I was able to run JFoenix with java13, you need to do bit of figuring out. One more person asked a similar question just yesterday see this : https://stackoverflow.com/a/61473762/2448015
And also you can see in comments 2 people gave you the correct solution. All I can additionally contribute is give you are working example.
If you are directly running, then you just need to add the relevant vm flags such as
--module-path=D:\[YOUR DIRECTOY\javafx-sdk-13\lib
--add-modules=javafx.base, javafx.controls, javafx.fxml, javafx.graphics, javafx.media, javafx.swing, javafx.web
--add-opens
javafx.base/com.sun.javafx.runtime=ALL-UNNAMED
--add-opens
javafx.controls/com.sun.javafx.scene.control.behavior=ALL-UNNAMED
--add-opens
javafx.controls/com.sun.javafx.scene.control=ALL-UNNAMED
--add-opens
javafx.base/com.sun.javafx.binding=ALL-UNNAMED
--add-opens
javafx.base/com.sun.javafx.event=ALL-UNNAMED
--add-opens
javafx.graphics/com.sun.javafx.stage=ALL-UNNAMED
Refer : https://github.com/jfoenixadmin/JFoenix/issues/889#issuecomment-450744122
If you are using maven, you can refer to the following :
<option>--add-opens</option>
<option>javafx.graphics/com.sun.javafx.scene=ALL-UNNAMED</option>
In the POM configuration for the javafx-maven-plugin
For this, you need to fix the pom, something like this
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>nu.sharabheshwara.A456B123</groupId>
<artifactId>nu-sharabheshwara-A456B123-MyFx</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-fxml</artifactId>
<version>11</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-controls</artifactId>
<version>11</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-web</artifactId>
<version>11</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-media</artifactId>
<version>11</version>
</dependency>
<dependency>
<groupId>com.jfoenix</groupId>
<artifactId>jfoenix</artifactId>
<version>9.0.1</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.openjfx</groupId>
<artifactId>javafx-maven-plugin</artifactId>
<version>0.0.4</version>
<configuration>
<mainClass>application.Main</mainClass>
<options>
<option>--add-opens</option><option>javafx.graphics/com.sun.javafx.scene=ALL-UNNAMED</option>
<option>--add-opens</option><option>javafx.controls/com.sun.javafx.scene.control.behavior=ALL-UNNAMED</option>
<option>--add-opens</option><option>javafx.controls/com.sun.javafx.scene.control=ALL-UNNAMED</option>
<option>--add-opens</option><option>javafx.base/com.sun.javafx.binding=ALL-UNNAMED</option>
<option>--add-opens</option><option>javafx.graphics/com.sun.javafx.stage=ALL-UNNAMED</option>
<option>--add-opens</option><option>javafx.base/com.sun.javafx.event=ALL-UNNAMED</option>
<option>--add-exports</option><option>javafx.controls/com.sun.javafx.scene.control.behavior=ALL-UNNAMED</option>
<option>--add-exports</option><option>javafx.controls/com.sun.javafx.scene.control=ALL-UNNAMED</option>
<option>--add-exports</option><option>javafx.base/com.sun.javafx.binding=ALL-UNNAMED</option>
<option>--add-exports</option><option>javafx.graphics/com.sun.javafx.stage=ALL-UNNAMED</option>
<option>--add-exports</option><option>javafx.base/com.sun.javafx.event=ALL-UNNAMED</option>
</options>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<compilerArgs>
<arg>--add-opens</arg><arg>javafx.graphics/com.sun.javafx.scene=ALL-UNNAMED</arg>
</compilerArgs>
</configuration>
</plugin>
</plugins>
</build>
</project>
To run, use the command mvn javafx:run
or mvn clean javafx:run
. This will use javafx-maven-client instead of apache.
If this doesn't help, you can simply check this github sample maven project where you can put your existing jfoenix code and make it work
https://github.com/shashaanktulsyan/java-javafx-maven-learning-tips/tree/master/nu-sharabheshwara-jfoenix_maven_javafx11_fix_demo
This should surely 100% solve your problem.