aca hay algo para iniciar
http://j-integra.intrinsyc.com/support/com/doc/other_examples/Crystal_Reports.htm
http://www.developers.net/tsearch?searchkeys=tutorial+for+java+crystal+reports+connection
http://publib.boulder.ibm.com/infocenter/iadthelp/v7r0/index.jsp?topic=/com.businessobjects.integration.eclipse.devtools.doc/developer/Walkthrough9.html