This is jikes, a java source to byte-code compiler.  The compiler has been
made available by IBM under their open-source license, please see:

for details.  To operate, the CLASSPATH environment variable must typically
be set to a colon-delimited list of source directories, class directories,
or zip files.  Note that jikes will complain if a non-existant directory or
file is specified in CLASSPATH.

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// This software is subject to the terms of the IBM Jikes Compiler Open"
// Source License Agreement available at the following URL:"
// http://www.ibm.com/research/jikes."
// Copyright (C) 1996, 1998, International Business Machines Corporation"
// and others.  All Rights Reserved."
// You must accept the terms of that agreement to use this software."