One important thing though:

You should really consider replacing Oracle JDK with Temurin OpenJDK in your text (as Joel D Reid already wrote) because using the latest versions of Oracle JDK might be illegal according to Oracle’s No Fee Terms and Conditions licence†.

† British spelling in OSM context; I mostly prefer American even though I’m from Germany.

A big thank you from me for helping me to get JOSM running with good performance on my iMac M1 (2021)!

Besides, more people are going to find this post now because I got here from my help topic in the OSM Community forum.