Debian Java FAQ.
Chapter 10 - Other Java alternatives for Debian
If the Java packages provided in Debian are not sufficient for your needs you
might need to take a look at other alternatives. Please understand that these
alternatives are not supported by the Debian project directly, you might get
help, however, from the debian-java mailing list if you encounter issues with
them.
Some of the alternatives presented use Debian packages which is convenient,
since the user/administrator does not need to care on installation issues.
However, mixing packages that come from a source which is not the Debian
project might cause conflicts with your installation some times. Of course,
Debian tries to integrate as many free software efforts as possible, so some of
the alternatives described below might (if license permits) be included in
Debian in the near future.
10.1 Java programs not yet available on Debian
The following are programs that have not yet been packaged for Debian nor is
there an installer. There are quite a lot Java programs out there and this
list is not an exhaustive list, it only includes programs that might
be packaged for Debian or those that someone is working on an installer for:
BlueJ. A development environment for Java with editor, compiler, virtual
machine and debugger. See http://bluej.monash.edu.au/