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https://issues.apache.org/jira/browse/NETBEANS-5594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17358287#comment-17358287
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Ricardo Pacheco commented on NETBEANS-5594:
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I'm having the same issues with the final 12.4 version on windows 10 running
openjdk 16.0.1 and using RELEASE 123 (any release is the same).
Actually the default app test fauls. If I disable the thes and run/debug, the
app is ot able to run properly
!netbeans_error_01.PNG!
!netbeans_error_02.PNG!
!netbeans_error_03.PNG!
[^netbeans_error.txt]
> NBP12.3 application on JDK16/mac OS: Cannot load even default layout
> --------------------------------------------------------------------
>
> Key: NETBEANS-5594
> URL: https://issues.apache.org/jira/browse/NETBEANS-5594
> Project: NetBeans
> Issue Type: Bug
> Components: apisupport - Harness
> Affects Versions: 12.3
> Reporter: Sebastian Jaenicke
> Priority: Critical
> Attachments: jdk8-messages.log, messages.log2, messages3.log,
> netbeans_error.txt, netbeans_error.txt, netbeans_error_01.PNG,
> netbeans_error_01.PNG, netbeans_error_02.PNG, netbeans_error_02.PNG,
> netbeans_error_03.PNG
>
>
> NBP application using 12.3, JDK 16, runs fine on Linux.
> On mac OS (Big Sur), I first got lots of relection-related exceptions from
> NbInstaller, e.g.:
> java.lang.reflect.InaccessibleObjectException: Unable to make protected
> java.util.Enumeration java.lang.ClassLoader.findResources(java.lang.String)
> throws java.io.IOException accessible: module java.base does not "opens
> java.lang" to unnamed module @4ccc0db7
> at
> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
> at
> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
> at java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
> at java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
> [catch] at org.netbeans.Module.findResources(Module.java:567)
> at org.netbeans.core.startup.NbInstaller.loadLayers(NbInstaller.java:605)
> at org.netbeans.core.startup.NbInstaller.loadImpl(NbInstaller.java:332)
> at org.netbeans.core.startup.NbInstaller.access$000(NbInstaller.java:77)
> at org.netbeans.core.startup.NbInstaller$1.run(NbInstaller.java:322)
> at org.openide.filesystems.FileUtil$2.run(FileUtil.java:413)
>
> so I added '-J--illegal-access=permit' to default_options in etc/mgx_gui.conf.
> Now, after completely removing the user_dir, I get
> * a popup warning: 'Cannot load even default layout, using internally
> predefined configuration.'
> * a NullPointerException related to FileObject.isValid()
> UI window itself is opened, but remains empty. I'm attaching the full
> messages.log file,
> any ideas would be greatly appreciated.
>
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