Updating class

[dannycrafts]

Hello all,

I'm trying to figure out how I can update (or reload) a class file during runtime. Instead of replacing the class file in the jar manually, I'd like to 'replace' it at runtime. This is what I got so far, even though it doesn't seem to actually do what I expect to see when it works:

URL url = getClass().getResource( "/com/dannycrafts/classes/ThreadLoginVerifier.class" );
ClassLoader classLoader = URLClassLoader.newInstance( new URL[]{ url } );
classLoader.loadClass( "net.minecraft.server.ThreadLoginVerifier" );

As you can see is "/com/dannycrafts/classes/ThreadLoginVerifier.class" my own version of "net.minecraft.server.ThreadLoginVerifier".

I would think that this would do the job, but I'm not quit sure if it does.

Also, I am afraid that just a new version of the class is loaded and that everything that was using the class before is still using the old version.

Can anyone help me with this if you know what I'm trying to achieve?
Thanks.

[Norm]

I don't know of a way to replace a previously loaded class. If the JVM has links to the current version of a class, replacing the current version could break the system.
Can you make your version available BEFORE the other version is loaded so your version is the one loaded?

[dannycrafts]

Alright, I guess I just have to replace the class files manually. :)