get Local IP Addresses - Java Network

Java examples for Network:IP Address

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Description

get Local IP Addresses

Demo Code


import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import org.apache.log4j.Logger;

public class Main{
    public static void main(String[] argv) throws Exception{
        System.out.println(getLocalAddresses());
    }// w  ww.j  ava2s . c om
    private static final Logger LOGGER = Logger
            .getLogger(HostAddressUtil.class);
    public static List<String> getLocalAddresses() {
        List<String> list = new ArrayList<String>();
        Enumeration<NetworkInterface> interfaceList = null;
        try {
            interfaceList = NetworkInterface.getNetworkInterfaces();
        } catch (SocketException ex) {
            LOGGER.error("Error when getting local network interfaces", ex);
        }
        if (interfaceList != null) {
            while (interfaceList.hasMoreElements()) {
                NetworkInterface face = (NetworkInterface) interfaceList
                        .nextElement();
                Enumeration<InetAddress> addressList = face
                        .getInetAddresses();
                if (addressList == null) {
                    continue;
                }
                while (addressList.hasMoreElements()) {
                    InetAddress address = (InetAddress) addressList
                            .nextElement();
                    list.add(address.getHostAddress());
                }
            }
        }
        return list;
    }
}

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