\documentclass[10pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{listings}
\usepackage{color}
\title{My title}
\author{Ruben Horn}
\date{\today}

\definecolor{mygreen}{rgb}{0,0.6,0}
\definecolor{mygray}{rgb}{0.5,0.5,0.5}
\definecolor{mymauve}{rgb}{0.58,0,0.82}

\lstset{ %
  backgroundcolor=\color{white},   % choose the background color
  basicstyle=\footnotesize,        % size of fonts used for the code
  breaklines=true,                 % automatic line breaking only at whitespace
  captionpos=b,                    % sets the caption-position to bottom
  commentstyle=\color{mygreen},    % comment style
  escapeinside={\%*}{*)},          % if you want to add LaTeX within your code
  keywordstyle=\color{blue},       % keyword style
  stringstyle=\color{mymauve},     % string literal style
}

\begin{document}
\maketitle
\tableofcontents
\newpage
\section{My section}
\subsection{My subsection}
Hello $\frac{1}{0}=\infty $ Document. $\int_0^\infty \! f(x)\, \mathrm{d}x$
\subsection{Code:}
\begin{lstlisting}[language=java]
public class MyClass{
	public static void main(String[] args){
		System.out.println("Hello, Document!");
	}
}
\end{lstlisting}
\subsection{Some more Code:}
\begin{lstlisting}[language=python]
def _init_():
	print("Hello, Snake!");
\end{lstlisting}
\subsection{...and finally some text:}
Some text
\begin{quote}
...to be, or [Tobi]? - Some British writer
\end{quote}
more text
\end{document}