Verify IPv4 and resolve hostname in Java

                String OFController = (String)configs.get(ConfigConstants.DEST_IP);
                String OFPort = (String)configs.get(ConfigConstants.CUSTOM);

                if (_validateIP(OFController) != true) {
                    logger.info("Attempting to resolve <" + OFController +
                            "> to a valid IP address");
                    try {
                        OFController = InetAddress.getByName(OFController).getHostAddress();
                    }  catch (Exception e) {
                        e.printStackTrace();
                        logger.error("Invalid Address <" + OFController +
                                "> Please enter valid IP-Address");
                        return false;
                    }
                }



    public boolean _validateIP(String ipAddress) {
        String[] octets = ipAddress.split("\\.");
        if (octets.length != 4) {
            return false;
        }
        for (String octect : octets) {
            int i = Integer.parseInt(octect);
            if ((i < 0) || (i > 255)) {
                return false;
            }
        }
        return true;
    }