Updated on Feb 19, 2026
New Java Version Check:
Automatically detects if your JAR or .class file was compiled with an unsupported Java version (e.g., Java 22+).
If the file uses Java 25 or higher, you'll now get a clear warning dialog with instructions on how to recompile with -target 21 or -target 17 for full compatibility.
Improved File Detection & Safety:
More accurate detection of Minecraft plugins/mods
All checks are fast and cached for repeated selections
