Java IP Address Get getLocalIpAddresses()

Description

Returns a list of local InetAddresses for this machine

License

Open Source License

Exception

Parameter	Description
RuntimeException	If there is an error retrieving the InetAddresses

Return

List[InetAddress] The list of IP addresses

Declaration

public static List<InetAddress> getLocalIpAddresses() throws RuntimeException 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;

import java.util.Enumeration;
import java.util.List;
import java.util.Vector;

public class Main {
    /**/*w  ww  . j a  v a2s  . c o m*/
     * Returns a list of local InetAddresses for this machine
     *
     * @return List[InetAddress] The list of IP addresses
     *
     * @throws RuntimeException
     *       If there is an error retrieving the InetAddresses
     * @since 1.2
     */
    public static List<InetAddress> getLocalIpAddresses() throws RuntimeException {
        return getLocalIpAddresses(false, false);
    }

    /**
     * Returns a list of local InetAddresses for this machine
     *
     * @param pruneSiteLocal
     *       boolean Set to true if site local (10/8, for example) addresses should be pruned
     *
     * @return List[InetAddress] The list of addresses
     *
     * @throws RuntimeException
     *       If there is an error retrieving the InetAddresses
     * @since IpHelper.java 1.2
     */
    public static List<InetAddress> getLocalIpAddresses(boolean pruneSiteLocal) throws RuntimeException {
        return getLocalIpAddresses(pruneSiteLocal, false);
    }

    /**
     * Returns a list of local InetAddresses for this machine
     *
     * @param pruneSiteLocal
     *       boolean Set to true if site local (10/8, for example) addresses should be pruned
     * @param pruneDown
     *       boolean Set to true to prune out interfaces whose .isUp() return false
     *
     * @return List[InetAddress] The list of addresses
     *
     * @throws RuntimeException
     *       If there is an error retrieving the InetAddresses
     * @since IpHelper.java 2007-11-22
     */
    public static List<InetAddress> getLocalIpAddresses(boolean pruneSiteLocal, boolean pruneDown)
            throws RuntimeException {
        try {
            Enumeration<NetworkInterface> nics = NetworkInterface.getNetworkInterfaces();
            List<InetAddress> addresses = new Vector<InetAddress>();

            while (nics.hasMoreElements()) {
                NetworkInterface iface = nics.nextElement();
                Enumeration<InetAddress> addrs = iface.getInetAddresses();

                if (!pruneDown || iface.isUp()) {
                    while (addrs.hasMoreElements()) {
                        InetAddress addr = addrs.nextElement();

                        if (!addr.isLoopbackAddress() && !addr.isLinkLocalAddress()) {
                            if (!pruneSiteLocal || (pruneSiteLocal && !addr.isSiteLocalAddress())) {
                                addresses.add(addr);
                            }
                        }
                    }
                }
            }

            return addresses;
        } catch (SocketException e) {
            throw new RuntimeException(e.getMessage(), e);
        }
    }

    public static List<InetAddress> getLocalIpAddresses(String ifaceName, boolean pruneSiteLocal)
            throws RuntimeException {
        try {
            NetworkInterface iface = NetworkInterface.getByName(ifaceName);

            List<InetAddress> addresses = new Vector<InetAddress>();
            Enumeration<InetAddress> addrs = iface.getInetAddresses();

            while (addrs.hasMoreElements()) {
                InetAddress addr = addrs.nextElement();

                if (!addr.isLoopbackAddress() || (pruneSiteLocal && !addr.isLinkLocalAddress())) {
                    addresses.add(addr);
                }
            }

            return addresses;
        } catch (SocketException e) {
            throw new RuntimeException(e.getMessage(), e);
        }
    }
}

Related

1. getLocalIPAddress()
2. getLocalIPAddress()
3. getLocalIpAddress()
4. getLocalIpAddress()
5. getLocalIPAddresses()
6. getLocalIPAddresses()
7. getLocalIpByInterfaceName(String interfaceName)
8. getLocalIPByNetworkInterface()
9. getLocalIPCollection()