This link is my resolution to a somewhat similar error. In summary, our
issue was a "DISPLAY" environment variable. I don't know if headless=true
overrides that or not.
http://archive.midrange.com/java400-l/201603/msg00007.html
From: Matt Pryor <pryor@xxxxxxxxxxxxxxx>
To: java400-l@xxxxxxxxxxxx
Date: 05/09/2016 11:00 AM
Subject: X11 window server error
Sent by: "JAVA400-L" <java400-l-bounces@xxxxxxxxxxxx>
Hi there
We're encountering the following error when attempting to create /
manipulate a BufferedImage.
Can't connect to X11 window server using ':0.0' as the value of the DISPLAY
variable
sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
sun.awt.X11GraphicsEnvironment.access$100(X11GraphicsEnvironment.java:52
sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:155)
java.security.AccessController.doPrivileged(AccessController.java:202)
sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131)
java.lang.J9VMInternals.initializeImpl(Native Method)
java.lang.J9VMInternals.initialize(J9VMInternals.java:200)
java.lang.Class.forNameImpl(Native Method)
java.lang.Class.forName(Class.java:136)
java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnviron
java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1146)
java.awt.image.BufferedImage.getGraphics(BufferedImage.java:1136)
Java is invoked by a CL program and the following properties are already
set:
java.awt.headless=true
os400.awt.native=true
Setting these properties has always solved the problem on other customer
sites however we're still encountering it on this particular iSeries.
Any other suggestions would be gratefully received.
Thanks
Matt
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Matt Pryor
The International Presence Group of Companies
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