Thread: Help with while loop

I am trying to write a program that takes an int as input. Then it prints out the number with spaces and the sum. Example:

input: 123
output: 1 2 3 The sum is: 6


here is the output I am getting: 1 The sum is: 6

here is my code

import java.util.*;
 
public class ch5PrEx1
{
	static Scanner console = new Scanner(System.in);
 
	public static void main(String[] args)
	{
	  String input;
	  int sum = 0, numericInput, length;
 
	  System.out.println("Please enter an integer: ");
	  System.out.println();
 
	  input = console.next();
	  numericInput = Integer.parseInt(input);
	  numericInput = Math.abs(numericInput);
	  input = Integer.toString(numericInput);
 
	  length = input.length();
 
 
	  System.out.println(input.charAt(length-length) + " " + Addition(length, input) + " " + "The sum is: " + Sum(sum, length, numericInput));
 
 
 
	}
 
	public static int Sum(int sum, int length, int numericInput)
	{
		int counter = 0;
		while(counter < length)
		{
 
			sum += numericInput % 10;
			numericInput /= 10;
			counter = counter + 1;
		}
 
		return sum;	
	}
 
	public static String Addition(int length, String input)
	{
		String output = " ", index; 
		int add = 0, counter = 0;
 
 
 
		while(counter < length)
		{
			index = input.substring(add + 1, add + 1);
			output = String.format("%s", index);
			add = add + 1;
			counter++;
 
 
		}
 
		return output;
 
 
 
	}
 
}

Thanks in advance!

I do have a method to do that Addition(). I want it to print the index at 0 first then print the rest of the indexes. Which the Addition methods does, except it only returns the last value.

Addition() (that's a bad name for a Java method - follow the convention in the API - you should be using a lowerCaseFirstLetter()) uses String.subtring(int, int) where both ints are the same. Read the API doc for that method - particularly the bit around

Thus the length of the substring