code: public boolean isNumeralPunctuation(final String input) {
          for (int i = 0; i < input.length(); i++) {
              if (!isNumeralPunctuation(input.charAt(i))) {
                  return false;
              }
          }
          return true;
      }
docs: Numeral punctuation predicate
  
  @param input string to test
  @return true if and only if c is a numeral punctuation string