object will look like in the memory
		  is Description of Object
		  Coding the Object's Description

Question : How to find Objects ? Answer : Follow your problem Statement !!

One of the client has a requirement as in a problem statement Requirements: Create a software in whcih restaurants can be listed. Customer should be able to see them alongwith its Menu. Thereafter customer shall place an order. Either Online Payments or Cash should be permitted !!

How we will find Objects? Anything which will have lot of data associated with it !!

Restaurant, Customer, Menu, Dish, Order, Payment ...

Restaurant image name phone email address type category pricePerPerson rating landMark

Restaurant is an Object image, name, phone etc are attributes of Restaurant Object