web.xml is not requied in Java EE 6. It sounds like the app didn't deploy. Could you put your server.log in a pastebin, and link it?

7:31 a.m., Friday April 26

Email address: pmuir@bleepbleep.org.uk | IP address: 82.44.8.147

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Pete Muir’s comment is in reply to Suresh Pathak (Guest):

Hi,

I am trying to run this application,But getting

HTTP Status 404 - /jboss-as-helloworld/HelloWorld
type Status report
message /jboss-as-helloworld/HelloWorld
description The requested resource ...