code: static public char normalize(char input, int format) {
          if (NORMALIZE_LOWER == format) {
              return toLower(input);
          }
          if (NORMALIZE_UPPER == format) {
              return toUpper(input);
          }
          return input;
      }
docs: Take the input character and normalize based on the input format.
  
  @param input
  @param format
  @return normalized character.