85. CAESER CIPHER IN JAVA

import java.io.*;
class Crypto
{
static int i,k,j,m,n;
static String pt="",ct="";
public static void main(String arg[])throws IOException
{
j=Integer.parseInt(arg[0]);
InputStreamReader isr= new InputStreamReader(System.in);
BufferedReader br=new BufferedReader(isr);