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semuxproject / semux-core

Semux Core
https://www.semux.org
MIT License
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AtkWrapper not found #64

Closed phash closed 5 years ago

phash commented 6 years ago

Hi there,

System information

Semux version: 1.4.0 (github clone)

OS & Version: Linux Mint 19

Expected behaviour

Gui starts

Actual behaviour

GUI does not start. Error message: Exception in thread "main" java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper at java.desktop/java.awt.Toolkit.newAWTError(Toolkit.java:472) at java.desktop/java.awt.Toolkit.fallbackToLoadClassForAT(Toolkit.java:488) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1608) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at java.desktop/java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:532) at java.desktop/java.awt.Toolkit.getDefaultToolkit(Toolkit.java:613) at java.desktop/java.awt.Window.getToolkit(Window.java:1375) at java.desktop/java.awt.Window.init(Window.java:518) at java.desktop/java.awt.Window.<init>(Window.java:549) at java.desktop/java.awt.Frame.<init>(Frame.java:423) at java.desktop/java.awt.Frame.<init>(Frame.java:388) at java.desktop/javax.swing.JFrame.<init>(JFrame.java:180) at org.semux.gui.WelcomeFrame.<init>(WelcomeFrame.java:59) at org.semux.gui.SemuxGui.showWelcome(SemuxGui.java:225) at org.semux.gui.SemuxGui.start(SemuxGui.java:192) at org.semux.gui.SemuxGui.main(SemuxGui.java:110) Caused by: java.lang.ClassNotFoundException: org.GNOME.Accessibility.AtkWrapper at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:190) at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:499) at java.base/java.lang.Class.forName0(Native Method) at java.base/java.lang.Class.forName(Class.java:374) at java.desktop/java.awt.Toolkit.fallbackToLoadClassForAT(Toolkit.java:485)

Steps to reproduce the behaviour

Try to run it on newer Ubuntu distributions with JDK10

stated as a bug here: https://bugs.openjdk.java.net/browse/JDK-8204862

phash commented 6 years ago

possible fix, but this has to be delivered from semux: edit /etc/java-11-openjdk/accessibility.properties comment the line assistive_technologies=org.GNOME.Accessibility.AtkWrapper

this is not a good thing, though, we need a better solution

semuxgo commented 5 years ago

This is more of a JDK issue.