code: public static String toInitialCase(String s) {
          if (isBlank(s)) return s;
          if (s.length() == 1) return s.toUpperCase();
          return s.substring(0, 1).toUpperCase() + s.substring(1);
      }
docs: Makes the initial letter upper-case.
  @param s the string
  @return first letter is now in upper-case