Question

I have a java file with a single class and I want to include it in my lein project. Where do I put it and how do I import it? (I tried putting it in the src directory under the package path but it tells me ClassNotFound)

So the java file has this package declaration:

package com.thebuzzmedia.imgscalr;

and has this class:

public class Scalr {

I put it in ~/src/com/thebuzzmedia/imgscalr/Scalr.java
and tried to import it from the repl thusly:

(import '(com.thebuzzmedia.imgscalr Scalr))

And I get this:

com.thebuzzmedia.imgscalr.Scalr
[Thrown class java.lang.ClassNotFoundException]

What am I missing?

Answer 1

Where to place Java sources really depends on which build system you’re using. If you’re using Leiningen, you have to configure the source paths:

(defproject my-project "0.0.1-SNAPSHOT"
  [...]
  :java-source-paths ["src/java" "test/java"])

Then you can import Java classes at those source locations in your code or at the REPL like you were already trying to do.