It's completely broken: missing org/mozilla/javascript/tools/shell/Main

i can confirm this in feisty:

$ rhino
Exception in thread "main" java.lang.NoClassDefFoundError: org.mozilla.javascript.tools.shell.Main
   at gnu.java.lang.MainThread.run(libgcj.so.70)
Caused by: java.lang.ClassNotFoundException: org.mozilla.javascript.tools.shell.Main not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:/usr/share/java/js.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
   at java.net.URLClassLoader.findClass(libgcj.so.70)
   at gnu.gcj.runtime.SystemClassLoader.findClass(libgcj.so.70)
   at java.lang.ClassLoader.loadClass(libgcj.so.70)
   at java.lang.ClassLoader.loadClass(libgcj.so.70)
   at gnu.java.lang.MainThread.run(libgcj.so.70)
$ unzip -l /usr/share/java/js.jar | fgrep -i tools # no output...
$ apt-cache show rhino
Package: rhino
Priority: optional
Section: interpreters
Installed-Size: 584
Maintainer: Ubuntu Core Developers <email address hidden>
Original-Maintainer: Debian Java Maintainers <email address hidden>
Architecture: all
Version: 1.6.R5-0ubuntu1
Depends: java-gcj-compat | java1-runtime | java2-runtime
Suggests: rhino-doc
Filename: pool/main/r/rhino/rhino_1.6.R5-0ubuntu1_all.deb
Size: 487672
MD5sum: c6ff406eee7b3351d6b1e50d74299559
SHA1: 8e1a96115f0cfc79e803e8aa5b82941ec817d752
SHA256: 4947c8359209281df1f7f53c2bd0277293b1adf49e055370130b19c7e0300bfd
Description: JavaScript engine written in Java
 Rhino is an open-source implementation of JavaScript written
 entirely in Java. It is typically embedded into Java applications
 to provide scripting to end users.
Bugs: mailto:<email address hidden>
Origin: Ubuntu

A work-around for fiesty while the bug is addressed, essentially involves re-packaging the rhino package from source. The steps are as follows:

Install package building dependencies:
# sudo apt-get install fakeroot debhelper cdbs java-gcj-compat-dev

Get the source:
# apt-get source rhino

Revert the toolsrc patch:
# cd rhino-1.6R5/
# rm debian/patches/02-dont_build-toolsrc.patch

Build:
# dpkg-buildpackage -rfakeroot

Install:
# cd ..
# sudo dpkg -i rhino_1.6.R5-0ubuntu1_all.deb

You may have to avoid updating the official distribution of the rhino package for a while, atleast until a version newer than 1.6R5-0ubuntu1 is released. Keep a copy of your re-packaged rhino .deb file because if you inadventently do update, then remove/purge the update and install the re-packaged .deb is required.

Hope this helps :D

Fixed in gutsy

Please reqeust a sync from Debian; it's already fixed there.

This is not fixed in Gutsy!

I did this to fix this problem.

Copy original Rhino's js.jar to /usr/share/java/js-1.6R7.jar

Then,
sudo rm /usr/share/java/js.jar
sudo ln -s /usr/share/java/js-1.6R7.jar /usr/share/java/js.jar

requested a sync for hardy.

This should be fixed in Hardy.

Are there plans to actually fix this in Gutsy? I'm experiencing the problem as well. Having everyone re-package rhino seems a bit harsh.

Rhino is main package in Feisty. I also wish, this problem will be fixed in Feisty and Gutsy.

The description created by CL has solved the problem on my system (Gutsy). (https://bugs.edge.launchpad.net/ubuntu/+source/rhino/+bug/93885/comments/2)

But the ant package should be included as well.

>>Install package building dependencies:
>># sudo apt-get install fakeroot debhelper cdbs java-gcj-compat-dev ant
>>
>>......

Applying this fix causes freemind to hang while starting up in its splash screen.

Reinstalling freemind didn't fix the problem.

Eclipse is also broken.