How do you use internal static variables in Java?

Question

Is there a way to use internal static variables in Java? eg take this C code:

void increment(){
    static int i = 0;
    i++;
    printf("%i",i);
}

How would I do this in Java?

Answer 1

Java doesn't have any direct equivalent - all state which you want to be persisted across method calls has to be stored in fields rather than local variables. So you can have this:

private int counter = 0;

public void increment() {
    counter++;
    System.out.println(counter);
}

... but of course the other methods in the same class have access to counter as well.

Answer 2

for the same purpose you will have to re-write the code as per the java standard. declare the variable outside the method. It need not be static if you just want to access inside the method.

int i = 0;
void increment(){
    i++;
    System.out.println(i);
}