The Java examples are meant to be run from a Web server. Athena isn't
set up to run individual Web servers, but you can run a Java client
and server on the same machine for demo purposes.

Due to a design limitation, the user needs write permission within the
java part of the software tree. To deal with this, we make a local
copy of the installation tree rooted in a temporary location
/var/tmp/demo, To completely delete this when you are done, do:

rm -fr /var/tmp/demo

To run the Java demos this way:

add opendx_v4.4
source /mit/opendx_v4.4/envsetjava
cd /var/tmp/demo/java/server/bin
./startserver (to start Java server)
./stopserver (to stop Java server)

Start Firefox by running:

dxdemo-firefox (this uses a script that sets environment variables for Java)

go to location:

file:///var/tmp/demo/java/htmlpages/Status.html

and try clicking on links to the various examples. These may work sometimes
and not others. You may find that a process dxexec is using up a large fraction
of the cpu- this seems to indicate that the system is "hung"- to recover kill
the dxexec process, then stop and restart the server as above.