Сервер Minecraft на Rust.
Плагины Paper работают без переписывания.

public final class HelloPlugin extends JavaPlugin {
  @Override
  public void onEnable() {
    getServer().getPluginManager().registerEvents(new Listener() {
      @EventHandler(priority = EventPriority.NORMAL)
      public void onJoin(PlayerJoinEvent event) {
        event.getPlayer().sendMessage("chunkwake is awake");
      }
    }, this);
  }
}

class HelloPlugin : JavaPlugin() {
  override fun onEnable() {
    server.pluginManager.registerEvents(object : Listener() {
      @EventHandler(priority = EventPriority.NORMAL)
      fun onJoin(event: PlayerJoinEvent) {
        event.player.sendMessage("chunkwake is awake")
      }
    }, this)
  }
}