Reload pluginu

Cześć, dzisiaj potrzebuję pomocy, ponieważ próbuje zrobić reload pluginu, lecz nie mogę zrobić. Pomoże ktoś?

Kody pluginu:

package pl.auroracase.mc;

import org.bukkit.Bukkit;
import org.bukkit.plugin.PluginManager;
import org.bukkit.plugin.java.JavaPlugin;

public class Main extends JavaPlugin{

	private static Main i;
	
	public void onEnable(){
		i = this;
		PluginManager pm = Bukkit.getPluginManager();
		pm.registerEvents(new BlockPlaceListener(), this);
		getCommand("casegive").setExecutor(new CaseCommands());
		
	}
	
	public static Main getInstance(){
		return i;
	}
	
	
}

package pl.auroracase.mc;

import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.inventory.ItemStack;

import pl.auroracase.mc.ChatUtil;
import pl.auroracase.mc.ItemBuilder;

public class CaseCommands implements CommandExecutor{
	
	
	public boolean onCommand(CommandSender sender, Command c, String s, String[] args ){
		if(!sender.hasPermission("core.casegive")){
			ChatUtil.sendM(sender, "&6» &4Blad: &cBrak dostepu do tej komendy! (core.casegive)");
			return false;
		}
		if(args.length < 2){
			ChatUtil.sendM(sender, "&6» &cPoprawne uzycie: /casegive <gracz/all> <nick/ilosc> <ilosc/puste>");
			return false;
		}
		if(args[0].equalsIgnoreCase("all")){
			int i = Integer.parseInt(args[1]);
			if(i <= 0){
				ChatUtil.sendM(sender, "&6» &cNie mozna dac 0 skrzynek. Gracze byliby smutni :(");
				return false;
			}
			ItemStack item = new ItemBuilder(Material.CHEST, i).setName(ChatUtil.Color("&6» &9AuroraCase")).toItemStack();
			for(Player p : Bukkit.getOnlinePlayers()){
				p.getInventory().addItem(item);
			}
			ChatUtil.sendB("&6» &cAdministrator &7"+sender.getName()+" rozdal AuroraCase x"+i);
			return false;
		}
		if(args[0].equalsIgnoreCase("gracz"))
		{

			@SuppressWarnings("deprecation")
			Player p = Bukkit.getPlayer(args [1]);
			if(p != null){
				int i = 1;
				if(args.length == 3){
					i = Integer.parseInt(args[2]);
					
				}
				if(i <= 0){
					ChatUtil.sendM(sender, "&6» &cNie mozna dac 0 skrzynek. Gracze byliby smutni :(");
					return false;
					}
				ItemStack item = new ItemBuilder(Material.CHEST, i).setName(ChatUtil.Color("&6» &9AuroraCase")).toItemStack();
				p.getInventory().addItem(item);
				ChatUtil.sendM(p, "&6» &cAdministrator &7"+sender.getName()+" dal ci AuroraCase x"+i);
				ChatUtil.sendM(sender, "&6» &7Dales graczowi &7"+p.getName()+" &6AuroraCase x"+i);
			}
			else
			{
				ChatUtil.sendM(sender, "&6» &cGracz jest offline.");
				return false;
			}
		}
		else
		{
			ChatUtil.sendM(sender, "&6» &cPoprawne uzycie: /casegive <gracz/all> <nick/ilosc> <ilosc/puste>");
			return false;
			
		}
			
		return false;
		
	}

}

package pl.auroracase.mc;

import org.bukkit.Material;
import org.bukkit.block.Block;
import org.bukkit.enchantments.Enchantment;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.block.BlockPlaceEvent;
import org.bukkit.inventory.ItemStack;
import org.bukkit.inventory.meta.ItemMeta;

import pl.auroracase.mc.ChatUtil;
import pl.auroracase.mc.ItemBuilder;

public class BlockPlaceListener implements Listener{
	
	@EventHandler(priority=EventPriority.MONITOR)
	public void onPlace(BlockPlaceEvent e){
		Player p = e.getPlayer();
		Block b = e.getBlock();
		if(e.isCancelled()){
			return;
		}
		
		if(b.getType() == Material.CHEST){
			ItemMeta im = p.getItemInHand().getItemMeta();
			if(im.getDisplayName() != null){
				if(im.getDisplayName().toLowerCase().equalsIgnoreCase(ChatUtil.Color("&6» &9AuroraCase"))){
					b.setType(Material.AIR);
					ChatUtil.sendB("");
					ChatUtil.sendB("&6» &7Gracz &9"+p.getName()+"&7otworzyl &9AuroraCase.");
					ChatUtil.sendB("&6» &9Wylosowal:");
					if(Math.random() * 5 <= 1){
						ItemStack item1 = new ItemBuilder(Material.DIAMOND_SWORD).addEnchant(Enchantment.DAMAGE_ALL, 6).addEnchant(Enchantment.FIRE_ASPECT, 2).addEnchant(Enchantment.DURABILITY, 3).addLoreLine("&6» &9Wlasciciel: &c"+p.getName()+"").toItemStack();
						b.getWorld().dropItemNaturally(b.getLocation(), item1);
						ChatUtil.sendB("&c» &9Miecz 6/2/3");
				

					}
					if(Math.random() * 5 <= 1){
						ItemStack item1 = new ItemBuilder(Material.DIAMOND_PICKAXE).addEnchant(Enchantment.DIG_SPEED, 6).addEnchant(Enchantment.DURABILITY, 3).addEnchant(Enchantment.LUCK, 3).addLoreLine("&6» &9Wlasciciel: &c"+p.getName()+"").toItemStack();
						b.getWorld().dropItemNaturally(b.getLocation(), item1);
						ChatUtil.sendB("&c» &9Kilof 6/3/3");
				
					}
					if(Math.random() * 5 <= 1){
						ItemStack item1 = new ItemBuilder(Material.DIAMOND_HELMET).addEnchant(Enchantment.PROTECTION_ENVIRONMENTAL, 6).addEnchant(Enchantment.DURABILITY, 3).addLoreLine("&6» &9Wlasciciel: &c"+p.getName()+"").toItemStack();
						b.getWorld().dropItemNaturally(b.getLocation(), item1);
						ChatUtil.sendB("&c» &9Helm 6/3");
				
					}
					if(Math.random() * 5 <= 1){
						ItemStack item1 = new ItemBuilder(Material.DIAMOND_CHESTPLATE).addEnchant(Enchantment.PROTECTION_ENVIRONMENTAL, 6).addEnchant(Enchantment.DURABILITY, 3).addLoreLine("&6» &9Wlasciciel: &c"+p.getName()+"").toItemStack();
						b.getWorld().dropItemNaturally(b.getLocation(), item1);
						ChatUtil.sendB("&c» &9Klata 6/3");
				
					}
					if(Math.random() * 5 <= 1){
						ItemStack item1 = new ItemBuilder(Material.DIAMOND_LEGGINGS).addEnchant(Enchantment.PROTECTION_ENVIRONMENTAL, 6).addEnchant(Enchantment.DURABILITY, 3).addLoreLine("&6» &9Wlasciciel: &c"+p.getName()+"").toItemStack();
						b.getWorld().dropItemNaturally(b.getLocation(), item1);
						ChatUtil.sendB("&c» &9Spodnie 6/3");
				
					}
					if(Math.random() * 5 <= 1){
						ItemStack item1 = new ItemBuilder(Material.DIAMOND_BOOTS).addEnchant(Enchantment.PROTECTION_ENVIRONMENTAL, 6).addEnchant(Enchantment.DURABILITY, 3).addLoreLine("&6» &9Wlasciciel: &c"+p.getName()+"").toItemStack();
						b.getWorld().dropItemNaturally(b.getLocation(), item1);
						ChatUtil.sendB("&c» &9Buty 6/3");
				
					}
				}
			}	

		}
	}
	
}