code: private static String stripLeadingNonNumeric(String str) {
          for (int x = 0; x < str.length(); x++) {
              if (Character.isDigit(str.codePointAt(x))) {
                  return str.substring(x);
              }
          }
          return null;
      }
docs: Strips leading non-numeric values from the start of the string. If no
  numbers are present this will return null.
  
  @param str the string to modify
  @return the string without leading non-numeric characters