[orca-list] Getting java apps to work with Orca

[Rudolf Weeber <kontakt rudolfweeber de>]

Hi,

I have trouble getting orca to work with Java applications. My final goal is to use CLion, but I don't even 
get the JDK demos like FileChooser.jar to work.

I'm on Ubuntu 18.04 and have the libatk-wrapper-java installed. I have also uncommented

assistive_technologies=org.GNOME.Accessibility.AtkWrapper
in /etc/java-8-openjdk/accesibility.properties.
Then, I checke via
java -XX:+TTraceClassLoading -jar FileChooser.jar
that the atk wrapper actually gets loaded:
[...]

[Loaded org.GNOME.Accessibility.AtkWrapper from 
file:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/java-atk-wrapper.jar]
[...]
[Loaded java.awt.event.WindowListener from /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar]
[Loaded java.awt.event.WindowStateListener from /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar]
[Loaded java.awt.event.WindowFocusListener from /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar]
[Loaded java.awt.event.WindowAdapter from /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar]
[Loaded org.GNOME.Accessibility.AtkWrapper$2 from 
file:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/java-atk-wrapper.jar]
[Loaded java.awt.event.ComponentListener from /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar]
[Loaded java.awt.event.ComponentAdapter from /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar]
[Loaded org.GNOME.Accessibility.AtkWrapper$3 from 
file:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/java-atk-wrapper.jar]
[Loaded org.GNOME.Accessibility.AtkWrapper$6 from 
file:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/java-atk-wrapper.jar]
[...]

Still, orca does not present the window launched by the java app.
What am I missing?
Any help would be appreciated

Thanks in advance!
Regards, Rudolf