Installing the Java Runtime environment or Java Software Development kit on Debian Linux. Enjoy.
Read it at Johan Louwers blog
At this point in time there are some discussions in the Debian development community together with Sun Microsystems to try to change some of the legal boundaries of Sun Java to make it possible for Debian to include it in there distribution however at this moment no Java is included as a standard Debian package.
As some applications require you to have a Java virtual machine present you can be forced to install this on your Debian Linux system