(System/getProperty "user.dir")
=> "c:\\clojure"

(System/getProperty "user.home")
=> "c:\\Users\\Admin"

(map #(File. %)
       (.split (System/getProperty "java.class.path")
               (System/getProperty "path.separator"))))
=>(#<File .> #<File clojure-1.5.0.jar> #<File clojure-contrib.jar>)