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Add a section about class file version 65.0 message (#2906)

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Geoff Bourne 2024-06-15 17:36:06 -05:00 committed by GitHub
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docs/versions/java.md
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@ -80,6 +80,18 @@ The `stable` image tag combines the benefits of `latest` and [release versions](
[This section in the Minecraft wiki](https://minecraft.wiki/w/Tutorials/Update_Java#Why_update?) lists out versions of **vanilla** Minecraft versions and the corresponding Java version that is required.
### Class file version 65.0
If encountering a startup failure similar to the following examples, then ensure that the latest image has been re-pulled to use a Java 21. Alternatively, set the image tag specifically to `itzg/minecraft-server:java21`.
> Exception in thread "ServerMain" java.lang.UnsupportedClassVersionError: org/bukkit/craftbukkit/Main has been compiled by a more recent version of the Java Runtime (class file version 65.0), this version of the Java Runtime only recognizes class file versions up to 61.0
or
> Error: LinkageError occurred while loading main class net.minecraft.bundler.Main
java.lang.UnsupportedClassVersionError: net/minecraft/bundler/Main has been compiled by a more recent version of the Java Runtime (class file version 65.0), this version of the Java Runtime only recognizes class file versions up to 61.0
### Forge versions
Forge and its mods sometimes utilize non-public APIs of the JVM and as such are suspceptible to becoming broken with newer Java versions.