Holy Cow, Java Serial Goodness!
I got my Arduino board today, and I went to check out the IDE. It's written in Java. Holy freakin' cow. Couldn't be more perfect because it's all written and released under the LGPL! I found the Serial.java in the SVN trunk, and I'm reasonably certain I can figure it out enough to use it. You wouldn't believe how happy I am right now. I need some breadboard and LED's.