Java Utililty Methods InetAddress Create

List of utility methods to do InetAddress Create

  1. HOME
  2. Java
  3. I
  4. InetAddress Create

Description

The list of methods to do InetAddress Create are organized into topic(s).

Method

StringgetNetworkCIDR(InetAddress addr, short prefixLength)
get Network CIDR 
byte[] raw = addr.getAddress();
boolean isV6 = raw.length > 4;
int networkFields = prefixLength / 8;
for (int i = networkFields + 1; i < raw.length; i++) {
    raw[i] = 0x00;
int networkRemainder = prefixLength % 8;
if (networkFields < raw.length) {
...
StringgetNetworkInterface(InetAddress localAddress)
get Network Interface 
try {
    for (NetworkInterface ifc : Collections.list(NetworkInterface.getNetworkInterfaces())) {
        if (ifc.isUp()) {
            for (InetAddress addr : Collections.list(ifc.getInetAddresses())) {
                if (addr.equals(localAddress))
                    return ifc.getDisplayName();
} catch (SocketException e) {
return null;
NetworkInterfacegetNetworkInterfaceByIp(InetAddress inetAddress)
get Network Interface By Ip 
for (NetworkInterface ifc : getNetworkInterfaces()) {
    if (ifc.isUp()) {
        Enumeration e = ifc.getInetAddresses();
        while (e.hasMoreElements()) {
            InetAddress inetAddrAll = (InetAddress) e.nextElement();
            if (inetAddrAll.equals(inetAddress)) {
                return ifc;
return null;
NetworkInterfacegetNetworkInterfaceForRemoteIPAddress(InetAddress remoteAddress)
get Network Interface For Remote IP Address 
byte remoteAddressBytes[] = remoteAddress.getAddress();
Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
while (networkInterfaces.hasMoreElements()) {
    NetworkInterface currentInterface = networkInterfaces.nextElement();
    if (currentInterface.isLoopback()) {
        continue;
    for (InterfaceAddress address : currentInterface.getInterfaceAddresses()) {
...
intgetNextAliablePort(InetAddress address, int startport)
get Next Aliable Port 
int port = startport;
while (port < 65535) {
    try {
        Socket socket = new Socket(address, port);
        socket.close();
        port++;
    } catch (Exception ex) {
        return port;
...
intgetNextAvailablePort(InetAddress address, int port)
Return a port number that can be used to create a socket on the given address starting with the given port. 
ServerSocket socket = getNextServerSocket(address, port, 0);
int retval = -1;
if (socket != null) {
    retval = socket.getLocalPort();
    try {
        socket.close();
    } catch (IOException e) {
return retval;
StringgetOneDotPrefix(InetAddress addr)
get One Dot Prefix 
String textualPrefixAddr = addr.getHostAddress();
int firstDot = textualPrefixAddr.indexOf(".");
textualPrefixAddr = textualPrefixAddr.substring(0, firstDot);
return textualPrefixAddr;
longgetPing(InetAddress address, long timeout)
get Ping 
if (System.getProperty("os.name").startsWith("Windows")) {
    return pingWindows(address, timeout);
boolean reached = false;
long start = System.currentTimeMillis();
long end = (start - 1);
try {
    if (address.isReachable(Long.valueOf(timeout).intValue())) {
...
ListgetPrivateInetInetAddress()
get Private Inet Inet Address 
List<InetAddress> inetAddresses = new LinkedList<InetAddress>();
for (Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces(); e.hasMoreElements();) {
    NetworkInterface netInterface = e.nextElement();
    if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
        continue;
    for (InterfaceAddress address : netInterface.getInterfaceAddresses()) {
        InetAddress inetAddress = address.getAddress();
...
ProtocolFamilygetProtocolFamily(InetAddress address)
get Protocol Family 
if (address instanceof Inet4Address) {
    return StandardProtocolFamily.INET;
} else if (address instanceof Inet6Address) {
    return StandardProtocolFamily.INET6;
} else {
    throw new IllegalStateException("Unknown ProtocolFamily");