Is there a quick way to delete a file from a Jar / war without having to extract the jar and recreate it?

Question

So I need to remove a file from a jar / war file. I was hoping there was something like \"jar -d myjar.jar file_I_donot_need.txt\"

But right now the only way I can

Answer 1

zip -d file.jar unwanted_file.txt

jar is just a zip file after all. Definitely much faster than uncompressing/recompressing.