CirclePack, version 2.0, released 3/10/2009.
CirclePack, version 2.1, released 6/20/2009.
Copyright Ken Stephenson, University of Tennessee.

CirclePack_v2.0.jar is the first all Java version 
of the software package 'CirclePack'. It can often
be run, for example from the Desktop, by simple
double clicking. From the command line, execute

   java -jar CirclePack_v2.0.jar

The software requires Java 1.6 or later. It was created 
in Eclipse on a linux operating system. My Java version:

java version "1.6.0_07"
Java(TM) SE Runtime Environment (build 1.6.0_07-b06)
Java HotSpot(TM) Server VM (build 10.0-b23, mixed mode)

Caution: the 'icetea' JRE has severe graphics bugs, so 
the SUN version is preferrable.