Fedora using right now (package is installed Package rxtx-2.2-0.5.20100211.fc15.i686 already installed and latest version ).
Package rxtx-2.2-0.5.20100211.fc15.i686 already installed and latest version
I have used/tried:
Had same problem with v4l4j library installed from repositories. In ununtu netbeans project failed to start from IDE, but worked fine as jar.
Solved by putting *.so files to /usr/lib not /usr/lib/jni folder.
/usr/lib
/usr/lib/jni