Do you want us to install it and configure it for you too? Ooh, and should we use it to write all of your programs as well?
Why don't you pick out a compiler first, then try to install it yourself. Then if you have problems, we can probably help. As it is, we don't even know what OS you use, so even something as simple as suggesting a compiler is impossible.
public class GrossmontBank
//class variables (global - accessible throughout this class)
//scanner object to be used throughout
private static Scanner input = new Scanner(System.in);