What is a CLASS & OBJECT? How do you differentiate these two ? Explain with examples

             A class is a template, blueprint, plan,design or prototype from which Objects can be derived.If you create an object from a class , it means you created an instance of a class.
 

 A small example in my view.....

               Suppose if you are planning to construct a house first step what you will do ?  you will go for design or plan of it, Once plan is ready you will start actual construction.    By keeping this plan with you,   construct  one more house ,like wise you can construct any number of houses.   Now here this plan is a class ,and actual construction is object. this class doesn't occupy any memory only object occupies memory.  From one class we can create ‘N’ number of objects.