Declaration vs Instantiation vs Initialization

Declaration, Instantiation and Initialization are very confusing terms in Java. Let us clear their meanings with example :


A variable is said to be declared when we give name to variable and associate it with a class.

Example :- Student stu; (here Student is a class)


Instantiation means we are creating an object or allocating memory. So use of new keyword to create an object and allocate memory is instantiation.


Initialize means we are associating/assigning some values to an object. So to associate values with object we call constructor. So calling constructor is called initialization.

Example:- new Student(); (here we are instantiating object using new keyword and initializing object by calling constructor).



Ankit is a computer adventurer who loves to explore different things related to technology. He has been associated with technology and coding from past 10 years.

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