PROGRAM : ARMSTRONG NUMBER Armstrong Number in Java . Armstrong Number in Java : Armstrong number is a number that is equal to the sum of cubes of its digits for example 0, 1, 153, 370, 371, 407 etc. SYNTAX : import java.io.*; class armstrong { public static void main(String args[])throws IOException { BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); int n;int n1; System.out.println("Enter a Number"); n=Integer.parseInt(br.readLine()); n1=n;int d=0,sum=0; while(n!=0) { d=n%10; sum+=Math.pow(d,3); n=n/10; } if(su...