How cany I avoid a java namespace clash between different versions of the same library?

Hi,

I'm trying to use a java class I wrote for controlling a lab instrument via serial port. This java class is using nrjavaserial, a fork of the RXTX serial library shipped with Matlab (as of 2017a). Both RXTX and nrjavaserial unfortunately use the same namespace gnu.io.*, and trying to use both libraries at the same time will not work.

Of course I could switch back to using RXTX (which at this point has been unmaintained for several years and has a list of known problems) for compatibility's sake, but I'd prefer using nrjavaserial. Is there a way prohibit the loading of a shipped library so that a namespace clastoh won't happen? Or should I just rip RXTXcomm.jar from my installation, or rename nrjavaserial.jar and drop it into its place (I guess I'd have to expect some negative fallout from either option...)?

Best,

Andreas