How can I instrument a war file and view code coverage when deployed on JBoss?

I have a series of tests that run against the API of a a large system deployed to a JBoss server. I would like to measure the code coverage of the tests on the system on the JBoss server. Is there a way I can instrument the war file and get code coverage when it is deployed on the Jboss server?

To be clear what I am looking for is coverage numbers for the code in the war file.

Currently for code coverage from unit tests I use Jacoco/SonarQube. The project is in Maven.

Thanks.