Upgrade to RAP 3.28 / Java 17

[ReneKellerAI]

Would it be possible to upgrade to the current Version of RAP (3.28) with Java 17 support? We're looking forward to updating our stack.

[ifurnadjiev]

Yes... There are no breaking changes in the last RAP release. I don't expect any problems to upgrade RAP framework by keeping the tabris bundle(s) as it is.