Update your server's Java version for better performance and compatibility.
This guide will show you how to easily switch between different Java versions.
Different Minecraft versions require different Java versions for optimal performance. Using the right Java version can improve your server's speed, stability, and compatibility with plugins/mods.
Performance Tip: Newer Java versions often provide better performance and security features!
First, you need to navigate to your server's startup configuration where Java settings are managed.
Note: Make sure your server is stopped before making changes to startup settings for safety.
On the startup page, you'll find the "Docker Image" setting. This controls which Java version your server uses. Think of it as choosing which "engine" runs your server.
What is Docker Image? It's a pre-configured environment that includes the Java version and everything needed to run your server.
Now you'll choose the Docker image that matches the Java version you want. Each image is designed for specific Minecraft versions and use cases.
Best for: Minecraft 1.8-1.16
Use case: Older versions, legacy plugins
Status: Stable but outdated
Best for: Minecraft 1.12-1.16
Use case: Stable performance, good compatibility
Status: Reliable choice
Best for: Minecraft 1.17 transition
Use case: Bridge between old and new
Status: Intermediate option
Best for: Minecraft 1.17-1.20
Use case: Modern servers, better performance
Status: Recommended for most servers
Best for: Minecraft 1.21+
Use case: Newest features, cutting-edge performance
Status: Latest technology
Recommendation: For most modern servers (1.17+), Java 17 provides the best balance of performance and compatibility. Use Java 24 for the latest Minecraft versions.
After selecting your desired Java version from the dropdown menu, you need to save the changes and restart your server for them to take effect.
After restarting your server, you can verify that the Java version change was successful by checking the console output.
Pro Tip: If you see Java version information in the console startup logs, the change was successful!
Your server is now running on the new Java version! You should experience better performance, improved compatibility, and access to the latest features. Monitor your server for a few days to ensure everything runs smoothly.