Try to downgrade to Zulu JDK 8 to see if this solves the issue.
If yes, please report back with the following info:
uname -a
java -version
and the exact openHAB 2.x build (2.0 or 2.1 or 2.2 snapshot #)
so we can see which combo is problematic and update the docs
http://docs.openhab.org/installation/index.html#prerequisites