Github user afs commented on the issue:
https://github.com/apache/jena/pull/189
The better fix is to initialize in `NodeFactory` (and `Node` for legacy
reasons) only. I have tested this in a build.
There is little point in a specific test because tests run in the overall
suite; it's almost confusing to have a test that doesn't. With initialization
in `NodeFactory` this will get tested anyway!
Also, it would help to unroll ARQConstants (for RDF, RDFS, OWL, XSD) so it
does not need JenaSystem.init and then it is, with care, init-safe.
See PR#192 for that all made real.
The original example works when run separately to ensure minimal system
initialization.
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