Q 07) Object And Class ?

 An “Object is an Instance of a Class”.

Or

An Object represents real world entities with certain characteristics such as

·         STATE          : Represents Data (Value) of an object.

           BEHAVIOR : Represents the functionality of an object . e.g. : Deposit , withdraw,…

·         IDENTITY   : Every object is designated with a unique ID by the JVM. And this ID can only be                                  recognized by JVM.

3 Ways of Creating an Object   :

1)    MyDog mDog = new MyDog ();

Terminology :

MyDog                           mDog          =       new        MyDog ();

(Object Reference )    ( Reference Variable  ) ( Keyword)   ( Constructor )

or

2)    String        myString      =       “ Welcome to JavaNoobs !!!”  ;

     or

3)    String      myString      =      “ I see I remember !!! ”;

Class :

A Class is a blue print of object.

or

        We can say that a class is a software blueprint of an object used to instantiate many individual objects .

A class consists of Attributes and methods.