(Note: Extracted from an email between Polaris/Northern Dragons 
to Syntax/Northern Dragons Tue, 6 Jul 2004) 

NOTE: this is in regards to the j3d source code.

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It's possible for to put together an application in Java 3d in under 4kb.  
My experiments for an interactive application have been under the 2kb mark.  
1,644 bytes for the "simpledemo", 2,078 bytes for the material demo. [as jar's]

Step #1 - Download the java sdk.
http://java.sun.com/j2se/1.4.2/download.html
[This one: J2SE v 1.4.2_05  SDK  includes the JVM technology]

Step #2 - Download the J3D environment
http://java.sun.com/products/java-media/3D/download.html
[select PROCEED WITHOUT LOGIN]
Java 3D for Windows (DirectX Version) SDK for the JDK (includes Runtime)
(java3d-1_3_1-windows-i586-directx-sdk.exe, 6.52 MB)
Install that too.

Now.. the majour pain with the source code - is that they are saved as rtf files.  
Don't ask me why.  Load them three .java files in word or wordpad, and save them 
as text files again.  Wordpad will probable save your .java files as .txt; so 
you might have to delete the .java file, and rename.txt files to .java files.

In addition - the code will freak out looking for package org.pilone.j3ddemo;.
In each.java file - comment that line out //

Once you've reverted them to plain text; you can compile them.  You will
probably want to add C:\j2sdk1.4.2_05\bin to your path.  To complile:

javac filename.java

Once compiled; you will get a .class file. You can run them but you must run
them as follows [Replace behavior demo with what have you].
java -classpath "." BehaviorDemo

If you error - you might get this:
Exception in thread "main" java.lang.NoClassDefFoundError: BehaviorDemo/class
Make sure you didn't type:
java -classpath "." BehaviorDemo.class

If you get:
Exception in thread "main" java.lang.NoClassDefFoundError: BehaviorDemo (wrong
name: org/pilone/j3ddemo/BehaviorDemo)

Then you neglected to comment out the package name.

Compressing to a jar file is pretty simple too.  All you need to do is make a
manifest file.  These are called manifest.mft.  For Material demo it looks
exactly like this:

Manifest-Version: 1.0
Main-Class: MaterialDemo
Classpath: .\MaterialDemo.jar

jar cvfm MaterialDemo.jar manifest.mft MaterialDemo.class

Looks like it uses zip compression.

Anyway - useable.. possibly.  Interesting to play with.. 4 sure :-)