Hi!

Would you like to get the 1. input, 2. do the calculation, 3. print
something out, and then begin with 1.?
For this i modified your code a bit:

package javaapplication1;

import java.io.*;
/**
 *
 * @author Administrator
 */
public class Main{
    int number, sum, temp;
    BufferedReader in;
    String s1;

    /** Creates a new instance of Main */

    public Main() {
        int number = 0, sum = 0, temp = 0;
    in = new BufferedReader( new InputStreamReader(System.in) );
    s1 = null;
    }

    /**
     * @param args the command line arguments
     */

    public void commandLine(){
        //BufferedReader in = new BufferedReader(  //define it as a
global variable, so we don't need
                //new InputStreamReader(System.in)); //to initialize it
each time, commandLine() is called.
        //String s1 = null;
        int integer = 0;
        try
        {
            System.out.print("Enter any positive integer : ");
            s1 = in.readLine();
            integer = Integer.parseInt(s1);
        }
        catch(IOException ioex)
        {
            System.out.println("Input error");
            System.exit(1);
        }
        catch(NumberFormatException nfex)
        {
            System.out.println("\"" + nfex.getMessage() +
                "\" is not numeric");
            System.exit(9);
        }

        System.out.println("Thanks for the number, " + s1);
        Sum(integer, temp, sum);
    }

    public void Sum(int number, int temp, int sum){
        do{
            temp = number % 10;
            sum = sum + temp;
            number = number / 10;
        }
        while(number > 0);
        System.out.print("Those digits added = " + sum);
        //System.exit(1);  //if you call this, the program will quit
after the first Sum()
    }

    public static void main(String[] args) {
        Main test;
        test = new Main();
        while(true) { //calling commandLine() in an endless loop. With
CTRL+C you can terminate the program!
        test.commandLine();
    }

    }

}

kauloha@comcast.net schrieb: