public static boolean connect()
    {
        try
        {
                        Class.forName(DRIVER).newInstance();
                    con=DriverManager.getConnection(URL, LOGIN, PASSWORD);

        }
        catch(ClassNotFoundException ex){
            //System.out.print("Error " + ex.getMessage());
            JOptionPane.showMessageDialog(null, "Error " + ex.getMessage());
            return false;
        }catch(IllegalAccessException ex){
            //System.out.print("Error " + ex.getMessage());
            JOptionPane.showMessageDialog(null, "Error " + ex.getMessage());
            return false;
        }catch(InstantiationException ex){
            //System.out.print("Error " + ex.getMessage());
            JOptionPane.showMessageDialog(null, "Error " + ex.getMessage());
            return false;
        }catch(SQLException ex){
            //System.out.print("Error " + ex.getMessage());
            JOptionPane.showMessageDialog(null, "Error " + ex.getMessage());
            return false;
        }
        return true;
    }


//Мой вариант
    /**
     * Установка соединения с БД.
     */
    public void init(){
        try {
//settings.getDriverclass() - это com.mysql.jdbc.Driver
            Class.forName(settings.getDriverclass());
            String url = String.format("jdbc:%s://%s:%d/%s", settings.getDriver(), settings.getHost(), settings.getPort(), settings.getScheme());
            LOG.log(Level.SEVERE, url);
        //оно из настроек логин тащит
            String login = settings.getLogin();
        //пароль тащит
            String password = settings.getPassword();

            con = DriverManager.getConnection(url, login, password);
        } catch (SQLException ex) {
            LOG.log(Level.SEVERE, "Connenction failed", ex);
        } catch (ClassNotFoundException ex) {
            LOG.log(Level.SEVERE, String.format("DriverClass %s not found", settings.getDriverclass()), ex);
        }
    }