If you define serveral JDK's in Jenkins you will get a drop-down list for the axis for a matrix build automatically with the JDK.

If you define serveral Maven version or serveral Ant or Groovy versions you won't get an entry in the axis drop down which means it is not that simple to create jobs which combine things like JDK and tools etc.

JDK's + Maven versions or
JDK's + Ant versions
Groovy versions + Maven Versions etc.

I would suggest to go the same way as with the JDK's that every tools which is configured in Jenkins like Groovy, Ant, Maven it should produce an entry in the axis drop down.