reverse dns

java

 try {
            final String ip = "83.231.226.12";//"173.194.40.143";

            //InetAddress inetAddr = InetAddress.getByName("192.168.0.255");
            InetAddress inetAddr = InetAddress.getByName(ip);

            // Get the host name
            String hostname = inetAddr.getHostName();

            // Get canonical host name
            String canonicalHostname = inetAddr.getCanonicalHostName();

            printDns();
            System.out.println("Hostname: " + hostname);
            System.out.println("Canonical Hostname: " + canonicalHostname);
            reverse(null);
            test2(null);
            System.out.println("rev: " + getRevName(ip));
            //System.out.println("DNS Hostname: " + getHostName(ip));

        } catch (UnknownHostException e) {
            System.out.println("Host not found: " + e.getMessage());
        }