Check armstrong number or not

1. package com.instanceofjavaTutorial; 
2. import java.util.Scanner;
3. 
   
4. public class ArmstrongNumber{
5.  
6. public static void main(String args[])
7.  {
8.  
9.           int n, sum = 0, temp, r;
10.  
11.           Scanner in = new Scanner(System.in);
12.  
13.           System.out.println("Enter a number to check if it is an Armstrong number or not");     
14.           n = in.nextInt();
15.  
16.           temp = n;
17.           while( temp != 0 )
18.           {
19.  
20.              r = temp%10;
21.              sum = sum + r*r*r;
22.              temp = temp/10; 
23.  
24.           }
25.  
26.           if ( n == sum )
27.              System.out.println(n+"is an Armstrong number.");
28.           else
29.              System.out.println(n+"  is not an Armstrong number.");  
30.        
31.        }
32. }

Output:

1. Enter a number to check if it is an Armstrong number or not
2. 153
3. 153is an Armstrong number.