how do i declare a scanner object, filescan publicly so that i may use filescan in varios functions

i found this statement in a forum---->
private static Scanner scanner = new Scanner (1 3 4 4");

when I modified it to----->
public static Scanner filescan = new Scanner(new File("inputdata.txt"));

//declared in the main

i get the following error message
Illegal modifier for parameter scanner; only final is permitted

Thank you guys