int playerCount = Bukkit.getServer().getOnlinePlayers().size();
public class MyPlugin extends JavaPlugin implements Listener { public void onEnable() { Bukkit.getServer().getPluginManager().registerEvents(this, this); } @EventHandler public void onPlayerJoin(PlayerJoinEvent event) { // Do something when a player joins the server } }This example uses getServer() to access the plugin manager, which is used to register event listeners. The plugin instance and the listener instance (in this case, the MyPlugin class) are both passed as arguments to registerEvents(). Overall, the org.bukkit package is a powerful library for creating Minecraft server plugins in Java, and the getServer() method is just one of the many tools available for developers.