How To Create Armstrongnumber In Using Java

import java.util.*;
class ArmstrongNumber
{
 public static void main(String args[])
{
int n,sum=0,temt,r;
Scanner in =new Scanner(System.in);
System.out.println("Enter a number to check if it is an armstrong number");
n=in.nextInt();
temp=n;
while(temp !=0)
{
r=temp;
sum =sum+r*r*r;
temp = temp/10;
}
if(n==sum)
System.out.println("Entered number is an armstrong number.");
else
System.out.println("Entered number is not an armstrong number.");
  }
}