org/eclipse/jdt/internal methods in tomcat 7 profilinig

[Ragini]

Hi all,

I am trying to profile tomcat 7 with java profiler. I start the tomacat 
run web application(small) in browser and stop the server. When I stop 
the server, I get the output from the profiler. Please note that I am 
using ubunut 12.04. I have put war file(chat.war) in webapps dir of tomcat.

My confusion is here: When I see the profiler output, I see some methods 
of org/eclipse/jdt/internal... classes. *So where do this eclipse/jdt 
classes reside in tomcat ? What are they used for ? why each time they 
get executed when I run any web application ?**
*
I am new to tomcat and will appreciate your any help in finding answers 
to this questions.

Thanks.

Ragini.