I just got on count that I needed to give some data to the program in
the command line, something like:
UDPClient 7 message
and since I use JCreator and doesnt let me do it when trying to run
it after compile, it throw that message (when compile),
which is as you said, is not an error.
When I got everything right then I think didn`t need your answers,
but I learn what deprecation means  and now I know now the command to
see everything explain