Guavac is a compiler for the Java language, written by Effective Edge
Technologies and distributed under the Gnu Public License.  You should feel
free to use, copy and modify it, based on the terms in the COPYING file
included in this distribution.
We are distributing guavac free of charge in the hopes that other people will
find it useful and possibly enhance its utility in turn.

Guavac should produce correct bytecode for valid Java input, but you may
encounter some difficulties in compiling guavac itself, due inadequate
tools on some platforms.