Write a program to input a number and Swap the first and last digit of this number?(2784===4782)

80)  Write a program to input a number and Swap the first and last digit of this number?(2784===4782)

import java.util.*;

public class Swap_first_last_digit

{

    public static void main(String args[ ])

   {

           Scanner sc = new Scanner (System.in);

           System.out.println("Enter a number");

           int a = sc.nextInt();

           int k = a;

           int c = 0;

           while(k>0)

           {

               k=k/10;

               c++;

           }

           int m = (int)Math.pow(10,c-1);

           int n = a%m;

           int t = a/m;

           int r = n%10;

           n=n/10;

           n=(n*10)+t;

           n=(r*m)+n;

           System.out.println("Number after SWAPING First and Last Digit = "+n);   

    }

}

Output : 

swaping-first-and-last-digit-of-a-number

       Write a program to input a number and check whether it is Adam Number or not?  (12² =144 , 21² = 441 = 144, 144=144)