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https://issues.apache.org/jira/browse/NETBEANS-1922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16830505#comment-16830505
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Flavius Stan commented on NETBEANS-1922:
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I updated netbeans to 11.0 version, and now, it show me this error:
java.lang.NullPointerException
at java.desktop/java.awt.Window.init(Window.java:509)
at java.desktop/java.awt.Window.<init>(Window.java:549)
at java.desktop/java.awt.Frame.<init>(Frame.java:423)
at org.netbeans.core.startup.Splash.setRunning(Splash.java:139)
at org.netbeans.core.startup.Main.start(Main.java:271)
at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:98)
at java.base/java.lang.Thread.run(Thread.java:834)
This error happens because Java can't identify a display, because the Mac is
connected to a external device with the lid down.
More people with the issue: https://github.com/processing/processing/issues/5620
Is not Netbeans fault. I will close the issue
> Netbeans not launching if the lid is down connected to a external display
> -------------------------------------------------------------------------
>
> Key: NETBEANS-1922
> URL: https://issues.apache.org/jira/browse/NETBEANS-1922
> Project: NetBeans
> Issue Type: Bug
> Components: ide - Welcome
> Affects Versions: 10.0
> Environment: MacOS Mojave 10.14.2;
> openjdk version "11.0.1" 2018-10-16
> OpenJDK Runtime Environment 18.9 (build 11.0.1+13)
> OpenJDK 64-Bit Server VM 18.9 (build 11.0.1+13, mixed mode);
> Netbeans 10.0
> Reporter: Flavius Stan
> Assignee: Laszlo Kishalmi
> Priority: Major
> Labels: Bug
> Attachments: Captura de pantalla 2019-01-11 a las 21.54.12.png,
> VideoNetbeansEdited 2.7z.001, VideoNetbeansEdited 2.7z.002
>
>
> Netbeans 10 not launching after restart the computer.
> I download the binaries for netbeans 10 at 2019-1-7 to use with MacOs Mojave
> 10.14.2, openjdk 11.0.1. Executing the netbeans UNIX executable, it starts as
> usual, everything works great till I shutdown the computer. When I power up
> the computer again and start netbeans, it just not open, the icon appears in
> the dock and it automatically close, not loading screen. I executed in the
> terminal, but it didn't prompt anything. I edit the netbeans.conf file and
> set the path to jdk in the file, but it didn't work. I tried to set it in
> executing time with the --jdkhome command but anything new. I set the working
> dir manually, I increase the memory heap but any approach was unsuccessfully.
> Netbeans not starting.
> So I give up, and delete the folder with netbeans. Today, 2019/1/11, I
> download netbeans again with more hope, and the first time I execute it, it
> prompts the image attached, I click on disable modules and continue, and as
> the other day, It works great, everything was okay. So I decided to restart
> the computer to see if the issue repeat. And after the restart, netbeans not
> launching again.
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