Query on url-pattern element of web.xml file ??

[Bikash Paul]

Hi all friends,
If my web application's web.xml file contains this:
<filter-mapping>
<filter-name>Test Filter</filter-name>
<url-pattern>/*.jsp</url-pattern>
</filter-mapping>
then the filter doesn't run when I invoke a JSP in the application's top-level directory.
If I change the url-pattern to this:
<url-pattern>*.jsp</url-pattern>
then the filter does run.
Can any one please explain it why it is not working with /*.jsp.Iam little bit confused about <url-pattern> element of web.xml file.Can any one plz give me some tutorial link for this element so that I can clear my concept from there coz Iam also confused about <url-pattern> element in case of <servlet-mapping>.Any help will be highly appreciated.
Regards
Bikash
[ September 16, 2003: Message edited by: Bikash Paul ]

[jason adam]

I sort of explain it here. How is the JSP getting called?