Errors with WildFly in Eclipse IDE

[Philippe Merrilees]

Hello,

I recently reinstalled the Eclipse IDE after roughly two years and I am encountering errors when running WildFly through Eclipse that would never occur in the past.

Indeed, whenever I start my WildFly server instance on my laptop or desktop computers (both running Linux), I get the following error messages:

• An internal error occurred during: "Checking Deployment Scanners for server". java.lang.ExceptionInInitializerError

• An internal error occurred during: "Updating Deployment Scanners for Server: WildFly 17". Could not initialize class org.wildfly.security.auth.client.DefaultAuthenticationContextProvider

Everything works fine if I launch WildFly from the command line. I tried with WildFly 17 (the one I was using in the past and used to work fine) and 24 (the newest version) and nothing seems to work in Eclipse, even when I install JBoss Tools from the Eclipse Marketplace.

I also asked about this issue on the Eclipse forums here and I will post any answer I receive there to this post as well.

Thank you for your kind assistance!

[Jean-Francois Maury]

That maybe an issue with Java11/Java8 as Eclipse now requires Java 11 to run.

Can you send the Eclipse log file ?

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Jeff Maury

Manager, DevTools

Red Hat EMEA

jma...@redhat.com   

@RedHat   Red Hat   Red Hat

[Philippe Merrilees]

Jeff Maury,

Thank you very much for taking the time to answer my question! As requested, here is my Eclipse log file which I exported right after reproducing the problem right after deleting the old log file so that everything therein only pertains to the problem itself.

I also wanted to mention two things:

• I have OpenJDK 16 installed on my machine (which, looking at my /lib/jvm directory, appears to be the only Java environment installed on my machine)
• When I try to run a basic HelloWorld Web application, I get the error messages mentioned in my original message (and shown in the "eclipse_errors.png" file attached to this message) even though the server starts and the application deploys successfully. Still, I would like to get rid of these annoying (and, I assume, problematic) error messages.

Thank you, once again, for your time and your willingness to help!

Regards,

Philippe Merrilees

[Philippe Merrilees]

I just tried installing OpenJDK 8 and 11 but:

• OpenJDK 8 still gives me the same errors when I define it as WildFly's runtime environment.
  
• OpenJDK 11 cannot be added to Eclipse's Installed JREs as /lib/jvm/java-11-openjdk "is not a JDK root. Java executable was not found" (so I am unable to try to use it as WildFly's runtime environment).

[Jean-Francois Maury]

You are running Eclipse with a Java 16 VM. It is an unsupported configuration as Java 16 has new limitations. I recommend running Eclipse with a Java 11 VM.

You can try also adding  --illegal-access=permit in eclipse.ini but other issues may happen.





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[Rahim Alizada]

Adding  --add-opens=java.base/java.security=ALL-UNNAMED to eclipse.ini fixed the issue on my side

[Wolfgang]

Are there any plans to improve this?

Recent Eclipse already bundles and runs with Java 17, so it is harder to switch to an older Java version.

[Jean-Francois Maury]

Which version of JBoss Tools are you using ? JBoss Tools 4.21.3 (latest released) is compatible with Java 17

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[Wolfgang]

Hard to say which version is installed, as the plugins have different versions. Attached is a screenshot of the Red Hat plugin versions. Hope they contain the necessary information.

No updates are found on http://download.jboss.org/jbosstools/photon/stable/updates/

My Eclipse installation is rather fresh - created in january this year, with a fresh workspace.

[Jean-Francois Maury]

I did the following:

- Install Eclipse for Java Enterprise 2022-03 with a Java 17 JVM

- Installed JBoss Tools server adapters

- Define and run a Wildfly 22 without problem.

Can you check that your eclipse.ini has:

--add-opens=java.base/java.security=ALL-UNNAMED

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[Wolfgang]

I can confirm that with a completely fresh and blank installation of Eclipse 2022-03, after installing recent JBoss Tools I see that "--add-opens=java.base/java.security=ALL-UNNAMED" is added to the end of "eclipse.ini". Seems that this did not happen when updating an older workspace.

So, this issue is resolved for me.  Many thanks for your support!