Java program beginning and please use while loop not use for loop

Write a method, printFactors, which takes one positive integer n (>> 2) and prints all factors of n that are greater than or equal to 2 including itself. You may assume that the parameter, n, is guaranteed to be greater than or equal to 2.

 E.g., printFactors(10) prints 2 5 10. printFactors(19) prints 19. printFactors(30) prints 2 3 5 6 10 15 30. 

Write a method, sumEvenDigits, which takes one postive integer parameter, n, and returns the sum of all even digits in n.

 E.g., sumEvenDigits(1032) returns 2 (0 + 2). sumEvenDigits(240) returns 6 (2 + 4 + 0). sumEvenDigits(123456) returns 12 (2 + 4 + 6).