JOLAP was not correctly implemented by any vendors and has been quietly forgotten. Even though Oracle now owns both the Oracle OLAP Option (which has a proprietary Java OLAP API) and Essbase (which also has a proprietary Java OLAP API), we do not expect JOLAP to be resurrected.
I would also like to recommend a book on OLAP.The
book is available on Amazon & you can buy an e-book directly from the publisher by writing
OLAPWorldPress@gmail.com.