Re: How to call Clojure from Java?

2017-06-24 Thread thelmuth
Thanks for the suggestions! Daniel's code helped me a lot, thanks!

One thing that had me stuck for a while is that you have to have a Clojure 
jar in your classpath. I also worked through a different way, using an 
uberjar of a Clojure project. I posted my guides here 
<https://push-language.hampshire.edu/t/calling-clojure-code-from-java/865?u=thelmuth>
 
for anyone else trying to do this.

On Thursday, June 1, 2017 at 10:11:25 PM UTC-4, Daniel Compton wrote:
>
> Hi thelmuth
>
> Here's a fully worked example. It calls the Clojure function 
> myco.dashed-namespace.app.core/start!. Save it to 
> src/myco/dashed_namespace/app/Main.java.
>
> package myco.dashed_namespace.app;
>
> import clojure.java.api.Clojure;
> import clojure.lang.IFn;
>
> public class Main {
> public static void main(String[] args) {
> try {
> IFn require = Clojure.var("clojure.core", "require");
> require.invoke(Clojure.read("myco.dashed-namespace.app.core"));
>
> Clojure.var("myco.dashed-namespace.app.core", "start!").invoke();
> }
> catch (Throwable e) {
> System.out.println(e.getMessage());
> }
> }
> }
>
>
> On Fri, Jun 2, 2017 at 1:24 PM James Reeves <ja...@booleanknot.com 
> > wrote:
>
>> There's a brief section on this on the Clojure website:
>>
>> https://clojure.org/reference/java_interop#_calling_clojure_from_java
>>
>> On 2 June 2017 at 01:35, thelmuth <trh...@gmail.com > wrote:
>>
>>> What is the best way to call a Clojure function from Java?
>>>
>>> Most of the resources I have found are either very old or don't go into 
>>> enough detail. I am a Clojure programmer with very little Java background, 
>>> and have been having trouble with the methods I've found, especially 
>>> classpath issues.
>>>
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>>
>>
>>
>> -- 
>> James Reeves
>> booleanknot.com
>>
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>

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How to call Clojure from Java?

2017-06-01 Thread thelmuth
What is the best way to call a Clojure function from Java?

Most of the resources I have found are either very old or don't go into 
enough detail. I am a Clojure programmer with very little Java background, 
and have been having trouble with the methods I've found, especially 
classpath issues.

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first post.
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