"pls"? That's not in Merriam-Webster.
Anyway, the javax.management classes have to be provided. You can use the jmx.jar file that's distributed with
Tomcat if you can't get a copy from anywhere else.
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.