INTERVIEW QUESTIONS J2EE JAVA DETAILS

Question: What is static variable?

Answer: A static variable is one that is not removed from memory after creation, even when it goes out of scope. The concept is very similar to that of a global variable, except that while a global variable is accessible from anywhere, a static variable is only accessible within certain parts of the program code.


The opposite of a static variable is an instance variable , which is a variable related to a single instance of a class.

Submitted by Amit Mathur

A static variable is one that is not removed from memory after creation, even when it goes out of scope. The concept is very similar to that of a global variable, except that while a global variable is accessible from anywhere, a static variable is only accessible within certain parts of the program code.


The opposite of a static variable is an instance variable , which is a variable related to a single instance of a class.

Submitted by Amit Mathur Source: CoolInterview.com

value is the same for all instances of the class. static variable give u a vlaue sharedby all instances of a class, in other words,one valu per class instead of one value per instance. Source: CoolInterview.com

static variable is a class level variable, this variable will be initialized at the time class loads in the memory,it's having only one copy accross the objects of the class, if one object is modifying the value of the static variable then it will be visible for all objects of the class Source: CoolInterview.com

Static variable is the one which got memory only once when the class get initialized.

It is per class basis.not per object basis. Source: CoolInterview.com

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