jna installation for ubuntu 12.04

I started to install datastax by referring this link. It requires jna for performance improvement.

I am using ubuntu:12.04 system. I installed using

 sudo apt-get install libjna-java

I din't get any error. But there is a list of steps specified for ubuntu:10.04. So it confused me whether i installed jna proper version which supports cassandra.

I googled it for jna verification but i end up with only one little useful link. It says about logs. So

1. How do i verify ubuntu:12.04 is compatible with the jna version i installed
2. And where ll be the log file to check for logs
3. And Do i must write a c or c++ program to check jna or is there any commands such as verifying java i.e java -version

Any suggestions?

Copyright Notice：Content Author:「Gibbs」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/28603355/jna-installation-for-ubuntu-12-04