I'm living in Switzerland and all applications that I had to implement were internationalized (German, French, Italian, English).
In the assignment it is only said: <The character encoding is 8 bit US ASCII.>
Therefore the locale of the application is: Locale.US. Question 1: Is that right?
I can put the locale in the file <suncertify.properties> and the user can choose the locale he wants to use. To read the rates (hourly charge) in <db-2x2.db> I use a Currency Formatter. If the user changes the locale, then no rate can be parsed by the Currency Formatter.
Question 2: Is it better to hard code the locale instead of putting in the property file?
I would leave out the locale stuff completely. You're only getting yourself in unnecessary trouble.
Why would you want to use a currency formatter? The application doesn't do anything with the price. The only thing that it does with price is show the contents of the field to the user, so you can just read it as a string, and show it as is.
Also, no numbers are to be entered, compared or interpreted by the user, so also no number formatting is needed, so also no internationalization is needed for that.