Write a method that computes the sum of the digits in an integer. Use the following method header: public static int sumDigits(long n) (For example, sumDigits(234) returns 9 (2 + 3 + 4). Hint: Use the % operator to extract digits, and the l operator to remove the extracted di Write a test program that prompts the user to enter an integer and displays the sum of all its digits. The outline of the program is as follo public class Test f public static void main(Stringl args) // Fill in the code here public static int sumDigits(long n)f // Fill in the code here