Integration Comet Messenger in my application

[Christophe]

Hello,

When I add the source of Integration Comet Messenger on my
application, I have the error in the class:
"MessengerServiceCometImpl" .
The error become the import:

import org.apache.catalina.CometEvent;
import org.apache.catalina.CometProcessor;

I think I must add lybrary, but I don't know it.