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https://issues.apache.org/jira/browse/NETBEANS-2865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17166662#comment-17166662
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B R commented on NETBEANS-2865:
-------------------------------

I encountered what I think is something very similar to this issue using...

NetBeans Version: 12.0
O/S: Fedora 32
Gnome Version: 3.36.4
Java Version:

openjdk version "14.0.1" 2020-04-14
OpenJDK Runtime Environment 20.3 (build 14.0.1+7)
OpenJDK 64-Bit Server VM 20.3 (build 14.0.1+7, mixed mode, sharing)

This Netbeans installation was fresh. Preferences, changes, etc. had all been 
made within this version. The ~/.netbeans folder was not upgraded from a 
previous version.

This installation has been working for several weeks without issue. This issue 
began today as follows:

1.) When I start Netbeans, the splash screen is an empty dark gray box. The 
splash logo, which had been appearing, is no longer present.

2.) After some time (~10-15 seconds) the full NetBeans window opens. The name 
of the last project I had open appears in the window's title bar; but, no 
menus, panels, etc. are present.

3.) What remains is a single, dark gray window that can only be closed by click 
the X.

My guess is that I could remove the ~/.netbeans folder and it would start 
working; but, I'd like to get to the bottom of the issue

I have searched my preferences files for null characters using grep but haven't 
found any. I'm not a grep expert, though, so mileage will vary.

I tried adding the --trace command-line parameter to netbeans but it reports 
"Unrecognized option --trace". Did something change in NetBeans 12.0 that 
disabled this?

Does anyone know how I can enable detailed logging of the JVM's work?

Thanks in advance. -Brian

> Cannot run Netbeans 11 using JDK 11
> -----------------------------------
>
>                 Key: NETBEANS-2865
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-2865
>             Project: NetBeans
>          Issue Type: Bug
>    Affects Versions: 11.0
>            Reporter: Hunter Schoonover
>            Priority: Major
>         Attachments: consoleOutput.txt, netbeans.log
>
>
> Please note that this issue does *NOT* occur with JDK 8.
> Downloaded and installed JDK 11 to C:\Program Files\Java\jdk-11.0.4
> Downloaded and unzipped Netbeans 11 to C:\Program Files\netbeans
> The etc/netbeans.conf file has been edited to set JDK home:
> *netbeans_jdkhome="C:\Program Files\Java\jdk-11.0.4"*
> When trying to run bin/netbeans64.exe:
>  # *First time:* The loading window appears, loads for a bit, and then the 
> whole program disappears.
>  # *Second time:* Loading window does not appear. An empty Java application 
> appears.
>  # If I go to Task Manager and manually end the Netbeans process, I can get 
> back to step 1.
> Executing netbeans64.exe from PowerShell outputs error messages to the 
> console. They can be found in consoleOutput.txt attachment.
> The results from executing *bin/netbeans64.exe --trace C:\netbeans.log* can 
> be found in netbeans.log attachment.
> For reference, this is the tutorial I followed:
> [https://www.youtube.com/watch?v=cxh-hVty09g]
>  
>  



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