Write a Program that dempnstrate program structure of Java

import java.io.*;

public class add1

{

public static void main(String[] s)

{

                                int a,add,b;

                                add=0;

                                String s1,s2;

                                try

                                {

                                DataInputStream d=new DataInputStream(System.in);

                                System.out.println("enter value a & b:");

                                s1=d.readLine();

                                s2=d.readLine();

                                a=Integer.parseInt(s1);

                                b=Integer.parseInt(s2);

                                add=a+b;

                                System.out.println("addition of "+a+" and "+b+"="+add);

                                }

                                catch(Exception e)

                                {

                                                System.out.println("Exception is "+e);

                                }

                                }

}

//output

enter value a & b:

10

12

addition of 10 and 12=22

Press any key to continue . .