private static boolean isAnArgument(final String arg){
  return (arg.startsWith("-") && (arg.length() > 1) && !Character.isDigit(arg.charAt(1)));
}

private static boolean isAnArgument ( final String arg ) { return ( arg . startsWith ( "-" ) && ( arg . length ( ) > 1 ) && ! Character . isDigit ( arg . charAt ( 1 ) ) ) ; }
given a string like " - foo " or " - 5 " or " - 123 . mxml " , this determines whether the string is an argument or . . . not an argument ( e . g . numeral )
