I'll try, would you want the players to give themselves nicknames in the process or do they need to be the player's name?
I learned all sorts of other languages before switching to java like Lua, JS, Python, ruby. Once you learn a few languages it's not that hard to...
You could reinstall the buycraft.jar. It probably got broken when you forced it to stop the install, but that one command works is not usual.
So your problem is that players are in a world when you want to delete it and you can't delete it because there are players on the other world?...
What plugins/server are you using? Does it effect the world save or anything?
I would look at mwParkour2. It looks like it stops hunger loss.
The only limit is the clantag length.
Added source code!
EDIT by Moderator: merged posts,...
I'm actually almost done with this plugin, I just need to test it more with more than one person.
It's a simple plugin that adds in clans. Clans...
Separate names with a comma.