When printing reports or casting Strings to Numbers, it’s very useful to use the DecimalFormat class found in java.text. This class is pretty straightforward and easy to use, but some problems may be found when your work with this class in computers from other countries. Internationalization will cause your program to behave in a way you may not expect in some cases. If you use this class to parse a number to a String, you may find that when a user enters a number in a french computer you will be getting a ParseException, because the computer is expecting different symbols. […]

Numbers to Strings with custom symbols // DecimalFormat – DecimalFormatSymbols