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\begin{document}
\title{\nJava}
\author{David von Oheimb \\ Tobias Nipkow}
\maketitle
\begin{abstract}\noindent
These theories define {\nJava}, a very small fragment of the programming
language Java (with essentially just classes) derived from the one given
in \cite{NipkowOP00}.
For {\nJava}, an operational semantics is given as well as a Hoare logic,
which is proved both sound and (relatively) complete.
The Hoare logic supports side-effecting expressions and
implements a new approach for handling auxiliary variables.
A more complex Hoare logic covering a much larger subset of Java is described
in \cite{DvO-CPE01}.\\
See also the homepage of project Bali at \url{http://isabelle.in.tum.de/Bali/}
and the conference version of this document \cite{NanoJava}.
\end{abstract}
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