I would like to do some testing with jCrystalReport library
Do you know if is possible to find an old but free and freely usable version of Crystal Report?
But if you are not satisfied with testing with the included jasperreports-6.7.1 version that comes with the B4J Library jJasperReports Library version 2 from 5 years ago, you can always consider purchasing the paid version with undoubtedly more and new functionalities. Looking at the release date of 5 years back, only a good chance that you will have to update the B4J library yourself or create a new wrapper for B4J.
But if you are not satisfied with testing with the included jasperreports-6.7.1 version that comes with the B4J Library jJasperReports Library version 2 from 5 years ago, you can always consider purchasing the paid version with undoubtedly more and new functionalities. Looking at the release date of 5 years back, only a good chance that you will have to update the B4J library yourself or create a new wrapper for B4J.
Which jasper 6.7.1 are you writing about?
If you are referring to the file contained in the jr_additional_libs file, that is not the program needed to create a new report