Hi guys,

I am wondering how would I copy files into a jar, as well as delete folders from that jar.

Would I have to decompile it then recompile it?

Would sharpziplib do the trick?

Any help is appreciated,

-Toxikr3

Since JAR files are based on the ZIP archive, you should be able to use sharpziplib to extract the contents of the JAR file.
And using that library, theoretically you should also be able to manipulate the archive by deleting content. If you know where it is.

That's the best advice I can give. I have no direct experience of this.