An application server may already be running on host localhost

I'm working on a web project where JBoss Application Server is used for deployment. I'm getting the below message once I start the server.

An application server may already be running on host localhost

Web Poller found a running server at url http://localhost:8080

I couldn't find any entries on netstat command on process which uses port 8080.

Tried the solution mentioned in this question as well.