How to display accented character when I built a project in javafx?

normally I can fix the problem with old topics but now I am really stuck.

Well, my problem is when I built the project and the accented character. When I run the program with Netbeans there is no problem and the accented characters are ok. But when I built the project (in UTF-8) every accented character are strange symbols. I have this problem with windows 7.

With accented character I mean á, é, ó, etc. I tried using unicode but it didn't work.