Java Utililty Methods Network Interface Get

List of utility methods to do Network Interface Get

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Description

The list of methods to do Network Interface Get are organized into topic(s).

Method

CollectiongetNetworkInterfaces()
Utility method for accessing public interfaces. 
final Collection<InetAddress> addresses = new ArrayList<InetAddress>();
final Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
while (e.hasMoreElements()) {
    final NetworkInterface ni = e.nextElement();
    final Enumeration<InetAddress> niAddresses = ni.getInetAddresses();
    while (niAddresses.hasMoreElements()) {
        addresses.add(niAddresses.nextElement());
return addresses;
ListgetNetworkInterfaces()
get Network Interfaces 
List<NetworkInterface> lst = new ArrayList<NetworkInterface>();
Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
while (e.hasMoreElements())
    lst.add(e.nextElement());
return lst;
CollectiongetNetworkInterfaces()
get Network Interfaces 
Collection<String> itfs = getNetworkInterfaces(true);
return itfs;
ListgetNetworkInterfaces()
get Network Interfaces 
List<NetworkInterface> networkInterfaces = new ArrayList<>();
Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
while (interfaces.hasMoreElements()) {
    NetworkInterface networkInterface = interfaces.nextElement();
    networkInterfaces.add(networkInterface);
    Enumeration<NetworkInterface> subInterfaces = networkInterface.getSubInterfaces();
    if (subInterfaces.hasMoreElements()) {
        while (subInterfaces.hasMoreElements()) {
...
MethodgetNIOMulticastMethod()
get NIO Multicast Method 
Method method = null;
try {
} catch (Throwable t) {
    method = null;
return method;
InetAddress[]getNonLoopbackLocalAdresses()
Returns list of machine assigned IP addresses excluding localhost/127.0.0.1 
List<InetAddress> addrs = new ArrayList<InetAddress>();
for (InetAddress inetAddr : getLocalAddresses()) {
    if (!inetAddr.isLoopbackAddress()) {
        if (isPublic(inetAddr)) {
            addrs.add(0, inetAddr);
        } else {
            addrs.add(inetAddr);
return addrs.toArray(new InetAddress[addrs.size()]);
NetworkInterfacegetNonLoopbackNetworkInterface()
get Non Loopback Network Interface 
Enumeration<NetworkInterface> b = NetworkInterface.getNetworkInterfaces();
while (b.hasMoreElements()) {
    NetworkInterface networkInterface = b.nextElement();
    Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
    while (inetAddresses.hasMoreElements()) {
        InetAddress address = inetAddresses.nextElement();
        if (!address.isLoopbackAddress())
            return networkInterface;
...
NetworkInterfacegetPublicInterface()
get Public Interface 
Enumeration<NetworkInterface> nets;
try {
    nets = NetworkInterface.getNetworkInterfaces();
} catch (SocketException e) {
    return null;
NetworkInterface netinf;
while (nets.hasMoreElements()) {
...
ListgetUsualNetworkInterfaces()
get Usual Network Interfaces 
List<NetworkInterface> resultList = new ArrayList<NetworkInterface>();
Enumeration<NetworkInterface> allNetInterfaces;
try {
    allNetInterfaces = NetworkInterface.getNetworkInterfaces();
    while (allNetInterfaces.hasMoreElements()) {
        NetworkInterface netInterface = (NetworkInterface) allNetInterfaces.nextElement();
        if (netInterface.isLoopback() || netInterface.isVirtual() || !netInterface.isUp()) {
            continue;
...
booleanisActive(String niName)
This method invoke the isUp for currently associated NetworkInterface 
NetworkInterface ni = toNI(niName);
if (ni != null) {
    return ni.isUp();
return false;