From http://www.ppcm.org/juno/java/Deboggle/ Reconstituted java sources from the class files in this directory are to be found in *.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