Problem Statement

Walk a given directory and print the names of files matching a given pattern.
(How is "pattern" defined? substring match? DOS pattern? BASH pattern? ZSH pattern? Perl regular expression?)

Note: This task is for non-recursive methods.   These tasks should read a single directory, not an entire directory tree.
Note: Please be careful when running any code presented here.

Let's start with the solution:

(import java.nio.file.FileSystems)

(defn match-files [f pattern]
  (.matches (.getPathMatcher (FileSystems/getDefault) (str "glob:*" pattern)) (.toPath f)))

(defn walk-directory [dir pattern]
  (let [directory (clojure.java.io/file dir)]
    (map #(.getPath %) (filter #(match-files % pattern) (.listFiles directory)))))