Unlikely to be able to check in with JL, unless you are coming in on a connecting JL flight on the same PNR.

HA still operates like it's the 1980s, especially after the latest massive reservations systems downgrade (obvious cheapening by removing what little self-service features there were), so there is no OLCI functionality and you can't even see or select your seats a week or less before flight.

You will 99% likely have to wait until the HA check-in opens. Good luck.