void isAddressAvailable(String ip)

{ 

        try

        { 

                InetAddress address = InetAddress.getByName(ip);//ping this IP 

                if(address instanceof java.net.Inet4Address)

                { 

                        System.out.println(ip + ” is ipv4 address”); 

                }

                else if(address instanceof java.net.Inet6Address)

                { 

                        System.out.println(ip + ” is ipv6 address”); 

                }

                else

                { 

                        System.out.println(ip + ” is unrecongized”); 

                } 

                if(address.isReachable(5000))

                { 

                        System.out.println(“SUCCESS – ping ” + IP + ” with no interface specified”); 

                }

                else

                { 

                        System.out.println(“FAILURE – ping ” + IP + ” with no interface specified”); 

                } 

                System.out.println(“\n——-Trying different interfaces——–\n”); 

                Enumeration<NetworkInterface> netInterfaces = etworkInterface.getNetworkInterfaces();    

                while(netInterfaces.hasMoreElements())

                {    

                        NetworkInterface ni = netInterfaces.nextElement();    

                        System.out.println(“Checking interface, DisplayName:” + ni.getDisplayName() + “, Name:” + ni.getName());

                        if(address.isReachable(ni, 0, 5000))

                        { 

                                System.out.println(“SUCCESS – ping ” + ip); 

                        }

                        else

                        { 

                                System.out.println(“FAILURE – ping ” + ip); 

                        }

                        Enumeration<InetAddress> ips = ni.getInetAddresses();    

                        while(ips.hasMoreElements())

                        {    

                                System.out.println(“IP: ” + ips.nextElement().getHostAddress());   

                        } 

                        System.out.println(“——————————————-“); 

                } 

    }

        catch(Exception e)

        { 

                System.out.println(“error occurs.”); 

                e.printStackTrace(); 

        }       

 }