Java Utililty Methods InetAddress Create

Vector getActiveInterfaceInetAddresses()
get Active Interface Inet Addresses

Vector<InetAddress> CurrentInterfaceIPs = new Vector<InetAddress>();
try {
 for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en
 .hasMoreElements();) {
 NetworkInterface intf = en.nextElement();
 for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
 InetAddress inetAddress = enumIpAddr.nextElement();
 if (!inetAddress.isLoopbackAddress()) {
...

List getAddressInfoFindAll(Function convertValue, Predicate doBreak)
get Address Info Find All

Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
List<String> findAll = new ArrayList<>();
END: while (networkInterfaces.hasMoreElements()) {
 NetworkInterface nextElement = networkInterfaces.nextElement();
 if (nextElement.isVirtual())
 continue;
 if (nextElement.isLoopback())
 continue;
...

int getAddressPriority(InetAddress addr)
get Address Priority

if (addr.isLoopbackAddress() || addr.isAnyLocalAddress() || addr.isMulticastAddress())
 return 0;
byte[] octets = addr.getAddress();
if ((octets[0] == 10) || (octets[0] == (byte) 172 && octets[1] >= 16 && octets[1] <= 32)
 || (octets[0] == (byte) 192 && octets[1] == (byte) 168))
 return 1;
return 2;

String getAddrInfo(InetAddress pAddr)
get Addr Info

String ret = pAddr.getHostName() != null ? pAddr.getHostName() + " (" + pAddr.getHostAddress() + ")"
 : pAddr.getHostAddress();
ret += " [site-local: " + pAddr.isSiteLocalAddress() + ", link-local: " + pAddr.isLinkLocalAddress()
 + ", lb: " + pAddr.isLoopbackAddress() + "]";
NetworkInterface nif = NetworkInterface.getByInetAddress(pAddr);
ret += " -- nif: " + getNetworkInterfaceInfo(nif);
return ret;

List getAllInetAddress(final String interfaceName)
get All Inet Address

final List<InetAddress> ret = new ArrayList<>();
final Enumeration<NetworkInterface> netInterfaces = getInterfaces(interfaceName);
while (netInterfaces.hasMoreElements()) {
 final NetworkInterface networkInterface = netInterfaces.nextElement();
 for (final Enumeration<InetAddress> loopInetAddress = networkInterface
 .getInetAddresses(); loopInetAddress.hasMoreElements();) {
 final InetAddress tempInetAddress = loopInetAddress.nextElement();
 ret.add(tempInetAddress);
...

Set getAllIPv4InetAddresses()
Get all the local IPV4 addresses without the loopback one

Set<Inet4Address> result = new HashSet<Inet4Address>();
Set<NetworkInterface> iset = getAllInterfaces();
for (NetworkInterface networkInterface : iset) {
 Enumeration<InetAddress> e = networkInterface.getInetAddresses();
 while (e.hasMoreElements()) {
 InetAddress elem = e.nextElement();
 if (elem instanceof Inet4Address) {
 result.add((Inet4Address) elem);
...

Set getAllLocalIPv4InetAddresses()
Get all the IPv4 InetAddress of the local host which are not loopback ones

Set<Inet4Address> result = new HashSet<Inet4Address>();
Set<NetworkInterface> iset = getAllLocalInterfaces();
for (NetworkInterface networkInterface : iset) {
 Enumeration<InetAddress> e = networkInterface.getInetAddresses();
 while (e.hasMoreElements()) {
 InetAddress elem = e.nextElement();
 if (elem instanceof Inet4Address) {
 result.add((Inet4Address) elem);
...

InetAddress getBroadcast(InetAddress address)
Gets the broadcast address for the network interface identified by the given address.

NetworkInterface inter = getInterface(address);
if (inter != null) {
 for (InterfaceAddress iaddr : inter.getInterfaceAddresses()) {
 if (iaddr.getAddress().equals(address)) {
 return iaddr.getBroadcast();
return null;

byte[] getBytes(InetAddress addr, int port)
Returns the IP:Port as byte array.

if (!isValidPort(port)) {
 throw new IllegalArgumentException("Port out of range: " + port);
byte[] address = addr.getAddress();
byte[] dst = new byte[address.length + 2];
System.arraycopy(address, 0, dst, 0, address.length);
dst[dst.length - 2] = (byte) ((port >> 8) & 0xFF);
dst[dst.length - 1] = (byte) ((port) & 0xFF);
...

int getClassPart(InetAddress ip, int partNumber)
Returns the n-th part of an InetAddress.

String[] parts = ip.getHostAddress().split("\\.");
String part = parts[partNumber];
return new Integer(part).intValue();