accession builder is two Java scripts - calling them programs would be overdoing it! - that index a file system and then use that filesystem to recreate a different file structre (usually from an accession). The idea is that the indexed filesystem does not contain any confidential or important data that could be at risk when test processing acccessions.
With all them on your classpath, both should just compile and run!
These are quick and dirty scripts for a single purpose, so don't expect wonders! :-)
Should you want to use them, there are a couple of variables that'll need setting - check the code and you'll see what I mean! :-)
There isn't one to speak of but please note that one method came from Grant Ingersoll's Solr demo application, which is Apache licensed, so I guess it all should be. Who knows? It aint big enough a thing to worry about here!