If you want to be able to use Clojure code from other JVM languages, in Clojure, there are a couple of ways in which you can do it:
You can generate new Java classes and use them as you normally would; it can implement some interface or extend from some other class
You can generate a proxy on the fly, this way you can implement a contract (in the form of a class or an interface) that some framework requires with little code and effort
You can use the
clojure.java.api
package to call Clojure functions directly from Java
Note
You can find more information on how this works at the following location: http://www.falkoriemenschneider.de/a__2014-03-22__Add-Awesomeness-to-your-Legacy-Java.html.
Let's have a look at how we can define a Java class.
Create a new namespace called thumbnails.image-java
and write the following code:
(ns thumbnails.image-java (:require [thumbnails.image :as img]) (:gen-class :methods [[loadImage [java.io.InputStream] java.awt.image.BufferedImage...