Ciao has a library call "javart" that has a capability to call a java class or module - according to the Ciao documentation - inside prolog using its predicates. I tried to use it but unfortunately no luck and no samples inside Ciao folder .. just only one and it's complicated and it can not be run.
So please can you provide me with samples or documentation - because current online documentation is just hints - that can provide a full scenario of creation and calling.