L2J Server

I want ask one thing... if I got a server alredy compile,there's a way for apply a patch on it?
If I use an decompiler how can I recompile it?

Sorry for all my stupid question and for my bad english! xD

you cant apply a patch on a decompiled source. patches are done from the svn source code and can be applied only on these.

you have to download sources from the l2j svn repository, and then apply the patch on it, then build it with ant.

thx a lot janiii

but if I want try edit by hand a .class file how can I can I save it? I had try a decompiler but it save me a file only in .java

You cant do it using decompiler, download from svn, there you can edit it.