Thanks @Bear for your reply..
Actually, i just want to know whether my method could ran well or not..
i have write some Ajax's method which call Servlet and pass parameters..
but i can't "debug" the Ajax's Method , so i don't know that the Ajax's method could ran well or not...
i thought maybe it could solved by monitoring tomcat to see whether the Ajax's method work appropriate with my plan or not..
or maybe is there any tools for debugging Javascript?
i wanna trace it per line of code..
Thanks in advance @Bear..