Please, answer the question 2

Test 2(12+6 points). Methods and Projects Write a method(12 points) 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) Write a test program(6 points) that prompts the user to enter an integer and displays the sum of all its digits