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Editorial Team
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Asked: 2026-05-16T03:01:00+00:00

CLASSPATH has the /Users/smcho/Desktop/clojure as one of its path, and this directory has the

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CLASSPATH has the “/Users/smcho/Desktop/clojure” as one of its path, and this directory has the file hello.clj.

Running clojure, and running (require ‘hello) give this error message.

java.io.FileNotFoundException: Could not locate hello__init.class or hello.clj on classpath:  (NO_SOURCE_FILE:0)

When I change directory to “/Users/…/clojure”, and run the same (require ‘hello), there’s no problem. The . is on the CLASSPATH.

Running 

java -cp /Users/smcho/bin/jar/clojure.jar:/Users/smcho/Desktop/clojure clojure.lang.Repl

also works.

Why clojure can’t find the source on the CLASSPATH?

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1 Answer

  1. Editorial Team

    Like Alex mentioned, if you start java with the -cp argument, then the CLASSPATH environment is not referenced. So, instead of

    java -cp /Users/smcho/bin/jar/clojure.jar clojure.lang.Repl

    use

    java -cp /Users/smcho/bin/jar/clojure.jar:$CLASSPATH clojure.lang.Repl

    You can examine your java classpath from within the Clojure repl:

    (doseq [p (.getURLs (java.lang.ClassLoader/getSystemClassLoader))] (println (.getPath p)))
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