Armstrong Number in Java: A positive number is called armstrong number if it is equal to the sum of cubes of its digits for example 0, 1, 153, 370, 371, 407 etc.
import java.util.*;
class armstrong
{//class armstrong opens
public static void main(String[]args)
{//main method opens
Scanner sc=new Scanner(System.in);
System.out.println("Enter a no");
int n=sc.nextInt();//variable n to accept the no
int k=n,r=0,s=0;//variable k to store the no,varible r to extract the digits,variable s to store the sum
while(n>0)
{
r=n%10;
s=s+(r*r*r);
n=n/10;
}
if(k==s)
System.out.println(k+" is an armstrong no");
else
System.out.println(k+" is not an armstrong no");
}//method closes
}//class closes
