In JSP there is no need to set classpath explicitly. you should keep all the third party jar files in WEB-INF\lib folder, and the web-container will automatically put it in classpath. Also you should put your own beans / .class files in WEB-INF/classes folder.
Prakash Dwivedi (SCJP2, SCWCD, SCBCD)
"Failure is not when you fall down, Its only when you don't get up again"