Question

Is there a way to use internal static variables in Java? e.g 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.