Question

Hello I have a main method in a Java class and I would like to access and run my clojure functions from my java classes, is that possible right?

Help please

Answer 1

If you just want to call a function which you have defined in a Clojure script the following code might help you getting the job done:

test.clj:

(ns test)
(defn hello [name]
  (println (str "Hi " name "!")))

TestRun.java:

import clojure.lang.RT;
public class TestRun {
    public static void main(String[] args) throws Exception {
        RT.loadResourceScript("test.clj");
        // var(namespace, function name).invoke(parameters..)
        RT.var("test", "hello").invoke("Daisy Duck");
    }
}

Output:

Hi Daisy Duck!

Make sure you have the Clojure jar on your classpath