private static void addOrUpdateAccount(String account, String password, String level)
    {
        try (Connection con = L2DatabaseFactory.getInstance().getConnection();
            PreparedStatement ps = con.prepareStatement("REPLACE accounts(login, password, accessLevel) VALUES (?, ?, ?)"))
        {
            MessageDigest md = MessageDigest.getInstance("SHA");
            byte[] newPassword;
            newPassword = password.getBytes("UTF-8");
            newPassword = md.digest(newPassword);

            ps.setString(1, account);
            ps.setString(2, Base64.getEncoder().encodeToString(newPassword));
            ps.setString(3, level);
            if (ps.executeUpdate() > 0)
            {

                System.out.println("Account " + account + " has been created or updated");
            }
            else
            {
                System.out.println("Account " + account + " does not exist");
            }
        }
        catch (Exception e)
        {
            System.out.println("There was error while adding/updating account:");
            System.out.println(e.getMessage());
        }
    }