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Finds a local, non-loopback, IPv4 address

import java.net.Inet4Address; import java.net.InetAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.util.Enumeration; public class Util{   /**    * Finds a local, non-loopback, IPv4 address    *     * @return The first non-loopback IPv4 address found, or    *         <code>null</code> if no such addresses found    * @throws SocketException    *            If there was a problem querying the network    *            interfaces    */   public static InetAddress getLocalAddress() throws SocketException   {     Enumeration<NetworkInterface> ifaces = NetworkInterface.getNetworkInterfaces();     while( ifaces.hasMoreElements() )     {       NetworkInterface iface = ifaces.nextElement();       Enumeration<InetAddress> addresses = iface.getInetAddresses();       while( addresses.hasMoreElements() )       {         InetAddress addr = addresses.nextElement();         if( addr instanceof Inet4Address && !addr.isLoopbackAddress() )         {           return addr;         }       }     }     return null;   } }