private static void evaluateAddress() {
        boolean notNull = (remoteAddress != null);
        if (notNull) {
            boolean nonEmpty = !(remoteAddress.equals(""));
            boolean containsOnlyLetters = true;
            for (int i = 0; i < remoteAddress.length() && containsOnlyLetters; i++) {
                containsOnlyLetters = Character.isLetter(remoteAddress.charAt(i));
            }
            validAddress = notNull && nonEmpty && containsOnlyLetters;
        } else {
            System.exit(0);
        }
    }