Java: error - non-static variable scan cannot be referenced from a static context

Question

I have this error:

non-static variable scan cannot be referenced from a static context

---

Question has been improved.

1) Posted a code instead of a pic.

2) Improved a formatting and question itself.

Answer 1

Try to declare the class variables as static. So you will have:

static char val;
static Scanner scan = new Scanner(System.in);