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Using NetworkInterface

import java.net.InterfaceAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.util.Enumeration; import java.util.Iterator; import java.util.List; public class NetworkParameterDemo {   public static void main(String[] args) throws Exception {     Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();     while (en.hasMoreElements()) {       NetworkInterface ni = en.nextElement();       printParameter(ni);     }   }   public static void printParameter(NetworkInterface ni) throws SocketException {     System.out.println(" Name = " + ni.getName());     System.out.println(" Display Name = " + ni.getDisplayName());     System.out.println(" Is up = " + ni.isUp());     System.out.println(" Support multicast = " + ni.supportsMulticast());     System.out.println(" Is loopback = " + ni.isLoopback());     System.out.println(" Is virtual = " + ni.isVirtual());     System.out.println(" Is point to point = " + ni.isPointToPoint());     System.out.println(" Hardware address = " + ni.getHardwareAddress());     System.out.println(" MTU = " + ni.getMTU());     System.out.println("\nList of Interface Addresses:");     List<InterfaceAddress> list = ni.getInterfaceAddresses();     Iterator<InterfaceAddress> it = list.iterator();     while (it.hasNext()) {       InterfaceAddress ia = it.next();       System.out.println(" Address = " + ia.getAddress());       System.out.println(" Broadcast = " + ia.getBroadcast());       System.out.println(" Network prefix length = " + ia.getNetworkPrefixLength());       System.out.println("");     }   } }