It's already exist. if you go to add\remove program you'll find it + if you install the application and RErun the install file it gives you an option to uninstall the application. All in all nothing called uninstall file. uninstall option by default in install project.
public class GrossmontBank
//class variables (global - accessible throughout this class)
//scanner object to be used throughout
private static Scanner input = new Scanner(System.in);