import java.net.*;
import java.util.*;

public class InterfaceLister {

  public static void main(String[] args) throws SocketException {
    Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetwork
    Interfaces();
    while (interfaces.hasMoreElements()) {
      NetworkInterface ni = interfaces.nextElement();
      System.out.println(ni);               
    }  
  }
}