The Jadex rules applications package contains several example applications using rules.
'net.sourceforge.jadex:jadex-rules-applications:2.3'
<dependency>
<groupId>net.sourceforge.jadex</groupId>
<artifactId>jadex-rules-applications</artifactId>
<version>2.3</version>
</dependency>
<dependency org="net.sourceforge.jadex" name="jadex-rules-applications" rev="2.3"/>
"net.sourceforge.jadex", "jadex-rules-applications", "2.3"