Welcome to the JavaRanch, Tamizh!
This message doesn't really mean anything. Tomcat has a high-performance option where it uses the native library to get a
boost. However, because this library is not "write once, run anywhere", it has to be manually created and installed into a custom-built copy of Tomcat. If it isn't, you'll get this informational message when Tomcat starts.
Most of the time, it's not worth going to all that trouble, especially for
test servers. And truthfully, I've never seen any stats that make me want to do it even on production machines. Without compelling evidence, I'd rather invest in hardware that's powerful enough to perform with the unmodified Tomcat than have to spend the time and effort keeping a custom build up to date.
So just ignore this message. It's not a problem.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.