superclass access check failure when creating new instance of MonacoFX

[EasyG0ing1]

Hello,

Using Java 16, if I simply create a new JavaFX application in IntelliJ, then add the Maven dependency for MonacoFX, then add this to the module-info.java file:

requires eu.mihosoft.monacofx;

Then add this one line to the starting class (which does run successfully without adding this line):

MonacoFX monacoFX = new MonacoFX();

I receive this error when I try to run the code:

java.lang.reflect.InvocationTargetException
...
Caused by: java.lang.RuntimeException: Exception in Application start method
...
Caused by: java.lang.IllegalAccessError: superclass access check failed: class com.sun.javafx.sg.prism.web.NGWebView (in unnamed module @0x1da23d11) cannot access class com.sun.javafx.sg.prism.NGGroup (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.sg.prism to unnamed module @0x1da23d11

Any ideas on how to fix it?

Thank you,

Mike

[EasyG0ing1]

After creating a question about this problem on stackoverflow.com, which can be seen here, I made the following adjustments to my project, which ended up fixing this issue, and now my project runs and MonacoFX works beautifully:

First, I had to add this to my module-info.java file:

requires javafx.web;
requires eu.mihosoft.monacofx;

Next, I changed my JDK in IntelliJ to use version 17.0.1 and I made these changes in my POM file:

    <properties>
        <java.version>17</java.version>
        <javafx.version>17.0.1</javafx.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>${javafx.version}</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-fxml</artifactId>
            <version>${javafx.version}</version>
        </dependency>
        <dependency>
            <groupId>net.synedra</groupId>
            <artifactId>validatorfx</artifactId>
            <version>0.1.13</version>
            <exclusions>
                <exclusion>
                    <groupId>org.openjfx</groupId>
                    <artifactId>*</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-web</artifactId>
            <version>${javafx.version}</version>
        </dependency>
        <dependency>
            <groupId>eu.mihosoft.monacofx</groupId>
            <artifactId>monacofx</artifactId>
            <version>0.0.7</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>${java.version}</source>
                    <target>${java.version}</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.openjfx</groupId>
                <artifactId>javafx-maven-plugin</artifactId>
                <version>0.0.7</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>3.2.0</version>
            </plugin>
        </plugins>
    </build>
</project>

[miho]

This is related to Java modules. MonacoFX supports automatic-module names but does not include a module-ionfo.java. Therefore, if you choose to use the module system you are required to declare the dependencies.