We have two classes called Query and they are not related.
com.hp.hpl.jena.query.Query
(in ARQ, part of the API)
com.hp.hpl.jena.graph.query.Query
(in Jena, not API but is SPI,
suited to RDQL but not SPARQL)
Proposal: rename ....graph.query.Query as "GQuery".
Andy
