diff --git a/doc/documentation.tex b/doc/documentation.tex
index b9c2558..db4680a 100644
--- a/doc/documentation.tex
+++ b/doc/documentation.tex
@@ -16,6 +16,39 @@
     filecolor=magenta,      
     urlcolor=cyan,
 }
+
+%for code listings
+\usepackage{listings}
+\usepackage{xcolor}
+\definecolor{ListingBackground}{HTML}{F8F8F8}
+\lstdefinestyle{mystyle}{
+		language=Java,			% default language
+		numbers=left,			% position of line numbers (left, right)
+		stepnumber=1,			% set number to each line
+		numbersep=5pt,			% 5pt between number and source code
+		numberstyle=\tiny,			% letter size of numbers
+		breaklines=true,		       	 % break lines if necessary (true, false)
+		breakautoindent=true,	        	% indenting after break line (true, false)
+		postbreak=\space,			% break line after space
+		tabsize=2,				% tabulator size
+		basicstyle=\ttfamily\footnotesize, % font style
+		showspaces=false,			% show space (true, false)
+		extendedchars=true,		% show all Latin1 characters (true, false)
+		captionpos=b,			% sets the caption-position to bottom
+		backgroundcolor=\color{ListingBackground}, % source code background
+		xleftmargin=10pt,		        % margin left
+		xrightmargin=5pt,		        % margin right
+		frame=single,			% border settings
+		frameround=ffff,
+		rulecolor=\color{darkgray},	% border color
+		fillcolor=\color{ListingBackground},
+		aboveskip=20pt,
+		keywordstyle=\color[rgb]{0.133,0.133,0.6},
+		commentstyle=\color[rgb]{0.133,0.545,0.133},
+		stringstyle=\color[rgb]{0.627,0.126,0.941}
+}
+\lstset{style=mystyle}
+
 \let\clearpage\relax
 
 \begin{document}