Hytale server runs on Java 25 - you must use this version for plugin development.
| Wrong Java version | Set JAVAHOME to Java 25 | | Class not found | Check Gradle compileOnly dependency | | Unsupported class version | Rebuild with Java 25 toolchain | | IntelliJ uses wrong JDK | Project Structure → SDK → Java 25 |
Java 25 features and patterns for Hytale plugin development. Covers modern Java syntax (records, sealed classes, pattern matching, virtual threads), JDK installation, and Hytale-specific Java conventions. Use when writing Java code for Hytale plugins or troubleshooting Java version issues. Source: z3nlotus/hytale-agent-skills.
Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/z3nlotus/hytale-agent-skills --skill java-25-hytale Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code, Cursor, or OpenClaw