Version Numbering Converter

The library works with Minecraft versions from both numbering families: the classic scheme that runs through the 1.x releases, and the newer year-based scheme. A developer can read a version in one scheme and get its equivalent in the other, which helps when older version names have to be mapped to newer ones or the reverse.

The common API is kept separate from platform code, so a Java project can use it without a Bukkit classpath. Platform-specific runtime helpers live in their own modules and are picked through a bootstrap provider. The bootstrap class detects the runtime, and the library still exposes convenience methods that use the detected provider. Where no provider is supported, a nullable accessor returns nothing. On Velocity, the provider exposes one global backend Minecraft version, and version methods there need a system property set before use. The final consumer jar is generated from the bootstrap module.

Files are published for Fabric, Forge, NeoForge, Quilt and LiteLoader, and for the Paper, Spigot, Bukkit, Purpur, Folia, Sponge, Velocity, BungeeCord and Waterfall server platforms. Builds cover rd-132211 – 26.2 across 172 release versions, and snapshot builds are published as well. The library is used on the client or server side, and neither side is required to run it. It is released under the GNU General Public License v3.0 or later and is open source.