\documentclass[fontsize=12pt]{scrartcl}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackag[ngerman]{babel}
\usepackage{listings}
\usepackage{scrpage2}
\pagestyle{scrheadings}
\usepackage{xcolor} % veraltet  -> xcolor
\usepackage{url}
\usepackage{graphicx}
\begin{document}
 Test
\end{document}