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I recently upgraded my ubuntu sony vaio laptop from 16.04 to 18.04 and now that this has been completed I can't seem to open an important marking programme that I use to mark and return student work. The software in question is written for my university in java code to enable it to run on any operating system. I have previously opened the software up in Java 7 and Java 8 using previous versions of ubuntu. I have not experienced this problem before and was surprised. I need a solution urgently and would be most grateful for any suggestions. Thank you.

My sony viao specs are: Memory 2.0 GiB Intel® Core™2 CPU T7200 @ 2.00GHz × 2 Intel® 945GM x86/MMX/SSE2 GNOME 3.28.2 OS type 32-bit Disk 310.8 GB

Error message when opening java file in terminal with /home/sabirah/Desktop/etmaHandlerJLinux/etmaHandlerJLinux as follows:

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$OfRef.evaluateSequential(ForEachOps.java:173)
    at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
    at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
    at java.desktop/java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:532)
    at java.desktop/java.awt.Toolkit.getDefaultToolkit(Toolkit.java:613)
    at java.desktop/java.awt.Toolkit.getEventQueue(Toolkit.java:1494)
    at java.desktop/java.awt.EventQueue.invokeLater(EventQueue.java:1312)
    at etmaHandler.EtmaHandlerJ.main(EtmaHandlerJ.java:11417)
Caused by: java.lang.ClassNotFoundException: org.GNOME.Accessibility.AtkWrapper
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
    at java.base/jdk.internal.loader.ClassLoaders$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)
    ... 14 more
N0rbert
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chris sailor
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    Please start application from terminal and add error output to the question. – N0rbert Sep 09 '18 at 19:14
  • OK good idea - but how do I start an application in terminal? What command line do I need and how do I select an application location that is located within a file that is on the desktop? Please excuse my ignorance. – chris sailor Sep 09 '18 at 19:17
  • Make right click on desktop shortcut, view its properties (on GNOME with <Ctrl+i>). Then copy value of Command to the terminal. Or view shortcut with text editor (you need Exec field). – N0rbert Sep 09 '18 at 19:20
  • /home/sabirah/Desktop/etmaHandlerJLinux is the location. How do I ask termial to run the software? Is is something I need sudo apt-get powers for? Do I type sudo apt-get run /home/sabirah/Desktop/etmaHandlerJLinux ? – chris sailor Sep 09 '18 at 20:00
  • apt-get is not related to current problem. Open terminal and execute /home/sabirah/Desktop/etmaHandlerJLinux in it by simple copy and paste. – N0rbert Sep 09 '18 at 20:10
  • I did this and get following in terminal: bash: /home/sabirah/Desktop/etmaHandlerJLinux: Is a directory – chris sailor Sep 09 '18 at 20:12
  • Then you incorrectly read Command field of desktop file. You need to get full executable path and copy it exactly to the terminal. It may consist of two parts - directory /home/sabirah/Desktop/etmaHandlerJLinux and name of executable file or script (something like runme.sh). So in my notation you need to run /home/sabirah/Desktop/etmaHandlerJLinux/runme.sh from terminal (change runme.sh to correct file-name). – N0rbert Sep 09 '18 at 20:14
  • Not sure how to do this. I followed your instructions and copied the exact location from properties. This is the location of the java file that will not open: /home/sabirah/Desktop/etmaHandlerJLinux. Sorry did not see rest of your comment. Will try the runme.sh bit and get back to you. Thank you : O ). Ok I tried with rume.sh and it did not recognise directory. How do I work out the correct file-name? – chris sailor Sep 09 '18 at 20:22
  • Please add output of the grep -ir etmaHandlerJLinux ~/Desktop command to the question. – N0rbert Sep 09 '18 at 20:24
  • OK I got there by copying the file name at the end of the location in terminal. I typed into terminal the following command: /home/sabirah/Desktop/etmaHandlerJLinux/etmaHandlerJLinux Then terminal came back with the following error message: sabirah@zurisuri:~$ /home/sabirah/Desktop/etmaHandlerJLinux/etmaHandlerJ.jar 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) – chris sailor Sep 09 '18 at 20:37
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    Got it. This is what I supposed. Possible duplicate of Can't run Java applications (like logisim) due to "Assistive Technology not found" error – N0rbert Sep 09 '18 at 20:38
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    Well thank you for all your help and patience! At least we know why it is not working! : O ) – chris sailor Sep 09 '18 at 20:40
  • You can fix it with commands from duplicate answer. Currently many Java applications are broken this way. – N0rbert Sep 09 '18 at 20:42
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    Thank you so much Norbert. I see you had some similar issues yourself and solved them! I will try your solution. Fingers crossed! : O ) – chris sailor Sep 09 '18 at 20:43

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