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https://issues.apache.org/jira/browse/NETBEANS-3655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen Bannasch updated NETBEANS-3655:
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Summary: NB-Javac linkage error with JDK 14, can't generate class file
version 58.65535 (was: NB-Javac)
> NB-Javac linkage error with JDK 14, can't generate class file version 58.65535
> ------------------------------------------------------------------------------
>
> Key: NETBEANS-3655
> URL: https://issues.apache.org/jira/browse/NETBEANS-3655
> Project: NetBeans
> Issue Type: Bug
> Affects Versions: 11.2
> Environment: Product Version: Apache NetBeans IDE 11.2
> Java: 14-ea; OpenJDK 64-Bit Server VM 14-ea+29-1384
> Runtime: OpenJDK Runtime Environment 14-ea+29-1384
> System: Mac OS X version 10.15.2 running on x86_64; UTF-8; en_US (nb)
> User directory: /Users/stephen/Library/Application Support/NetBeans/11.2
> Cache directory: /Users/stephen/Library/Caches/NetBeans/11.2
> Reporter: Stephen Bannasch
> Priority: Major
> Labels: jdk14, nbjavac
>
> Using NB 11.2 on macos 10.15.2 and am using JEP 354: Switch Expressions so am
> compiling with JDK 14.
> {noformat}
> openjdk 14-ea 2020-03-17
> OpenJDK Runtime Environment (build 14-ea+29-1384)
> OpenJDK 64-Bit Server VM (build 14-ea+29-1384, mixed mode, sharing)
> {noformat}
>
> Am also setting these additional compiler options in the NB project:
> {noformat}
> --enable-preview --source 14 -Xlint:unchecked -Xlint:preview
> {noformat}
> Installed nb-javac today to see if I could get "Compile on save" working.
> With "Compile on save" disabled I need to manually build the project every
> time I want to test changes.
> With "Compile on save" enabled I get this error when running the project.
> {noformat}
> Error: LinkageError occurred while loading main class GraphPanel.GraphDemo
> java.lang.UnsupportedClassVersionError: GraphPanel/GraphDemo (class
> file version 57.65535) was compiled with preview features that are
> unsupported. This version of the Java Runtime only recognizes preview
> features for class file version 58.65535
> /Users/stephen/Library/Caches/NetBeans/11.2/executor-snippets/run.xml:111:
> The following error occurred while executing this line:
> /Users/stephen/Library/Caches/NetBeans/11.2/executor-snippets/run.xml:68:
> Java returned: 1
> BUILD FAILED (total time: 0 seconds)
> {noformat}
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