I am attempting to upgrade to Asterisk 16.5 and am getting an error in Asterisk-java that it cannot identify the version of Asterisk. I posted the issue on the Asterisk-java forum 2 months ago and there has been no activity or updates on the site. Is there something else being used in its place?
Yes, Asterisk-Java is still being used and still being developed. Most of the activity has just been moved over to their GitHub repository (https://github.com/asterisk-java/asterisk-java).
There is even an open issue related to this where the developers of Asterisk-Java indicated they are using it in production with Asterisk 16 https://github.com/asterisk-java/asterisk-java/issues/293