I need a library to access operating system's user and password database, in order to synchronize my app's user list with the operating system's. My app is going to be made in Java, so if the library is multi platform it would be great (at least Linux/Unix/*BSD and all Windows but 98/ME). But I think a multi platform library of this kind would be rare, so I can accept also that the library is only for Windows 2000/XP/2003 Server (and NT 4 if possible), or only for Linux/Unix/*BSD.
Originally the question was here: http://www.experts-exchange.com/Programming/Programming_Languages/Java/Q_21092083.html
, but since I was said that I can use native languajes such as C++ from Java, I'm posting it here.