ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.
One of a set of tools we're offering as a way to say thank you for being a part of the community.
I would advise to you read up the Documentation On Java 1.1.x. It gives pretty helpful info on Java and Package name.
in your scenario make sure :
you are in the root directory.. c:\
give the cmd :
rmic rmibook.timeserver.TimeSer
hope it helps