I know a few other languages that have similar syntax to Java (like C++) so it's pretty easy for me to understand Java code someone else has written.
I used JAD to partially decompile the server to try and understand how parts of it worked and what the various classes did, then used a bytecode editor to actually make the modifications to the classes.
How did you do this?
And check the archive's portals out, they can tp people.
Anyway, editing the code probably is better for minor stuff, like this or sunlight.
Vs something like a portal system.
Quality of output = Skill * Effort
I used JAD to partially decompile the server to try and understand how parts of it worked and what the various classes did, then used a bytecode editor to actually make the modifications to the classes.