Manifestly Dashing

DashO is a code obfuscator for Java. Today it wasted my time. It will happily read in a jar file and use the manifest to find the entrypoint. It also gives you the option of writing its output to a jar file. I made the mistake of thinking that this new jar would also contain a manifest. It doesn't.
So it's probably easier to get DashO to output to a directory and ask Ant to package the files how you want them.

Going over the docs, it looks like you can specify a manifest in the config file, but I didn't see anything in the GUI.