Need to convert this completely to applet

package ip;

  import java.net.InetAddress;
  import java.net.NetworkInterface;
  import java.net.SocketException;
  import java.util.Enumeration;
  import javax.swing.JApplet;
  import javax.swing.JOptionPane;
  
  public class Addrs extends JApplet{
	  static String[] top=new String[20];
	  static double counter=0;
    public static void init(String[] args) throws SocketException {
      Enumeration ifaces = NetworkInterface.getNetworkInterfaces();
  
      while (ifaces.hasMoreElements()) {
        NetworkInterface ni = (NetworkInterface)ifaces.nextElement();  
        Enumeration addrs = ni.getInetAddresses();  
        while (addrs.hasMoreElements()) {
          InetAddress ia = (InetAddress)addrs.nextElement();
          top[top.length]=ni.getName()+": " + ia.getHostAddress();
          counter++;
        }
      }
      for (int x=0;x<counter;x++) {
    	  JOptionPane.showMessageDialog(null,top[x]);
    	  System.out.println(top[x]);
      }
    }
  }

package ip;

  import java.net.InetAddress;
  import java.net.NetworkInterface;
  import java.net.SocketException;
  import java.util.Enumeration;
  
  public class Addrs {
    public static void main(String[] args) throws SocketException {
      Enumeration ifaces = NetworkInterface.getNetworkInterfaces();
  
      while (ifaces.hasMoreElements()) {
        NetworkInterface ni = (NetworkInterface)ifaces.nextElement();
        System.out.println(ni.getName() + ":");
  
        Enumeration addrs = ni.getInetAddresses();
  
        while (addrs.hasMoreElements()) {
          InetAddress ia = (InetAddress)addrs.nextElement();
          System.out.println(" " + ia.getHostAddress());
        }
      }
    }
  }