I downloaded the latest snapshot for linux portable, extracted the tar.gz and run ./JabRef/bin/JabRef.
But all I get is
Error: could not find libjava.so
Error: Could not find Java SE Runtime Environment.
There should be a JRE shipped with JabRef right? And i can find libjava.so at ./JabRef/lib/runtime/lib/libjava.so
Do I need to do any more setting up?