IP 2 Hex

import java.io.*;
import java.net.*;
class cli
{
   public static void main(String ar[])
   {
    try
    {
      Socket s=new Socket("localhost",7212);
      DataInputStream in=new DataInputStream(System.in);
      PrintStream p=new PrintStream(s.getOutputStream());
      String str;
      System.out.println("Enter IP Adress");
      str=in.readLine();
      p.println(str);
    }
    catch(Exception e)
    {
     System.out.println(e);
    }
  }
}



import java.io.*;
import java.net.*;
import java.util.*;
class ser
{
   public static void main(String ar[])
   {
    try
    {
      ServerSocket ss=new ServerSocket(7212);
      Socket s=ss.accept();
      DataInputStream din=new DataInputStream(s.getInputStream());
      String str,str1="",str2="",str3="",str4="",hex;
      int i,j,k,l;
      str=din.readLine();
      System.out.println(str);
      StringTokenizer st=new StringTokenizer(str,".");
      if(st.countTokens()==4)
      {
        while(st.hasMoreTokens())
        {
         str1=st.nextToken();
         str2=st.nextToken();
         str3=st.nextToken();
         str4=st.nextToken();
        }
       i=Integer.parseInt(str1);
       j=Integer.parseInt(str2);
       k=Integer.parseInt(str3);
       l=Integer.parseInt(str4);
       str1=Integer.toHexString(i);
       str2=Integer.toHexString(j);
       str3=Integer.toHexString(k);
       str4=Integer.toHexString(l);
       hex=str1+"."+str2+"."+str3+"."+str4;
       System.out.println("Equivalent Hexadecimal IP Address");
       System.out.println(hex);
       }
       else
       System.out.println("Invalid IP Addresss");
    }
    catch(Exception e)
    {
      System.out.println(e);
    }
  }
}