java - How do I set up classes in a Lein project? -

i ran lein new app hm, in hm/src/hm edited core.clj be:

(ns hm.core   (:gen-class)   (:use [hm.hashmap]))  (defn -main []   (def j (new hm.hashmap))   (-add j "foo" "bar")   (println j)) 

and hashmap.clj be:

(ns hm.hashmap   (:gen-class    :methods [[hashmap [] java.util.hashmap]              [add [string string]]]))  (defn -hashmap []   (def h (new java.util.hashmap))   h)  (defn -add [this key value]   (. put key value)   this) 

the goal make wrapper around hashmap can understand clojure , how ties java. i'm new clojure. however, when compile this, lot of classnotfoundexception in hashmap.clj. how can make work?

note: direct answer question. don't recommend learn clojure way.

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you need compile classes before can run them. in project.clj add map:

:aot [hm.hashmap] 

then need run lein compile in order compile classes. should see output saying hm.hashmap class compiled. after run lein run invoke "main "function in hm.core.

i removed :methods part of gen-class because you're defining them below, , causing weird java.lang., error. you're going run other errors, should enough passed issue.