Addition of Two Number

import java.io.*;

public class Add 
{
   public static void main(String s[])
   {
      int a, b,sum=0;
      DataInputStream in=new DataInputStream(System.in);
      try
      {
         System.out.print("Enter First Number:");
         a=Integer.parseInt(in.readLine());
         System.out.print("Enter Second Number:");
         b=Integer.parseInt(in.readLine());
         sum=a+b;
         System.out.println("Sum is "+sum+".");
      }
      catch(Exception e)
      {}
   }
}

Output