warning message when I start tomcat

[ico chen]

I have a project, let's call it "ee".
When I put this project folder under "tomcat/webapps/"
and start tomcat, I have some warning messages like below:
2004-4-12 20:26:45 java.util.jar.Attributes read
Duplicate name in Manifest: Class-Path
so how to deal with this?
Thanks a lot.