source search tool for jdk ???

[Brad Wetmore]

 > are there any web-based source code search tools for looking up
 > Java classes/methods/etc within the jdk, like there are for Solaris,
 > that can tell you where something is defined, and where it is used,
 > and lets you click to the source code ?

Have you looked at OpenGrok?

     http://www.opensolaris.org/os/project/opengrok/

To see it in action on the opensolaris codebase:

     http://cvs.opensolaris.org/source/

FILE FORMATS
      OpenGrok can grok various program file formats like C, C++, Shell
      Scripts like ksh, sh, Perl, Java, Java Class files, JAR files, ELF
      files, troff man pages, file archives like Zip, Gzip, BZip2, Tar
      and meta language files like XML, SGML or HTML.

Brad