Java version guide for Minecraft servers¶

The correct Java version is critical for Minecraft server compatibility. This guide gives general advice, but the final choice must follow the documentation of your server software, mod loader, and plugins/mods.

General recommendations by Minecraft version¶

The following summary is a generally safe reference, especially for Paper servers. For Forge, NeoForge, or Fabric, always check the official requirements of the relevant project.

Java vendors¶

On some hosting panels you may see several Java variants such as:

• Temurin / OpenJDK
• Zulu
• GraalVM
• various compat builds

Which one should you pick?¶

The safest choice¶

• Use Temurin/OpenJDK or another common LTS build.
• Pick the major version that matches your server software.

When to use a compat build¶

• If old plugins or mods are only stable on a specific Java build.

When to be careful with GraalVM¶

• If you have not tested plugin or mod compatibility.
• If you are not sure you actually need that runtime.
• If the plugins or mods you use have never been tested on it.

How to change the Java version in the panel¶

1. Open https://panel.nexuscloud.id/.
2. Select your server.
3. Go to Startup.
4. Find Java Version or Docker Image.
5. Pick the matching Java version.
6. Restart the server.

Troubleshooting¶

Server fails to start¶

• check the error in the console
• make sure the Java version matches the Minecraft version
• check the documentation for Paper, Forge, Fabric, NeoForge, or the relevant mod/plugin

Plugin or mod error after changing Java¶

• try going back to the previous Java version
• check whether the plugin or mod actually supports the new Java version

Cheers, Team NexusCloud