static private String database = "fuhrpark";
	static private String conn = "jdbc:mysql://localhost/";
	static private String user = "root";
	static private String password = "";

	static private Connection connection;

	static Connection getConnection()
	{
		if (connection==null)
		{
			try
			{
				// lade Treiberklasse
				Class.forName("com.mysql.jdbc.Driver");

				// erzeuge Verbindung zur DB mit den angegebenen Daten
				connection = DriverManager.getConnection(conn+database+user+password);
			}
			catch (ClassNotFoundException e)
			{
				e.printStackTrace();
			}
			catch (SQLException e)
			{
				e.printStackTrace();
			}
		}
		return connection;
	}