From: Bobby Bissett <Robert.Bissett_at_Sun.COM>
Date: Fri, 18 Dec 2009 20:45:47 -0500

Another option for answering this:

https://jarsearch.dev.java.net/servlets/ProjectDocumentList

Point it to a directory, turn on the recursive search option, and
search. All lower case text means a case-insensitive search (like in
emacs).

Cheers,
Bobby