Problem about Filter.

Hi,
In my application I need to use 2/3 Fileters.
I have written it and deployed on Tomcat/4.0.6, as well.
Also made neccesarry entries in deployment descriptor.
But displys following error in tomcat log.

Starting service Tomcat-Standalone
Apache Tomcat/4.0.6
PARSE error at line 12 column 13
org.xml.sax.SAXParseException: Element type "filter" must be declared.
ERROR reading java.io.ByteArrayInputStream@e0cc23
At Line 108 /web-app/servlet-mapping/
Starting service Tomcat-Apache
Apache Tomcat/4.0.6

Expecting help to solve the problem.
Thanks & Regards,
Gajanan

You must make some mistake in your Application Deployment Descriptor:

The Servlet Specification includes a Document Type Descriptor (DTD) for the web application deployment descriptor, and Tomcat 4 enforces the rules defined here when processing your application's /WEB-INF/web.xml file. In particular, you must enter your descriptor elements (such as <filter>, <servlet>, and <servlet-mapping> in the order defined by the DTD (see Section 13.3).

double check it.