Exception in thread "FXLauncher-Thread" java.lang.IllegalAccessError: class fxlauncher.Launcher$1 (in module fxlauncher) cannot access class com.sun.javafx.application.PlatformImpl (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.application to module fxlauncher

[edovale]

Hi,

I have been banging my head trying to figure this problem out. The error message is self-explanatory. It seems fxlauncher is attempting to access a non exported class.

What is a way to solve this problem?

Command being ran:

java -Djava.system.class.loader=fxlauncher.FxlauncherClassCloader 
   --add-modules java.xml.bind,javafx.base,javafx.fxml,javafx.controls,javafx.graphics,javafx.web 
   -Dfile.encoding=UTF-8 
   -classpath 
          code/src/javafx-agent/target/classes:
          .m2/repository/com/microsoft/sqlserver/mssql-jdbc/10.2.0.jre17/mssql-jdbc-10.2.0.jre17.jar:
          .m2/repository/org/slf4j/jcl-over-slf4j/2.0.0-alpha7/jcl-over-slf4j-2.0.0-alpha7.jar:
          .m2/repository/org/slf4j/slf4j-api/2.0.0-alpha7/slf4j-api-2.0.0-alpha7.jar:
          .m2/repository/org/glassfish/jaxb/jaxb-runtime/2.3.1/jaxb-runtime-2.3.1.jar:
          .m2/repository/org/glassfish/jaxb/txw2/2.3.1/txw2-2.3.1.jar:
          .m2/repository/com/sun/istack/istack-commons-runtime/3.0.7/istack-commons-runtime-3.0.7.jar:
          .m2/repository/org/jvnet/staxex/stax-ex/1.8/stax-ex-1.8.jar:
          .m2/repository/com/sun/xml/fastinfoset/FastInfoset/1.2.15/FastInfoset-1.2.15.jar:
          .m2/repository/javax/activation/javax.activation-api/1.2.0/javax.activation-api-1.2.0.jar:
          .m2/repository/javax/xml/bind/jaxb-api/2.3.1/jaxb-api-2.3.1.jar 
-p 
         javafx-agent/target/app 
-m 
         fxlauncher/fxlauncher.Launcher --app=javafx-agent/target/app/app.xml```

Here is the stacktrace I am getting:

OpenJDK 64-Bit Server VM warning: Archived non-system classes are disabled because the java.system.class.loader property is specified (value = "fxlauncher.FxlauncherClassCloader"). To use archived non-system classes, this property must not be set
logging to /var/folders/8q/ln9l7ksj3fn8419bb09l3gxm0000gn/T//fxlauncher.log
Apr. 14, 2022 4:04:07 P.M. fxlauncher.AbstractLauncher syncManifest
INFO: Loading manifest from 'app' parameter supplied: javafx-agent/target/app/app.xml/
Apr. 14, 2022 4:04:08 P.M. fxlauncher.AbstractLauncher syncFiles
INFO: Using cache dir .
Apr. 14, 2022 4:04:08 P.M. fxlauncher.AbstractLauncher createApplicationEnvironment
INFO: Loading appClass ai.dentacloud.dentacloudagent.DentacloudApplication
Exception in thread "FXLauncher-Thread" java.lang.IllegalAccessError: class fxlauncher.Launcher$1 (in module fxlauncher) cannot access class com.sun.javafx.application.PlatformImpl (in module javafx.graphics) because module javafx.graphics does not export com.sun.javafx.application to module fxlauncher
	at fxlauncher/fxlauncher.Launcher$1.createApplication(Launcher.java:51)
	at fxlauncher/fxlauncher.AbstractLauncher.createApplicationEnvironment(AbstractLauncher.java:176)
	at fxlauncher/fxlauncher.Launcher.lambda$start$0(Launcher.java:158)
	at java.base/java.lang.Thread.run(Thread.java:833)

[ygarg465]

Hey @edovale , You can easily solve this issue by adding this line --add-exports javafx.graphics/com.sun.javafx.application=ALL-UNNAMED after --add-modules. And any similar future issue can be resolved using this same pattern. It works for exports and opens problem