Verify if String is hexadecimal
Horrible abuse of exceptions. Don’t ever do this! (It’s not me, it’s Josh Bloch’s Effective Java). Anyway, I suggest private static final Pattern HEXADECIMAL_PATTERN = Pattern.compile(“\\p{XDigit}+”); private boolean isHexadecimal(String input) { final Matcher matcher = HEXADECIMAL_PATTERN.matcher(input); return matcher.matches(); }