I’m not sure if this can be done, I using java_binary=/usr/lib/jvm/jdk1.8.0_311/bin/java so the forge server will run, I was wondering if I can run server on Java 8 and a plugin on Java 11. I already have Java 8, 11 and 16 running on my server. Just need to know if there was away to make a plugin use a higher Java then the server?

No I don’t think so, whichever version is used to call the parent, in this case Minecraft, is the version used to run whatever plugins or other requirements it needs.

ok, I thought the would of been the answer, guess I need to fork the plugin and see if I can re-code it for Java8