Yes, you can have a look here: https://google.github.io/styleguide/javaguide.html
Please add a line before this comment begins for separation.
Some format changes left.
Ah I see what you mean. Maybe it doesn't check master for such channges.
Go on 'Files changed' tag above, you'll see it's still there. You need to push your changes to your git repo, otherwise they won't show up. See git status.
Maybe you did not push them? Gitea should™ mark it outdated once you changed something there.
first: style, put a whitespace after if, for reference see the existing code. Secondly, don't use == false, use !net.minecraft.server.MinecraftServer.getAllowNether().
Sorry for the delay, I was busy with work. Need to test this later this day, but you can already fix some style and best practise things.
first: style, put a blank before you start a new function, for reference see the existing code.
Unnecessary whitespace, please remove this.
What do you mean by switched around?