$ java -jar aprof-plot.jar
Exception in thread "main" java.awt.AWTError: Assistive Technology not found: org.GNOME.Accessibility.AtkWrapper
    at java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:807)
    at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:886)
    at java.awt.Toolkit.getEventQueue(Toolkit.java:1734)
    at java.awt.EventQueue.invokeLater(EventQueue.java:1264)
    at aprofplot.Main.newWindow(Main.java:33)
    at aprofplot.Main.main(Main.java:359)

Possible explanations I saw here was to install Java-access-bridge. But I am unable to install libaccess-java-bridge.

7 Answers 7


I ran into this same error on my Ubuntu 15.10 server but did not want to install the non-headless version of OpenJDK due to the number of additional dependencies. A simpler solution was to simply disable assistive technologies.

This can be done by editing the accessibility.properties file for OpenJDK 8 (change the version to whichever is actually in use on your system):

sudo vim /etc/java-8-openjdk/accessibility.properties

Comment out the following line:


Also you can edit this line programmatically:

sudo sed -i -e '/^assistive_technologies=/s/^/#/' /etc/java-*-openjdk/accessibility.properties
  • 1
    This is the best solution. Works for android-sdk/tools/draw9patch too (Android SDK Tools)
    – gorlok
    Commented Jan 31, 2016 at 16:53
  • This also worked on my Ubntu 15.10 for fixing freemind that wasn't starting otherwise
    – rubo77
    Commented Feb 23, 2016 at 19:24
  • 20
    it just happened to me today, two and half years after this answer. instead of java-8 it is java-11 now, other than that, helped me, thank you
    – marosg
    Commented Aug 22, 2018 at 12:54
  • 1
    Thanks, this worked for me for starting another software called OpenRefine. java-11-openjdk here as well.
    – Nikhil VJ
    Commented Aug 22, 2018 at 16:21
  • Worked like a charm, just making some adjustments. It's not java-8 here. Commented Sep 4, 2018 at 19:49

Read the following thread. I managed to escape this problem by uninstalling OpenJDK 8 headless and installing OpenJDK 8.


Commands I ran:

sudo dpkg -l | grep openjdk  

This is to verify you are actually running the headless version of JAVA, so no graph library available.

sudo apt-get remove openjdk-8-jre-headless

This is to remove headless version.

sudo apt-get install openjdk-8-jre

This is to install non-headless version of java.

  • This did the trick Commented Nov 26, 2021 at 16:10
  • proper solution Commented Jul 21, 2022 at 14:07

For those who do not have root access on their machines to change the configuration file or do not want to install the full JRE: append -Djavax.accessibility.assistive_technologies=" " to your command, e.g.

$ java -jar aprof-plot.jar -Djavax.accessibility.assistive_technologies=" "

Do note that the " " is important, simply using "nothing" as parameter will cause the JRE to still load whatever is set in /etc/java-8-openjdk/accessibility.properties.

  • 3
    Appending did not solve for me. Prepending changed the message to Assistive Technology not found: not followed by org.GNOME.Accessibility.AtkWrapper. Commented Aug 21, 2018 at 14:19
  • 1
    This worked for me with Ubuntu 18.04 when java set back to version 8 from 10 (because openjfx not available precompiled yet). Other methods listed in this question did not work for me.
    – Chris Good
    Commented Sep 13, 2018 at 9:11

Same issue. In my case I couldn't run FastQC.
This is what I did:

$ sudo apt-get remove openjdk-11-jre-headless

I verified java was gone

$ java -version
bash: /usr/bin/java: No such file or directory
$ sudo apt-get install openjdk-8-jre

Problem solved.


I had to uninstall openjdk-11-jre, eg:

sudo apt remove openjdk-11-jre


sudo apt remove openjdk-11*

to remove all openjdk-11 packages on your system.

This forces your program to run on openjdk-8-jre instead of openjdk-11-jre, as I had both installed. Apparently Java Assistive Technology doesn't run on the openjdk-11-jre package. I believe there is also a way to specify which Java version to run, but I don't know it off the top of my head and I'm sure there's another post on that topic.


Inspired from Marco's answer, but for me it only works in this order (prepending):

java -Djavax.accessibility.assistive_technologies=" " -jar aprof-plot.jar

It solved the problem and the program launched successfully (in my case argouml.jar fakesmtp.jar).

Using Java 8 on Ubuntu 2019.04


This kind of error happens when you have a headless version of the JRE installed. The headless JRE is a subset of the full JRE but lacks GUI features, including support for assistive technologoes.

Install the full JRE (e.g. openjdk11-jre instead of openjdk11-jre-headless) and the error should go away. No need to uninstall the headless JRE.

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