Java:What is Static Variable?

What is Static Variable:
Static variable is that variable which has single copy in memory and is shared by all objects, so if there is any modifications to that static variable will also modify it’s value in all objects.

 

Important Notes about Static Variable:

** Fields that have the static modifier in their declaration are called static fields or class variables.

** Class variables (Static Variables) are referenced by the class name itself, as in

test1.demo //Code is given below

** Static Variables are associated with the class, rather than with any object. So, every instance of the class shares a class variable /Static Variable, which is in one fixed location in memory. Any object can change the value of a class variable.

static variable java

Code:
public class staticVariable

{

static int demo=0;

staticVariable()

{

demo++;

}

public static void main(String[] args)

{

staticVariable test1=new staticVariable();

System.out.println(“Value of demo in test1:”+test1.demo);

System.out.println(“***********************************” );

staticVariable test2=new staticVariable();

System.out.println(“Value of demo in test1:”+test1.demo);

System.out.println(“Value of demo in test2:”+test2.demo);

System.out.println();

}

}

 

OUTPUT
 
 
 
 

 

static variable java

 

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