Navigate to the SimplestHelloWorld directory and execute:

mvn package

If the compile is successfully packaged, the result will be available in: SimplestHelloWorld/target/SimplestHelloWorld-0.0.1.war .

Copy the package file into JBOSS_HOME/server/default/deploy.

Start the JBoss Application Server (if it is not already running).

Create a new portal page and add the portlet to it.