Clojure and static class initialization

javafx.clj

(ns javafx
  (:import (javafx.scene.control Cell)))

(defn f
  []
  Cell)

javafx.clj.bytecode

Classfile /Users/ragnardahlen/projects/github/ragnard/clojure-javafx-java9/classes/javafx$f.class
  Last modified Oct 10, 2017; size 666 bytes
  MD5 checksum 2c4c877443f9b9ceec32fae5c3481caa
  Compiled from "javafx.clj"
public final class javafx$f extends clojure.lang.AFunction
  minor version: 0
  major version: 49
  flags: ACC_PUBLIC, ACC_FINAL, ACC_SUPER
Constant pool:
   #1 = Utf8               javafx$f
   #2 = Class              #1             // javafx$f
   #3 = Utf8               clojure/lang/AFunction
   #4 = Class              #3             // clojure/lang/AFunction
   #5 = Utf8               javafx.clj
   #6 = Utf8               <init>
   #7 = Utf8               ()V
   #8 = NameAndType        #6:#7          // "<init>":()V
   #9 = Methodref          #4.#8          // clojure/lang/AFunction."<init>":()V
  #10 = Utf8               invokeStatic
  #11 = Utf8               ()Ljava/lang/Object;
  #12 = Utf8               const__0
  #13 = Utf8               Ljava/lang/Object;
  #14 = NameAndType        #12:#13        // const__0:Ljava/lang/Object;
  #15 = Fieldref           #2.#14         // javafx$f.const__0:Ljava/lang/Object;
  #16 = Utf8               invoke
  #17 = NameAndType        #10:#11        // invokeStatic:()Ljava/lang/Object;
  #18 = Methodref          #2.#17         // javafx$f.invokeStatic:()Ljava/lang/Object;
  #19 = Utf8               <clinit>
  #20 = Utf8               javafx.scene.control.Cell
  #21 = String             #20            // javafx.scene.control.Cell
  #22 = Utf8               clojure/lang/RT
  #23 = Class              #22            // clojure/lang/RT
  #24 = Utf8               classForName
  #25 = Utf8               (Ljava/lang/String;)Ljava/lang/Class;
  #26 = NameAndType        #24:#25        // classForName:(Ljava/lang/String;)Ljava/lang/Class;
  #27 = Methodref          #23.#26        // clojure/lang/RT.classForName:(Ljava/lang/String;)Ljava/lang/Class;
  #28 = Utf8               Code
  #29 = Utf8               LineNumberTable
  #30 = Utf8               SourceFile
  #31 = Utf8               SourceDebugExtension
{
  public static final java.lang.Object const__0;
    descriptor: Ljava/lang/Object;
    flags: ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public javafx$f();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #9                  // Method clojure/lang/AFunction."<init>":()V
         4: return
      LineNumberTable:
        line 4: 0

  public static java.lang.Object invokeStatic();
    descriptor: ()Ljava/lang/Object;
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: getstatic     #15                 // Field const__0:Ljava/lang/Object;
         3: areturn
      LineNumberTable:
        line 4: 0

  public java.lang.Object invoke();
    descriptor: ()Ljava/lang/Object;
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: invokestatic  #18                 // Method invokeStatic:()Ljava/lang/Object;
         3: areturn
      LineNumberTable:
        line 4: 0

  public static {};
    descriptor: ()V
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: ldc           #21                 // String javafx.scene.control.Cell
         2: invokestatic  #27                 // Method clojure/lang/RT.classForName:(Ljava/lang/String;)Ljava/lang/Class;
         5: putstatic     #15                 // Field const__0:Ljava/lang/Object;
         8: return
      LineNumberTable:
        line 4: 0
}
SourceFile: "javafx.clj"
SourceDebugExtension:
  SMAP
  javafx.java
  Clojure
  *S Clojure
  *F
  + 1 javafx.clj
  javafx.clj
  *L
  2#1,5:2
  *E

javafx.clj.error.edn

#error {
 :cause "Toolkit not initialized"
 :via
 [{:type clojure.lang.Compiler$CompilerException
   :message "java.lang.ExceptionInInitializerError, compiling:(javafx.clj:4:1)"
   :at [clojure.lang.Compiler$DefExpr eval "Compiler.java" 470]}
  {:type java.lang.ExceptionInInitializerError
   :message nil
   :at [java.lang.Class forName0 "Class.java" -2]}
  {:type java.lang.IllegalStateException
   :message "Toolkit not initialized"
   :at [com.sun.javafx.application.PlatformImpl runLater "PlatformImpl.java" 273]}]
 :trace
 [[com.sun.javafx.application.PlatformImpl runLater "PlatformImpl.java" 273]
  [com.sun.javafx.application.PlatformImpl runLater "PlatformImpl.java" 268]
  [com.sun.javafx.application.PlatformImpl setPlatformUserAgentStylesheet "PlatformImpl.java" 550]
  [com.sun.javafx.application.PlatformImpl setDefaultPlatformUserAgentStylesheet "PlatformImpl.java" 512]
  [javafx.scene.control.Control <clinit> "Control.java" 87]
  [java.lang.Class forName0 "Class.java" -2]
  [java.lang.Class forName "Class.java" 348]
  [clojure.lang.RT classForName "RT.java" 2204]
  [clojure.lang.RT classForName "RT.java" 2213]
  [javafx$f <clinit> "javafx.clj" 4]
  [sun.reflect.NativeConstructorAccessorImpl newInstance0 "NativeConstructorAccessorImpl.java" -2]
  [sun.reflect.NativeConstructorAccessorImpl newInstance "NativeConstructorAccessorImpl.java" 62]
  [sun.reflect.DelegatingConstructorAccessorImpl newInstance "DelegatingConstructorAccessorImpl.java" 45]
  [java.lang.reflect.Constructor newInstance "Constructor.java" 423]
  [java.lang.Class newInstance "Class.java" 442]
  [clojure.lang.Compiler$ObjExpr eval "Compiler.java" 4989]
  [clojure.lang.Compiler$DefExpr eval "Compiler.java" 457]
  [clojure.lang.Compiler eval "Compiler.java" 7067]
  [clojure.lang.Compiler load "Compiler.java" 7514]
  [clojure.lang.RT loadResourceScript "RT.java" 379]
  [clojure.lang.RT loadResourceScript "RT.java" 370]
  [clojure.lang.RT load "RT.java" 460]
  [clojure.lang.RT load "RT.java" 426]
  [clojure.core$load$fn__6550 invoke "core.clj" 6051]
  [clojure.core$load invokeStatic "core.clj" 6050]
  [clojure.core$load doInvoke "core.clj" 6034]
  [clojure.lang.RestFn invoke "RestFn.java" 408]
  [clojure.core$load_one invokeStatic "core.clj" 5853]
  [clojure.core$load_one invoke "core.clj" 5848]
  [clojure.core$load_lib$fn__6495 invoke "core.clj" 5893]
  [clojure.core$load_lib invokeStatic "core.clj" 5892]
  [clojure.core$load_lib doInvoke "core.clj" 5873]
  [clojure.lang.RestFn applyTo "RestFn.java" 142]
  [clojure.core$apply invokeStatic "core.clj" 659]
  [clojure.core$load_libs invokeStatic "core.clj" 5930]
  [clojure.core$load_libs doInvoke "core.clj" 5914]
  [clojure.lang.RestFn applyTo "RestFn.java" 137]
  [clojure.core$apply invokeStatic "core.clj" 659]
  [clojure.core$require invokeStatic "core.clj" 5952]
  [clojure.core$require doInvoke "core.clj" 5952]
  [clojure.lang.RestFn invoke "RestFn.java" 408]
  [user$eval11 invokeStatic "NO_SOURCE_FILE" 1]
  [user$eval11 invoke "NO_SOURCE_FILE" 1]
  [clojure.lang.Compiler eval "Compiler.java" 7062]
  [clojure.lang.Compiler eval "Compiler.java" 7025]
  [clojure.core$eval invokeStatic "core.clj" 3211]
  [clojure.core$eval invoke "core.clj" 3207]
  [clojure.main$repl$read_eval_print__8574$fn__8577 invoke "main.clj" 243]
  [clojure.main$repl$read_eval_print__8574 invoke "main.clj" 243]
  [clojure.main$repl$fn__8583 invoke "main.clj" 261]
  [clojure.main$repl invokeStatic "main.clj" 261]
  [clojure.main$repl_opt invokeStatic "main.clj" 325]
  [clojure.main$main invokeStatic "main.clj" 424]
  [clojure.main$main doInvoke "main.clj" 387]
  [clojure.lang.RestFn invoke "RestFn.java" 397]
  [clojure.lang.AFn applyToHelper "AFn.java" 152]
  [clojure.lang.RestFn applyTo "RestFn.java" 132]
  [clojure.lang.Var applyTo "Var.java" 702]
  [clojure.main main "main.java" 37]]}

JavaFX.java

import javafx.scene.control.Cell;

public class JavaFX {
    public static Class f() {
        return Cell.class;
    }
}

JavaFX.java.bytecode

Classfile /Users/ragnardahlen/projects/github/ragnard/clojure-javafx-java9/JavaFX.class
  Last modified Oct 10, 2017; size 284 bytes
  MD5 checksum c49770cd39de3234f25104e32bc37aa0
  Compiled from "JavaFX.java"
public class JavaFX
  minor version: 0
  major version: 52
  flags: ACC_PUBLIC, ACC_SUPER
Constant pool:
   #1 = Methodref          #4.#13         // java/lang/Object."<init>":()V
   #2 = Class              #14            // javafx/scene/control/Cell
   #3 = Class              #15            // JavaFX
   #4 = Class              #16            // java/lang/Object
   #5 = Utf8               <init>
   #6 = Utf8               ()V
   #7 = Utf8               Code
   #8 = Utf8               LineNumberTable
   #9 = Utf8               f
  #10 = Utf8               ()Ljava/lang/Class;
  #11 = Utf8               SourceFile
  #12 = Utf8               JavaFX.java
  #13 = NameAndType        #5:#6          // "<init>":()V
  #14 = Utf8               javafx/scene/control/Cell
  #15 = Utf8               JavaFX
  #16 = Utf8               java/lang/Object
{
  public JavaFX();
    descriptor: ()V
    flags: ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
         0: aload_0
         1: invokespecial #1                  // Method java/lang/Object."<init>":()V
         4: return
      LineNumberTable:
        line 3: 0

  public static java.lang.Class f();
    descriptor: ()Ljava/lang/Class;
    flags: ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: ldc           #2                  // class javafx/scene/control/Cell
         2: areturn
      LineNumberTable:
        line 5: 0
}
SourceFile: "JavaFX.java"