Getting ...does not export to module exception after changing to non-modular project

[jackpeters667]

I just switched my project from modular to non modular and i'm getting this exception all of a sudden.

Exception in thread "JavaFX Application Thread" java.lang.IllegalAccessError: superclass access check failed: class com.jfoenix.controls.behavior.JFXGenericPickerBehavior (in unnamed module @0x449613ed) cannot access class com.sun.javafx.scene.control.behavior.ComboBoxBaseBehavior (in module javafx.controls) because module javafx.controls does not export com.sun.javafx.scene.control.behavior to unnamed module @0x449613ed at java.base/java.lang.ClassLoader.defineClass1(Native Method) at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1016) at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174) at java.base/jdk.internal.loader.BuiltinClassLoader.defineClass(BuiltinClassLoader.java:800) at java.base/jdk.internal.loader.BuiltinClassLoader.findClassOnClassPathOrNull(BuiltinClassLoader.java:698) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:621) at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:579) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) at com.jfoenix.skins.JFXGenericPickerSkin.<init>(JFXGenericPickerSkin.java:62) at com.jfoenix.skins.JFXDatePickerSkin.<init>(JFXDatePickerSkin.java:60) at com.jfoenix.controls.JFXDatePicker.createDefaultSkin(JFXDatePicker.java:100) at javafx.controls/javafx.scene.control.Control.doProcessCSS(Control.java:897) at javafx.controls/javafx.scene.control.Control$1.doProcessCSS(Control.java:89) at javafx.controls/com.sun.javafx.scene.control.ControlHelper.processCSSImpl(ControlHelper.java:67) at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145) at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1400) at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125) at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98) at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145) at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1400) at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125) at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98) at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145) at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1400) at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125) at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98) at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145) at javafx.graphics/javafx.scene.Parent.doProcessCSS(Parent.java:1400) at javafx.graphics/javafx.scene.Parent$1.doProcessCSS(Parent.java:125) at javafx.graphics/com.sun.javafx.scene.ParentHelper.processCSSImpl(ParentHelper.java:98) at javafx.graphics/com.sun.javafx.scene.NodeHelper.processCSS(NodeHelper.java:145) at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9542) at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9535) at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9535) at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9535) at javafx.graphics/javafx.scene.Node.processCSS(Node.java:9535) at javafx.graphics/javafx.scene.Scene.doCSSPass(Scene.java:569) at javafx.graphics/javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2505) at javafx.graphics/com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:412) at java.base/java.security.AccessController.doPrivileged(Native Method) at javafx.graphics/com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:411) at javafx.graphics/com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:438) at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:563) at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:543) at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:536) at javafx.graphics/com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:342) at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96) at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication._runLoop(Native Method) at javafx.graphics/com.sun.glass.ui.gtk.GtkApplication.lambda$runLoop$11(GtkApplication.java:277) at java.base/java.lang.Thread.run(Thread.java:834)

I'm using gradle and this is how I add my exports in my buld.gradle file
applicationDefaultJvmArgs = ['--add-exports=javafx.controls/com.sun.javafx.scene.control.behavior=com.jfoenix', '--add-exports=javafx.graphics/com.sun.javafx.scene=com.jfoenix', '--add-opens=java.base/java.lang.reflect=com.jfoenix', '--add-opens=java.base/java.lang.reflect=ALL-UNNAMED', '--add-exports=javafx.controls/com.sun.javafx.scene.control=com.jfoenix', '--add-exports=javafx.base/com.sun.javafx.binding=com.jfoenix', '--add-exports=javafx.graphics/com.sun.javafx.stage=com.jfoenix', '--add-exports=javafx.base/com.sun.javafx.event=com.jfoenix']

Am I missing something else?
It was working just fine as a modular project

[askjgafdsdfassflsdjfljdg]

I'm using a modular project but it still does not work and issues same error:

Caused by: java.lang.IllegalAccessError: class com.jfoenix.skins.JFXTabPaneSkin (in module com.jfoenix) cannot access class com.sun.javafx.scene.control.behavior.TabPaneBehavior (in module javafx.controls) because module javafx.controls does not export com.sun.javafx.scene.control.behavior to module com.jfoenix

module-info.java file:

requires javafx.controls;
requires javafx.fxml;
requires javafx.graphics;
requires spring.boot.autoconfigure;
requires spring.context;
requires spring.boot;
requires spring.beans;
requires com.jfoenix;
requires spring.core;
    
opens sample to spring.core;
opens sample.controller to javafx.fxml;
exports sample.controller to spring.beans;
exports sample;

[buttonmasher3]

I'm using a modular project but it still does not work and issues same error:

Caused by: java.lang.IllegalAccessError: class com.jfoenix.skins.JFXTabPaneSkin (in module com.jfoenix) cannot access class com.sun.javafx.scene.control.behavior.TabPaneBehavior (in module javafx.controls) because module javafx.controls does not export com.sun.javafx.scene.control.behavior to module com.jfoenix

module-info.java file:

requires javafx.controls;
requires javafx.fxml;
requires javafx.graphics;
requires spring.boot.autoconfigure;
requires spring.context;
requires spring.boot;
requires spring.beans;
requires com.jfoenix;
requires spring.core;
    
opens sample to spring.core;
opens sample.controller to javafx.fxml;
exports sample.controller to spring.beans;
exports sample;

Did you add exports? It was working just fine for me with modular, but I had to switch to non-modular because of conflicting libraries and it wasn't as easy to solve the issue, So I just opted to change, but then my JFXDatePickers dont work all of a sudden.

[askjgafdsdfassflsdjfljdg]

I'm using a modular project but it still does not work and issues same error:
Caused by: java.lang.IllegalAccessError: class com.jfoenix.skins.JFXTabPaneSkin (in module com.jfoenix) cannot access class com.sun.javafx.scene.control.behavior.TabPaneBehavior (in module javafx.controls) because module javafx.controls does not export com.sun.javafx.scene.control.behavior to module com.jfoenix
module-info.java file:

requires javafx.controls;
requires javafx.fxml;
requires javafx.graphics;
requires spring.boot.autoconfigure;
requires spring.context;
requires spring.boot;
requires spring.beans;
requires com.jfoenix;
requires spring.core;
    
opens sample to spring.core;
opens sample.controller to javafx.fxml;
exports sample.controller to spring.beans;
exports sample;

Did you add exports? It was working just fine for me with modular, but I had to switch to non-modular because of conflicting libraries and it wasn't as easy to solve the issue, So I just opted to change, but then my JFXDatePickers dont work all of a sudden.

I also changed it to a non-modular form then I did add --add-exports commands to the applicationDefaultJvmArgs and it worked for me. But anyway I think this is kind of dirty solution and the JFoenix core libraries should be changed to be compatible with OpenJFX +11 and its modules.

[jackpeters667]

I'm using a modular project but it still does not work and issues same error:
Caused by: java.lang.IllegalAccessError: class com.jfoenix.skins.JFXTabPaneSkin (in module com.jfoenix) cannot access class com.sun.javafx.scene.control.behavior.TabPaneBehavior (in module javafx.controls) because module javafx.controls does not export com.sun.javafx.scene.control.behavior to module com.jfoenix
module-info.java file:

requires javafx.controls;
requires javafx.fxml;
requires javafx.graphics;
requires spring.boot.autoconfigure;
requires spring.context;
requires spring.boot;
requires spring.beans;
requires com.jfoenix;
requires spring.core;
    
opens sample to spring.core;
opens sample.controller to javafx.fxml;
exports sample.controller to spring.beans;
exports sample;

Did you add exports? It was working just fine for me with modular, but I had to switch to non-modular because of conflicting libraries and it wasn't as easy to solve the issue, So I just opted to change, but then my JFXDatePickers dont work all of a sudden.

Glad to hear that someone also has the same issue (I'm sorry XD). If you find a workaround, update me

[jackpeters667]

@buttonmasher3 @askjgafdsdfassflsdjfljdg Could you guys share your --addexports with me? And which framework are you on? Gradle?

[FelipeAumannRS]

Exactly same problem here. @jfoenixadmin, it looks like a bug.

Possibly fix: just add the following row to your jvm args:
"--add-opens=java.base/java.lang.reflect=com.jfoenix",

It should look like this:

def args = [
"--add-opens=java.base/java.lang.reflect=com.jfoenix",
]

run {
jvmArgs = args
}

Heres my complete list of VM arguments:

def args = [
"--add-exports=javafx.graphics/com.sun.javafx.scene=ALL-UNNAMED",
"--add-exports=javafx.controls/com.sun.javafx.scene.control.behavior=ALL-UNNAMED",
"--add-exports=javafx.controls/com.sun.javafx.scene.control=ALL-UNNAMED",
"--illegal-access=warn",
"--add-opens=javafx.controls/javafx.scene.control.skin=com.jfoenix",
"--add-exports=javafx.controls/com.sun.javafx.scene.control=com.jfoenix",
"--add-exports=javafx.base/com.sun.javafx.binding=com.jfoenix",
//the next line changes everything.
"--add-opens=java.base/java.lang.reflect=com.jfoenix",

    "--add-exports=javafx.controls/javafx.scene.control.skin=com.jfoenix",
    "--add-exports=java.base/java.lang.reflect=ALL-UNNAMED",
    "--add-exports=java.base/java.lang.reflect=com.jfoenix",
    "--add-exports=javafx.controls/com.Sun.javafx.scene.control.behavior=com.jfoenix",
    "--add-exports=javafx.graphics/com.sun.javafx.stage=com.jfoenix",
    "--add-exports=javafx.controls/com.sun.javafx.scene.control.behavior=com.jfoenix",

    "--add-exports=javafx.base/com.sun.javafx.event=ALL-UNNAMED",

    "--add-exports=javafx.graphics/com.sun.javafx.scene=ALL-UNNAMED",
    "--add-exports=javafx.controls/com.sun.javafx.scene.control.behavior" +
            "=ALL-UNNAMED",
    "--add-exports=javafx.controls/com.sun.javafx.scene.control=ALL-UNNAMED",
    "--add-exports=javafx.controls/com.sun.javafx.scene.control.behavior" +
            "=com.jfoenix",
    "--add-exports=javafx.controls/com.sun.javafx.binding=com.jfoenix",
    "--illegal-access=warn",
    "--add-opens=javafx.controls/javafx.scene.control.skin=com.jfoenix",
    "--add-opens=java.base/java.lang.reflect=ALL-UNNAMED",
    "--add-exports=javafx.controls/com.sun.javafx.scene.control.behavior" +
            "=com.jfoenix",
    "--add-exports=javafx.controls/com.sun.javafx.scene.control=com.jfoenix",
    "--add-exports=javafx.base/com.sun.javafx.binding=com.jfoenix",
    "--add-exports=javafx.graphics/com.sun.javafx.stage=com.jfoenix",
    "--add-exports=javafx.base/com.sun.javafx.event=com.jfoenix",

    "--add-exports=javafx.controls/com.sun.javafx.scene.control.behavior=com.jfoenix",
    "--add-exports=javafx.controls/com.sun.javafx.scene.control=com.jfoenix",
    "--add-exports=javafx.base/com.sun.javafx.binding=com.jfoenix",
    "--add-exports=javafx.graphics/com.sun.javafx.stage=com.jfoenix",
    "--add-exports=javafx.base/com.sun.javafx.event=com.jfoenix"

]

run {
jvmArgs = args
}

Like my answer if it helps :-)

[louhy]

All that junk looked disgusting to me so and I don't like copy-pasting tons of crap without at least knowing it's required, so I was able to narrow down what I needed down to this for a non-modular project (in my case at least):

run {
jvmArgs = [
"--add-opens=java.base/java.lang.reflect=ALL-UNNAMED",
"--add-exports=javafx.controls/com.sun.javafx.scene.control.behavior=ALL-UNNAMED",
"--add-exports=javafx.controls/com.sun.javafx.scene.control=ALL-UNNAMED",
"--add-exports=javafx.base/com.sun.javafx.binding=ALL-UNNAMED",
"--add-exports=javafx.graphics/com.sun.javafx.stage=ALL-UNNAMED",
"--add-exports=javafx.base/com.sun.javafx.event=ALL-UNNAMED"
]
}

It's not hard to check the error output and add what you need one by one once you've got the syntax as demonstrated above. I am a little surprised I didn't need to export anything at all to com.jfoenix, but I can't argue with "works on my machine".

Maybe the list can vary depending on your specific case. But this works for me with Java 17.0.1 (fx-zulu VM) and Gradle 7.3.2.

[JJBRT]

Please take a look at my article that explain how to export all modules to all modules at runtime in Java 16 and later without using any JVM parameter.

[louhy]

Interesting alternative above. I probably won't go that route in my case but good to know there's other choices.

[Maslow5941]

module javaFxException {
requires javafx.controls;
requires javafx.fxml;

opens application to javafx.graphics, javafx.fxml;
opens gui to javafx.graphics, javafx.fxml;

}