diff --git a/src/cn/citycraft/RealBackpacks/RealBackpacks.java b/src/cn/citycraft/RealBackpacks/RealBackpacks.java
index 9b7a11a..83e0273 100644
--- a/src/cn/citycraft/RealBackpacks/RealBackpacks.java
+++ b/src/cn/citycraft/RealBackpacks/RealBackpacks.java
@@ -24,6 +24,7 @@ import cn.citycraft.RealBackpacks.listeners.InventoryListener;
 import cn.citycraft.RealBackpacks.listeners.PlayerListener;
 import cn.citycraft.RealBackpacks.util.MysqlFunctions;
 import cn.citycraft.RealBackpacks.util.RBUtil;
+import cn.citycraft.RealBackpacks.util.VersionChecker;
 
 public class RealBackpacks extends JavaPlugin {
 
@@ -32,11 +33,11 @@ public class RealBackpacks extends JavaPlugin {
 	public static Economy econ = null;
 	public static boolean globalGlow = true;
 
+	private static boolean average = false;
+	private static boolean add = false;
 	private boolean usingMysql = false;
 	private boolean vault = true;
 	private boolean usingPermissions = true;
-	private static boolean average = false;
-	private static boolean add = false;
 	private String user = null;
 	private String password = null;
 	private String url;
@@ -55,6 +56,8 @@ public class RealBackpacks extends JavaPlugin {
 	public List<String> adminRestrictedView = new ArrayList<String>();
 	public List<String> slowedPlayers = new ArrayList<String>();
 
+	private VersionChecker versionChecker;
+
 	// List key
 	// 0 = Size
 	// 1 = UseRecipe
@@ -76,16 +79,70 @@ public class RealBackpacks extends JavaPlugin {
 	// 17 = addGlow
 	// 18 = Unstackable
 
+	@Override
+	public FileConfiguration getConfig() {
+		if (Config.getInstance() == null) {
+			Config.load(this);
+		}
+		return Config.getInstance();
+	}
+
+	private ItemStack getConfigLore(final ItemStack item, final String backpack) {
+		final List<String> key = backpackData.get(backpack);
+		final ItemMeta meta = item.getItemMeta();
+		final ArrayList<String> lore = new ArrayList<String>();
+		lore.clear();
+		if (backpackLore.get(backpack) != null) {
+			for (final String s : backpackLore.get(backpack)) {
+				lore.add(ChatColor.translateAlternateColorCodes('&', s));
+			}
+			meta.setLore(lore);
+		}
+		meta.setDisplayName(ChatColor.translateAlternateColorCodes('&', key.get(3)));
+		item.setItemMeta(meta);
+		return item;
+	}
+
+	public String getPass() {
+		return password;
+	}
+
+	public String getUrl() {
+		return url;
+	}
+
+	public String getUser() {
+		return user;
+	}
+
+	public boolean isAdding() {
+		return add;
+	}
+
+	public boolean isAveraging() {
+		return average;
+	}
+
+	public boolean isUsingMysql() {
+		return usingMysql;
+	}
+
+	public boolean isUsingPerms() {
+		return usingPermissions;
+	}
+
+	public boolean isUsingVault() {
+		return vault;
+	}
+
 	@Override
 	public void onEnable() {
 		final String p = getServer().getClass().getPackage().getName();
 		final String version = p.substring(p.lastIndexOf('.') + 1);
-		String classname = getClass().getPackage().getName() + ".versions."
-				+ version;
+		String classname = getClass().getPackage().getName() + ".versions." + version;
 		try {
 			final Class<?> clazz = Class.forName(classname);
-			final Constructor<?> cons = clazz
-					.getDeclaredConstructor(getClass());
+			final Constructor<?> cons = clazz.getDeclaredConstructor(getClass());
 			final Object obj = cons.newInstance(this);
 			if (obj instanceof RBInterface) {
 				NMS = (RBInterface) obj;
@@ -106,30 +163,24 @@ public class RealBackpacks extends JavaPlugin {
 			setupLists();
 			setup();
 			if (isEnabled()) {
-				getServer().getPluginManager().registerEvents(
-						new PlayerListener(this), this);
-				getServer().getPluginManager().registerEvents(
-						new CraftListener(this), this);
-				getServer().getPluginManager().registerEvents(
-						new InventoryListener(this), this);
-				getServer().getPluginManager().registerEvents(
-						new EntityListener(this), this);
-				getServer().getScheduler().runTaskTimer(this,
-						new WalkSpeedRunnable(this), 20, 20);
+				getServer().getPluginManager().registerEvents(new PlayerListener(this), this);
+				getServer().getPluginManager().registerEvents(new CraftListener(this), this);
+				getServer().getPluginManager().registerEvents(new InventoryListener(this), this);
+				getServer().getPluginManager().registerEvents(new EntityListener(this), this);
+				getServer().getScheduler().runTaskTimer(this, new WalkSpeedRunnable(this), 20, 20);
 
 				getCommand("rb").setExecutor(new MainCommand(this));
 
 				getLogger().info("真实背包已加载 By: 喵♂呜.");
 			}
 		}
+		versionChecker = new VersionChecker(this);
+		versionChecker.VersionCheck(null);
 	}
 
 	@Override
-	public FileConfiguration getConfig() {
-		if (Config.getInstance() == null) {
-			Config.load(this);
-		}
-		return Config.getInstance();
+	public void reloadConfig() {
+		Config.load(this);
 	}
 
 	@Override
@@ -140,142 +191,6 @@ public class RealBackpacks extends JavaPlugin {
 		Config.save();
 	}
 
-	@Override
-	public void reloadConfig() {
-		Config.load(this);
-	}
-
-	private boolean setupEconomy() {
-		if (getServer().getPluginManager().getPlugin("Vault") == null) {
-			return false;
-		}
-		final RegisteredServiceProvider<Economy> rsp = getServer()
-				.getServicesManager().getRegistration(Economy.class);
-		if (rsp == null) {
-			return false;
-		}
-		econ = rsp.getProvider();
-		return econ != null;
-	}
-
-	public void setupLists() {
-		backpacks.clear();
-		backpackRecipe.clear();
-		backpackData.clear();
-		backpackLore.clear();
-		for (final String backpack : getConfig().getConfigurationSection(
-				"Backpacks").getKeys(false)) {
-			final List<String> list = new ArrayList<String>();
-			backpacks.add(backpack);
-			list.add(0, getConfig()
-					.getString("Backpacks." + backpack + ".Size"));
-			list.add(
-					1,
-					getConfig().getString(
-							"Backpacks." + backpack + ".UseRecipe"));
-			if (getConfig().getStringList("Backpacks." + backpack + ".Recipe") != null) {
-				backpackRecipe.put(
-						backpack,
-						getConfig().getStringList(
-								"Backpacks." + backpack + ".Recipe"));
-			} else {
-				backpackRecipe.put(backpack, null);
-			}
-			list.add(
-					2,
-					getConfig().getString(
-							"Backpacks." + backpack + ".BackpackItem.id"));
-			list.add(
-					3,
-					getConfig().getString(
-							"Backpacks." + backpack + ".BackpackItem.name"));
-			if (getConfig().getStringList(
-					"Backpacks." + backpack + ".BackpackItem.lore") != null) {
-				backpackLore
-						.put(backpack,
-								getConfig().getStringList(
-										"Backpacks." + backpack
-												+ ".BackpackItem.lore"));
-			} else {
-				backpackLore.put(backpack, null);
-			}
-			list.add(
-					4,
-					getConfig().getString(
-							"Backpacks." + backpack
-									+ ".onDeath.destroyContents"));
-			list.add(
-					5,
-					getConfig().getString(
-							"Backpacks." + backpack + ".onDeath.dropContents"));
-			list.add(
-					6,
-					getConfig().getString(
-							"Backpacks." + backpack + ".onDeath.dropBackpack"));
-			list.add(
-					7,
-					getConfig().getString(
-							"Backpacks." + backpack + ".onDeath.keepBackpack"));
-			list.add(
-					8,
-					getConfig().getString(
-							"Backpacks." + backpack
-									+ ".WalkSpeedFeature.enabled"));
-			list.add(
-					9,
-					getConfig().getString(
-							"Backpacks." + backpack
-									+ ".WalkSpeedFeature.walkingSpeed"));
-			list.add(
-					10,
-					getConfig().getString(
-							"Backpacks." + backpack
-									+ ".IncreasedHungerFeature.enabled"));
-			list.add(
-					11,
-					getConfig()
-							.getString(
-									"Backpacks."
-											+ backpack
-											+ ".IncreasedHungerFeature.extraHungerBarsToDeplete"));
-			list.add(
-					12,
-					getConfig()
-							.getString(
-									"Backpacks."
-											+ backpack
-											+ ".IncreasedHungerFeature.hungerBarsToSubtractWhenEating"));
-			list.add(
-					13,
-					getConfig().getString(
-							"Backpacks." + backpack + ".Purchasable"));
-			list.add(14,
-					getConfig().getString("Backpacks." + backpack + ".Price"));
-			list.add(15,
-					getConfig()
-							.getString("Backpacks." + backpack + ".OpenWith"));
-			list.add(
-					16,
-					getConfig().getString(
-							"Backpacks." + backpack + ".UseWhitelist"));
-			list.add(17,
-					getConfig().getString("Backpacks." + backpack + ".addGlow"));
-			list.add(
-					18,
-					getConfig().getString(
-							"Backpacks." + backpack + ".Unstackable"));
-			backpackData.put(backpack, list);
-			backpackBlacklist.put(
-					backpack,
-					getConfig().getStringList(
-							"Backpacks." + backpack + ".ItemBlacklist"));
-			backpackWhitelist.put(
-					backpack,
-					getConfig().getStringList(
-							"Backpacks." + backpack + ".ItemWhitelist"));
-		}
-	}
-
 	@SuppressWarnings("deprecation")
 	public void setup() {
 		user = getConfig().getString("Data.MySQL.username");
@@ -287,23 +202,19 @@ public class RealBackpacks extends JavaPlugin {
 		if (!getConfig().isSet("Config.MultipleBackpacksInInventory.average")) {
 			average = false;
 		} else {
-			average = getConfig().getBoolean(
-					"Config.MultipleBackpacksInInventory.average");
+			average = getConfig().getBoolean("Config.MultipleBackpacksInInventory.average");
 		}
 
 		if (!getConfig().isSet("Config.MultipleBackpacksInInventory.add")) {
 			add = false;
 		} else {
-			add = getConfig().getBoolean(
-					"Config.MultipleBackpacksInInventory.add");
+			add = getConfig().getBoolean("Config.MultipleBackpacksInInventory.add");
 		}
 
 		if (!getConfig().isSet("Data.FileSystem")) {
 			usingMysql = false;
-		} else if (getConfig().getString("Data.FileSystem").equalsIgnoreCase(
-				"mysql")
-				|| getConfig().getString("Data.FileSystem").equalsIgnoreCase(
-						"sql")) {
+		} else if (getConfig().getString("Data.FileSystem").equalsIgnoreCase("mysql")
+				|| getConfig().getString("Data.FileSystem").equalsIgnoreCase("sql")) {
 			usingMysql = true;
 			if (!MysqlFunctions.checkIfTableExists("rb_data")) {
 				MysqlFunctions.createTables();
@@ -320,21 +231,17 @@ public class RealBackpacks extends JavaPlugin {
 
 		for (final String backpack : backpacks) {
 
-			final String override = getConfig().getString(
-					"Backpacks." + backpack + ".Override");
+			final String override = getConfig().getString("Backpacks." + backpack + ".Override");
 			if (override != null) {
-				backpackOverrides.put(backpack,
-						RBUtil.getItemstackFromString(override));
+				backpackOverrides.put(backpack, RBUtil.getItemstackFromString(override));
 			} else {
 				backpackOverrides.put(backpack, null);
 			}
 
 			final List<String> key = backpackData.get(backpack);
 			final String backpackItem = key.get(2);
-			backpackItems.put(
-					backpack,
-					getConfigLore(RBUtil.getItemstackFromString(backpackItem),
-							backpack));
+			backpackItems.put(backpack,
+					getConfigLore(RBUtil.getItemstackFromString(backpackItem), backpack));
 
 			ShapedRecipe recipe = null;
 			if (key.get(1).equalsIgnoreCase("true")) {
@@ -380,15 +287,14 @@ public class RealBackpacks extends JavaPlugin {
 							continue;
 						}
 						if (itemsplit.length > 1) {
-							final Material baseblock = Material
-									.getMaterial(Integer.parseInt(itemsplit[0]));
-							final MaterialData ingredient = new MaterialData(
-									baseblock,
+							final Material baseblock = Material.getMaterial(Integer
+									.parseInt(itemsplit[0]));
+							final MaterialData ingredient = new MaterialData(baseblock,
 									(byte) Integer.parseInt(itemsplit[1]));
 							recipe.setIngredient(shapechar, ingredient);
 						} else {
-							final Material baseblock = Material
-									.getMaterial(Integer.parseInt(itemsplit[0]));
+							final Material baseblock = Material.getMaterial(Integer
+									.parseInt(itemsplit[0]));
 							recipe.setIngredient(shapechar, baseblock);
 						}
 					}
@@ -398,53 +304,78 @@ public class RealBackpacks extends JavaPlugin {
 		}
 	}
 
-	private ItemStack getConfigLore(final ItemStack item, final String backpack) {
-		final List<String> key = backpackData.get(backpack);
-		final ItemMeta meta = item.getItemMeta();
-		final ArrayList<String> lore = new ArrayList<String>();
-		lore.clear();
-		if (backpackLore.get(backpack) != null) {
-			for (final String s : backpackLore.get(backpack)) {
-				lore.add(ChatColor.translateAlternateColorCodes('&', s));
+	private boolean setupEconomy() {
+		if (getServer().getPluginManager().getPlugin("Vault") == null)
+			return false;
+		final RegisteredServiceProvider<Economy> rsp = getServer().getServicesManager()
+				.getRegistration(Economy.class);
+		if (rsp == null)
+			return false;
+		econ = rsp.getProvider();
+		return econ != null;
+	}
+
+	public void setupLists() {
+		backpacks.clear();
+		backpackRecipe.clear();
+		backpackData.clear();
+		backpackLore.clear();
+		for (final String backpack : getConfig().getConfigurationSection("Backpacks")
+				.getKeys(false)) {
+			final List<String> list = new ArrayList<String>();
+			backpacks.add(backpack);
+			list.add(0, getConfig().getString("Backpacks." + backpack + ".Size"));
+			list.add(1, getConfig().getString("Backpacks." + backpack + ".UseRecipe"));
+			if (getConfig().getStringList("Backpacks." + backpack + ".Recipe") != null) {
+				backpackRecipe.put(backpack,
+						getConfig().getStringList("Backpacks." + backpack + ".Recipe"));
+			} else {
+				backpackRecipe.put(backpack, null);
 			}
-			meta.setLore(lore);
+			list.add(2, getConfig().getString("Backpacks." + backpack + ".BackpackItem.id"));
+			list.add(3, getConfig().getString("Backpacks." + backpack + ".BackpackItem.name"));
+			if (getConfig().getStringList("Backpacks." + backpack + ".BackpackItem.lore") != null) {
+				backpackLore.put(backpack,
+						getConfig().getStringList("Backpacks." + backpack + ".BackpackItem.lore"));
+			} else {
+				backpackLore.put(backpack, null);
+			}
+			list.add(4, getConfig().getString("Backpacks." + backpack + ".onDeath.destroyContents"));
+			list.add(5, getConfig().getString("Backpacks." + backpack + ".onDeath.dropContents"));
+			list.add(6, getConfig().getString("Backpacks." + backpack + ".onDeath.dropBackpack"));
+			list.add(7, getConfig().getString("Backpacks." + backpack + ".onDeath.keepBackpack"));
+			list.add(8, getConfig()
+					.getString("Backpacks." + backpack + ".WalkSpeedFeature.enabled"));
+			list.add(
+					9,
+					getConfig().getString(
+							"Backpacks." + backpack + ".WalkSpeedFeature.walkingSpeed"));
+			list.add(
+					10,
+					getConfig().getString(
+							"Backpacks." + backpack + ".IncreasedHungerFeature.enabled"));
+			list.add(
+					11,
+					getConfig().getString(
+							"Backpacks." + backpack
+									+ ".IncreasedHungerFeature.extraHungerBarsToDeplete"));
+			list.add(
+					12,
+					getConfig().getString(
+							"Backpacks." + backpack
+									+ ".IncreasedHungerFeature.hungerBarsToSubtractWhenEating"));
+			list.add(13, getConfig().getString("Backpacks." + backpack + ".Purchasable"));
+			list.add(14, getConfig().getString("Backpacks." + backpack + ".Price"));
+			list.add(15, getConfig().getString("Backpacks." + backpack + ".OpenWith"));
+			list.add(16, getConfig().getString("Backpacks." + backpack + ".UseWhitelist"));
+			list.add(17, getConfig().getString("Backpacks." + backpack + ".addGlow"));
+			list.add(18, getConfig().getString("Backpacks." + backpack + ".Unstackable"));
+			backpackData.put(backpack, list);
+			backpackBlacklist.put(backpack,
+					getConfig().getStringList("Backpacks." + backpack + ".ItemBlacklist"));
+			backpackWhitelist.put(backpack,
+					getConfig().getStringList("Backpacks." + backpack + ".ItemWhitelist"));
 		}
-		meta.setDisplayName(ChatColor.translateAlternateColorCodes('&',
-				key.get(3)));
-		item.setItemMeta(meta);
-		return item;
-	}
-
-	public boolean isAveraging() {
-		return average;
-	}
-
-	public boolean isAdding() {
-		return add;
-	}
-
-	public boolean isUsingMysql() {
-		return usingMysql;
-	}
-
-	public boolean isUsingVault() {
-		return vault;
-	}
-
-	public boolean isUsingPerms() {
-		return usingPermissions;
-	}
-
-	public String getUser() {
-		return user;
-	}
-
-	public String getPass() {
-		return password;
-	}
-
-	public String getUrl() {
-		return url;
 	}
 
 }