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Difference between static and private static method

Vijaylaxmi Agarwal
Greenhorn

Joined: Sep 23, 2008
Posts: 3
Hi all,

Please tell me the difference between static and private static method and where are they used.

Thanks in advance
sudipto shekhar
Ranch Hand

Joined: Apr 02, 2008
Posts: 823

Originally posted by Vijaylaxmi Agarwal:
Hi all,

Please tell me the difference between static and private static method and where are they used.

Thanks in advance


Hello and welcome to JavaRanch.

Static modifier is used to create variables and methods that will exist independently of any instance created for the class. Static members exists before any instance of the class is created.
Also there will be only one copy of the static member.

To call a static method displayRuns() of the class named Cricket we write

Cricket.displayRuns();

Class name is used to invoke the static method as static member does not depend on any instance of the class.

private static method means you can not invoke the method from outside the class as the method is private to the class.

Hope you get the explanation.



Regards, Sud.
SCJP 5 ScjpFAQ JLS
sudipto shekhar
Ranch Hand

Joined: Apr 02, 2008
Posts: 823

think of private static methods as the membeers that belong to the class and not of any instance of the class.

Static member of the class are called even before the object of that class are created.

Like the most common example, you want to know how many of the instance of the Dog class is created. To find out this we write the code as follows.

Here in the example the private member is the count variable which is the static member. A private static method is loaded in the memory even before the instance of the class is created.
And since the member is private it can not be called from outside the class.

 
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