Kenneth Tam describes a Scrabble program he hacked out as a University
project at this URL:

http://www.ece.uwaterloo.ca/~k2tam/Scrabble/contents.html

In this directory is his C++ code to generate a DAWG.

Reconstituted java sources from the class files in the Scrabble
sub-directory are to be found in Scrabble/*.jad

You should not assume that decompiled sources can be used to build a
working program; they are here only to allow you to study the methods
used in this code to help you write your own programs.

jad is an excellent *FREE* decompiler whose home page
is at: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html