JavaFX + Clojure + leiningen

javafx.clj

(ns kuchitama.javafx
  (:gen-class
    :extends javafx.application.Application)
  (:import [javafx.application Application]
           [javafx.scene Scene Group]
           [javafx.stage Stage StageBuilder]))

(defn -start [this stage]
  (let [scene (Scene. (Group.))
        builder (doto (StageBuilder/create)
      (.title "test")
      (.scene scene)
      (.x 100)
      (.y 100)
      (.width 300)
      (.height 200)
      )]
      (.show (.build builder))))

(defn -main [& args]
  (Application/launch kuchitama.javafx args))

project.clj

(defproject javafx "0.1.0-SNAPSHOT"
  :description "Sample Program of JavaFX with Clojure"
  :dependencies [[org.clojure/clojure "1.4.0"]]
  :resource-paths ["lib/jfxrt.jar"]
  :main kuchitama.javafx
  )

Include the Gluon JavaFX maven artifacts and then use as usual.

Something like:

                 [org.openjfx/javafx-base "11.0.2"]
                 [org.openjfx/javafx-controls "11.0.2"]
                 [org.openjfx/javafx-graphics "11.0.2"]
                 [org.openjfx/javafx-swing "11.0.2"]

Note, the *Builder classes have been removed (a long time ago). This bit me as I had an old project that depended on them and could not find them.

There are Gluon JavaFX maven artifacts for JDK 17 as well. I use JDK 11 for a legacy application because JDK 11 will still be supported for another year and a half or so. Same with the Gluon JavaFX jars.