Adding Armstrong.java file

Language/Java/Armstrong.java

@@ -0,0 +1,29 @@
+//Program to check whether a number is an armstrong number or not. 
+//A positive integer is called an Armstrong number of order n if the sum of cubes of each digits is equal to the number itself.
+
+import java.util.Scanner;
+
+public class Armstrong {
+
+    public static void main(String[] args) 
+	{
+		System.out.println("Enter any number: ");
+        Scanner sc = new Scanner(System.in);
+		int n = sc.nextInt();
+		int m, rem, res = 0;
+
+        m = n;
+
+        while(m!= 0)
+        {
+            rem = m % 10;
+            res+= Math.pow(rem, 3);
+            m /= 10;
+        }
+
+        if(res == n)
+            System.out.println(n + " is an Armstrong number.");
+        else
+            System.out.println(n + " is not an Armstrong number.");
+    }
+}