This exmample will only work when run as a junit test or in an IDE.

Trying to run using:

mvn exec:java -Dexec.mainClass="com.knowledgegraphnavigator.KGN"

will not work because "mvn exec" works by only having the jar file plexus-classworlds-2.6.0.jar (or some other version) on the CLASSPATH. This prevents the dependency

   <dependency>
      <groupId>com.markwatson</groupId>
      <artifactId>nerdbpedia</artifactId>
      <version>1.1-SNAPSHOT</version>
    </dependency>

from a previous chapter from being able to load entity definition text files from its packaged jar file.