Add the following fragment to your pom file to execute the rmic plugin as part of the "process-classes" phase. Modify the class file(s) specified to your own classes.
<project> ... <build> <plugins> <plugin> <groupId>org.freehep</groupId> <artifactId>freehep-rmic-plugin</artifactId> <version>2.0-SNAPSHOT</version> <executions> <execution> <goals> <goal>generate</goal> </goals> <configuration> <classes> <class>com.yourcompany.YourClass</class> <class>...</class> </classes> <keep>true</keep> </configuration> </execution> </executions> </plugin> </plugins> </build> ... </project>