Java sort String array of file names by their extension

Question

I have an array of filenames and need to sort that array by the extensions of the filename. Is there an easy way to do this?

Answer 1

Create a Comparator and compare the string extensions. Take a look at the following

http://java.sun.com/j2se/1.4.2/docs/api/java/util/Comparator.html

Then pass in your List of strings to Arrays.sort(List, Comparator)