bukkit NMS

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NMS, also known as Net.Minecraft.Server is the package which contains core Minecraft server code. Classes in this package were made by Mojang (not Bukkit) and are therefore mostly obfuscated and not meant to be used or altered. However, interacting with the Minecraft server code at this level allows you to modify almost every aspect of it. This is significant because there are numerous modifications that Bukkit does not support.


The Bukkit API is a wrapper or abstraction layer for NMS that allows plugin developers to interact with the server without worrying about changes made to the internal codebase.

Use of NMS code is discouraged as it breaks often between Minecraft version changes and cannot be supported by Bukkit or Spigot as they do not create, own, or maintain it.

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