prep1: Create objects, they interact, do math for each other
prep2: Arrays in Java
prep3: Static variables and methods
prep4: Put objects into Array
prep5: How to use addon Java libraries like Colt

sim1: elementary simulation concepts.
sim2: more elementary simulation concepts.
sim3: Some advanced elementary simulation concepts.

in sim1, sim2, and sim3, I started learning how to
do javadoc documentation, so the doc directory
has some html output from javadoc.  Kinda promising,
really.

javaSwarm1: This introduces the usage of the Swarm
library, but it does not bring in any graphical
interface. It is intended to parallel the Objective-C
tutorial, which introduces "simpleObjCBug" before
it puts the GUI in.


javaObserverSwarm1: This puts in an Observer level
with a graphical interface.