code: private boolean skipBlankAndComma()
      {
          boolean commaFound = false;
          while (!isEOS())
          {
              int c = str.charAt(idx);
              if (c == ',')
              {
                  if (commaFound)
                      return true;
                  else
                      commaFound = true;
              }
              else if (!isBlank(c))
              {
                  return true;
              }
              ++idx;
          }
          return false;
      }
docs: skip all blank and at best one comma, return true if there not EOS