Summation of a given set of Numbers using java (calculate given sum of digits in java)

Hi All,

 Summation of a set of Numbers, It used to calculate the sum of digits of given numbers :)


import java.io.*;

public class Summation {

    public static void main(String arg[]) {
        try {
            BufferedReader din = new BufferedReader(new InputStreamReader(System.in));
            int num, rem, sum;
            System.out.println(" Summation of a set of Numbers ");
           
            System.out.println("Please enter the number the sum of a digit: ");
            num = Integer.parseInt(din.readLine());
            rem = 0;
            sum = 0;

            while (num > 0) {
                rem = num % 10;  //getting remainder value stored in rem variable
                sum = sum + rem; // adding rem values to sum
                num = num / 10; // divide the number by 10 get remove the remainder value
            }

            System.out.println("The total Summation of the digit is : " + sum);
        } catch (IOException e) {
            System.out.println("Wrong Input");
        }
    }
}

output:

 Summation of a set of Numbers
Please enter the number the sum of a digit:
12121
The total Summation of the digit is :7