Usage of keyword static at different places in a Java Class File

Question

Hi i am Raj,
i just wanted to know where all i can use keyword "static" and what does tht usage mean?
For example,
what do you mean when you declare a class static,
what do you mean when you declare a method static,
what do you mean when you declare a variable static.
could anyone comeup with clear explanation on the above, and it would be great if any links are provided which has some readup on this thing.
Thank you,
Raj.

Answer 1

BINU_KOLATHU wrote:
• Java does not allow global variables. The closest thing we can get to a global variable
in Java is to make the instance variable in the class static.
• The effect of doing this is that when we create multiple objects of that class, every object
shares the same instance variable that was declared to be static.
• To make an instance variable static we simply precede the declaration with the static
keyword :
e.g. public static int anInstanceVar = 0;
• In effect what we are really doing is saying that this instance variable, no matter how
many objects are created should always reside in the same memory location regardless
of the object. This then simulates a “global variable” of sorts.
• We usually make a variable declared to be final, static as well since it makes sense to only
have the one instance of a constant.
• Note, some people refer to static instance variables as “class variables”.Please stop resurrecting ancient threads