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OpenRadar not starting, on openSUSE Leap 15.0

OpenRadar is a standalone radar screen which connects to the FlightGear multiplayer servers. It is currently being developed.

OpenRadar not starting, on openSUSE Leap 15.0

Postby [Lemmy] » Sun Mar 03, 2019 8:07 pm

I'm trying to run OpenRadar on openSUSE Leap 15, and it dies with the following output:

Code: Select all
lemmy@kumiko:/temp/fgfs/OpenRadar> ./OpenRadar.sh
2019-03-03 21:04:30,103 [main] [[ WARN] OpenRadar [main]] - ************ Open Radar is STARTING ************
2019-03-03 21:04:30,103 [main] [[ INFO] OpenRadar [main]] - OpenJDK Runtime Environment
2019-03-03 21:04:30,103 [main] [[ INFO] OpenRadar [main]] - 10.0.2+13-suse-lp150.2.3.2-x8664
2019-03-03 21:04:30,103 [main] [[ INFO] OpenRadar [main]] - sun.awt.X11GraphicsEnvironment
Exception in thread "main" java.awt.AWTError: Assistive Technology not found:
        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/javax.swing.UIManager.getSystemLookAndFeelClassName(UIManager.java:660)
        at de.knewcleus.openradar.OpenRadar.main(OpenRadar.java:96)
Caused by: java.lang.ClassNotFoundException:
        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)
        ... 13 more


Any ideas?
[Lemmy]
 
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Re: OpenRadar not starting, on openSUSE Leap 15.0

Postby CAT0076 » Sat May 04, 2019 9:49 am

I've the same issue with OpenRadar and Leap 15...
Open a console and do:

sudo zypper in java-11-openjdk-devel

Thi s will install the packages: java-11-openjdk java-11-openjdk-devel java-11-openjdk-headless (170Mb)

When finished, try:

java -jar Openradar.jar

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Re: OpenRadar not starting, on openSUSE Leap 15.0

Postby jomo » Sat May 04, 2019 12:48 pm

[Lemmy] wrote in Sun Mar 03, 2019 8:07 pm:I'm trying to run OpenRadar on openSUSE Leap 15, and it dies with the following output:
...
Exception in thread "main" java.awt.AWTError: Assistive Technology not found:
...
[/code]
Any ideas?

Same happens with normal UBUNTU:
I needed a new Ubuntu-Installation:
- so I did try the new avail Ubuntu 19.04
- and because Iava 8 is not available any more I used Java jdk 11
--> resulted in the same error.

There are several tips in the internet about that "Assistive Technology" - including leaving it out completely, or blank lines or whatever. I gess that needs an JAVA-developer for checking our OpenRdar.jar.

Wolfram: If you read this: Coulld you pls comment on that?
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