 Copyright (c) Bruce Eckel, 1998
 Source code file from the book "Thinking in Java"
 All rights reserved EXCEPT as allowed by the
 following statements: You can freely use this file
 for your own work (personal or commercial),
 including modifications and distribution in
 executable form only. Permission is granted to use
 this file in classroom situations, including its
 use in presentation materials, as long as the book
 "Thinking in Java" is cited as the source. 
 Except in classroom situations, you cannot copy
 and distribute this code; instead, the sole
 distribution point is http:www.BruceEckel.com 
 (and official mirror sites) where it is
 freely available. You cannot remove this
 copyright and notice. You cannot distribute
 modified versions of the source code in this
 package. You cannot use this file in printed
 media without the express permission of the
 author. Bruce Eckel makes no representation about
 the suitability of this software for any purpose.
 It is provided "as is" without express or implied
 warranty of any kind, including any implied
 warranty of merchantability, fitness for a
 particular purpose or non-infringement. The entire
 risk as to the quality and performance of the
 software is with you. Bruce Eckel and the
 publisher shall not be liable for any damages
 suffered by you or any third party as a result of
 using or distributing software. In no event will
 Bruce Eckel or the publisher be liable for any
 lost revenue, profit, or data, or for direct,
 indirect, special, consequential, incidental, or
 punitive damages, however caused and regardless of
 the theory of liability, arising out of the use of
 or inability to use software, even if Bruce Eckel
 and the publisher have been advised of the
 possibility of such damages. Should the software
 prove defective, you assume the cost of all
 necessary servicing, repair, or correction. If you
 think you've found an error, please email all
 modified files with clearly commented changes to:
 Bruce@EckelObjects.com. (Please use the same
 address for non-code errors found in the book.)
