NetWork interface Reader

import java.io.*;

import java.net.*;

import java.util.*;

import static java.lang.System.out;

public class Main  {

  public  void  call()

  {

  }

    public static void main(String[] args) throws IOException  {

        

             Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();

             int i=0;

        for (NetworkInterface netint : Collections.list(nets))

        {out.print("---------------------"+i+++"\n");

            displayInterfaceInformation(netint);

        }

    }

     static void displayInterfaceInformation(NetworkInterface netint) throws SocketException {

       out.printf("Display name: %s\n", netint.getDisplayName());

        out.printf("Name: %s\n", netint.getName());

        Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();

        for (InetAddress inetAddress : Collections.list(inetAddresses)) {

            out.printf("InetAddress: %s\n", inetAddress);

        }

        out.printf("Up? %s\n", netint.isUp());

        out.printf("Loopback? %s\n", netint.isLoopback());

        out.printf("PointToPoint? %s\n", netint.isPointToPoint());

        out.printf("Supports multicast? %s\n", netint.supportsMulticast());

        out.printf("Virtual? %s\n", netint.isVirtual());

        out.printf("Hardware address: %s\n",

                    Arrays.toString(netint.getHardwareAddress()));

        out.printf("MTU: %s\n", netint.getMTU());

        out.printf("\n");

     }

}

JSF application with file extension .JSF

<context-param>

<param-name>javax.faces.DEFAULT_SUFFIX</param-name>

<param-value>.jsf</param-value>

</context-param>

in web.xmlin web.xml

Port Scanner in Java

public static void main(String[] args)  {

        URLConnection conn;

       for(int port=1;port<65535;port++)

       {

            try {

                ServerSocket serv = new ServerSocket(port);

                if(serv.isBound())

                    {

                    serv.close();

                    }

            } catch (IOException ex) {

                System.out.println(port);

            }

       }

    }