What is the use of a private static variable in Java?

Question

If a variable is declared as public static varName;, then I can access it from anywhere as ClassName.varName. I am also aware that static members a

Answer 1

When in a static method you use a variable, the variable have to be static too as an example:

private static int a=0;  
public static void testMethod() {  
        a=1;  
}