diff --git a/src/main/java/cn/citycraft/RealBackpacks/MainCommand.java b/src/main/java/cn/citycraft/RealBackpacks/MainCommand.java
index 929d91a..9eceacd 100644
--- a/src/main/java/cn/citycraft/RealBackpacks/MainCommand.java
+++ b/src/main/java/cn/citycraft/RealBackpacks/MainCommand.java
@@ -28,12 +28,12 @@ public class MainCommand implements CommandExecutor {
 
 	private boolean exist = false;
 
-	private String[] helps = new String[] {	"§6======     真实背包插件 By:喵♂呜     ======",
-											"§4* §a查看可购买列表     §7/rb list ",
-											"§4* §a购买背包           §7/rb buy <背包名称> ",
-											"§4* §a给玩家指定背包     §7/rb give <玩家名称> <背包名称>",
-											"§4* §a查看玩家指定背包   §7/rb view <玩家名称> <背包名称>",
-											"§4* §a数据转移至MySQL    §7/rb filetomysql" };
+	private final String[] helps = new String[] {	"§6======     真实背包插件 By:喵♂呜     ======",
+													"§4* §a查看可购买列表     §7/rb list ",
+													"§4* §a购买背包           §7/rb buy <背包名称> ",
+													"§4* §a给玩家指定背包     §7/rb give <玩家名称> <背包名称>",
+													"§4* §a查看玩家指定背包   §7/rb view <玩家名称> <背包名称>",
+													"§4* §a数据转移至MySQL    §7/rb filetomysql" };
 
 	public MainCommand(final RealBackpacks plugin) {
 		this.plugin = plugin;
@@ -108,10 +108,9 @@ public class MainCommand implements CommandExecutor {
 						p.updateInventory();
 						sender.sendMessage(ChatColor.GREEN + "你花费了 " + ChatColor.GOLD + price + ChatColor.GREEN + " 购买了背包: " + ChatColor.GOLD + backpack);
 						return true;
-					} else {
-						sender.sendMessage(ChatColor.RED + "你的背包是空的.");
-						return false;
 					}
+					sender.sendMessage(ChatColor.RED + "你的背包是空的.");
+					return false;
 				} else if (command.equalsIgnoreCase("list")) {
 					if (plugin.isUsingPerms() && !sender.hasPermission("rb.list")) {
 						sender.sendMessage(ChatColor.RED + "你没有此命令的权限!");
@@ -175,10 +174,9 @@ public class MainCommand implements CommandExecutor {
 						other.updateInventory();
 						sender.sendMessage(ChatColor.GREEN + "你把背包 " + ChatColor.GOLD + backpack + ChatColor.GREEN + " 发送给了 " + ChatColor.GOLD + other.getName());
 						return true;
-					} else {
-						sender.sendMessage(ChatColor.RED + other.getName() + "的背包已经满了");
-						return false;
 					}
+					sender.sendMessage(ChatColor.RED + other.getName() + "的背包已经满了");
+					return false;
 				} else if (command.equalsIgnoreCase("filetomysql")) {
 					if (plugin.isUsingPerms() && !sender.hasPermission("rb.filetomysql"))
 						return false;
diff --git a/src/main/java/cn/citycraft/RealBackpacks/json/JSONObject.java b/src/main/java/cn/citycraft/RealBackpacks/json/JSONObject.java
index b5dd19a..4195724 100644
--- a/src/main/java/cn/citycraft/RealBackpacks/json/JSONObject.java
+++ b/src/main/java/cn/citycraft/RealBackpacks/json/JSONObject.java
@@ -2,19 +2,19 @@ package cn.citycraft.RealBackpacks.json;
 
 /*
  * Copyright (c) 2002 JSON.org
- * 
+ *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
- * 
+ *
  * The above copyright notice and this permission notice shall be included in all
  * copies or substantial portions of the Software.
- * 
+ *
  * The Software shall be used for Good, not Evil.
- * 
+ *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
@@ -41,18 +41,8 @@ import java.util.Set;
 
 public class JSONObject {
 
-	private static final int keyPoolSize = 100;
-
-	@SuppressWarnings("rawtypes")
-	private static HashMap keyPool = new HashMap(keyPoolSize);
-
 	private static final class Null {
 
-		@Override
-		protected final Object clone() {
-			return this;
-		}
-
 		@Override
 		public boolean equals(final Object object) {
 			return object == null || object == this;
@@ -62,13 +52,23 @@ public class JSONObject {
 		public String toString() {
 			return "null";
 		}
+
+		@Override
+		protected final Object clone() {
+			return this;
+		}
 	}
 
+	private static final int keyPoolSize = 100;
+
+	@SuppressWarnings("rawtypes")
+	private static HashMap keyPool = new HashMap(keyPoolSize);
+
+	public static final Object NULL = new Null();
+
 	@SuppressWarnings("rawtypes")
 	private final Map map;
 
-	public static final Object NULL = new Null();
-
 	@SuppressWarnings("rawtypes")
 	public JSONObject() {
 		this.map = new HashMap();
@@ -204,6 +204,312 @@ public class JSONObject {
 		}
 	}
 
+	public static String doubleToString(final double d) {
+		if (Double.isInfinite(d) || Double.isNaN(d)) {
+			return "null";
+		}
+
+		// Shave off trailing zeros and decimal point, if possible.
+
+		String string = Double.toString(d);
+		if (string.indexOf('.') > 0 && string.indexOf('e') < 0 && string.indexOf('E') < 0) {
+			while (string.endsWith("0")) {
+				string = string.substring(0, string.length() - 1);
+			}
+			if (string.endsWith(".")) {
+				string = string.substring(0, string.length() - 1);
+			}
+		}
+		return string;
+	}
+
+	public static String[] getNames(final JSONObject jo) {
+		final int length = jo.length();
+		if (length == 0) {
+			return null;
+		}
+		@SuppressWarnings("rawtypes")
+		final Iterator iterator = jo.keys();
+		final String[] names = new String[length];
+		int i = 0;
+		while (iterator.hasNext()) {
+			names[i] = (String) iterator.next();
+			i += 1;
+		}
+		return names;
+	}
+
+	@SuppressWarnings("rawtypes")
+	public static String[] getNames(final Object object) {
+		if (object == null) {
+			return null;
+		}
+		final Class klass = object.getClass();
+		final Field[] fields = klass.getFields();
+		final int length = fields.length;
+		if (length == 0) {
+			return null;
+		}
+		final String[] names = new String[length];
+		for (int i = 0; i < length; i += 1) {
+			names[i] = fields[i].getName();
+		}
+		return names;
+	}
+
+	public static String numberToString(final Number number) throws JSONException {
+		if (number == null) {
+			throw new JSONException("Null pointer");
+		}
+		testValidity(number);
+
+		// Shave off trailing zeros and decimal point, if possible.
+
+		String string = number.toString();
+		if (string.indexOf('.') > 0 && string.indexOf('e') < 0 && string.indexOf('E') < 0) {
+			while (string.endsWith("0")) {
+				string = string.substring(0, string.length() - 1);
+			}
+			if (string.endsWith(".")) {
+				string = string.substring(0, string.length() - 1);
+			}
+		}
+		return string;
+	}
+
+	public static String quote(final String string) {
+		final StringWriter sw = new StringWriter();
+		synchronized (sw.getBuffer()) {
+			try {
+				return quote(string, sw).toString();
+			} catch (final IOException ignored) {
+				// will never happen - we are writing to a string writer
+				return "";
+			}
+		}
+	}
+
+	public static Writer quote(final String string, final Writer w) throws IOException {
+		if (string == null || string.length() == 0) {
+			w.write("\"\"");
+			return w;
+		}
+
+		char b;
+		char c = 0;
+		String hhhh;
+		int i;
+		final int len = string.length();
+
+		w.write('"');
+		for (i = 0; i < len; i += 1) {
+			b = c;
+			c = string.charAt(i);
+			switch (c) {
+			case '\\':
+			case '"':
+				w.write('\\');
+				w.write(c);
+				break;
+			case '/':
+				if (b == '<') {
+					w.write('\\');
+				}
+				w.write(c);
+				break;
+			case '\b':
+				w.write("\\b");
+				break;
+			case '\t':
+				w.write("\\t");
+				break;
+			case '\n':
+				w.write("\\n");
+				break;
+			case '\f':
+				w.write("\\f");
+				break;
+			case '\r':
+				w.write("\\r");
+				break;
+			default:
+				if (c < ' ' || (c >= '\u0080' && c < '\u00a0') || (c >= '\u2000' && c < '\u2100')) {
+					w.write("\\u");
+					hhhh = Integer.toHexString(c);
+					w.write("0000", 0, 4 - hhhh.length());
+					w.write(hhhh);
+				} else {
+					w.write(c);
+				}
+			}
+		}
+		w.write('"');
+		return w;
+	}
+
+	public static Object stringToValue(final String string) {
+		Double d;
+		if (string.equals("")) {
+			return string;
+		}
+		if (string.equalsIgnoreCase("true")) {
+			return Boolean.TRUE;
+		}
+		if (string.equalsIgnoreCase("false")) {
+			return Boolean.FALSE;
+		}
+		if (string.equalsIgnoreCase("null")) {
+			return JSONObject.NULL;
+		}
+
+		/*
+		 * If it might be a number, try converting it.
+		 * If a number cannot be produced, then the value will just
+		 * be a string. Note that the plus and implied string
+		 * conventions are non-standard. A JSON parser may accept
+		 * non-JSON forms as long as it accepts all correct JSON forms.
+		 */
+
+		final char b = string.charAt(0);
+		if ((b >= '0' && b <= '9') || b == '.' || b == '-' || b == '+') {
+			try {
+				if (string.indexOf('.') > -1 || string.indexOf('e') > -1 || string.indexOf('E') > -1) {
+					d = Double.valueOf(string);
+					if (!d.isInfinite() && !d.isNaN()) {
+						return d;
+					}
+				} else {
+					final Long myLong = new Long(string);
+					if (myLong.longValue() == myLong.intValue()) {
+						return new Integer(myLong.intValue());
+					}
+					return myLong;
+				}
+			} catch (final Exception ignore) {
+			}
+		}
+		return string;
+	}
+
+	public static void testValidity(final Object o) throws JSONException {
+		if (o != null) {
+			if (o instanceof Double) {
+				if (((Double) o).isInfinite() || ((Double) o).isNaN()) {
+					throw new JSONException("JSON does not allow non-finite numbers.");
+				}
+			} else if (o instanceof Float) {
+				if (((Float) o).isInfinite() || ((Float) o).isNaN()) {
+					throw new JSONException("JSON does not allow non-finite numbers.");
+				}
+			}
+		}
+	}
+
+	@SuppressWarnings("rawtypes")
+	public static String valueToString(final Object value) throws JSONException {
+		if (value == null || value.equals(null)) {
+			return "null";
+		}
+		if (value instanceof JSONString) {
+			Object object;
+			try {
+				object = ((JSONString) value).toJSONString();
+			} catch (final Exception e) {
+				throw new JSONException(e);
+			}
+			if (object instanceof String) {
+				return (String) object;
+			}
+			throw new JSONException("Bad value from toJSONString: " + object);
+		}
+		if (value instanceof Number) {
+			return numberToString((Number) value);
+		}
+		if (value instanceof Boolean || value instanceof JSONObject || value instanceof JSONArray) {
+			return value.toString();
+		}
+		if (value instanceof Map) {
+			return new JSONObject((Map) value).toString();
+		}
+		if (value instanceof Collection) {
+			return new JSONArray((Collection) value).toString();
+		}
+		if (value.getClass().isArray()) {
+			return new JSONArray(value).toString();
+		}
+		return quote(value.toString());
+	}
+
+	@SuppressWarnings("rawtypes")
+	public static Object wrap(final Object object) {
+		try {
+			if (object == null) {
+				return NULL;
+			}
+			if (object instanceof JSONObject || object instanceof JSONArray || NULL.equals(object) || object instanceof JSONString || object instanceof Byte || object instanceof Character
+					|| object instanceof Short || object instanceof Integer || object instanceof Long || object instanceof Boolean || object instanceof Float || object instanceof Double
+					|| object instanceof String) {
+				return object;
+			}
+
+			if (object instanceof Collection) {
+				return new JSONArray((Collection) object);
+			}
+			if (object.getClass().isArray()) {
+				return new JSONArray(object);
+			}
+			if (object instanceof Map) {
+				return new JSONObject((Map) object);
+			}
+			final Package objectPackage = object.getClass().getPackage();
+			final String objectPackageName = objectPackage != null ? objectPackage.getName() : "";
+			if (objectPackageName.startsWith("java.") || objectPackageName.startsWith("javax.") || object.getClass().getClassLoader() == null) {
+				return object.toString();
+			}
+			return new JSONObject(object);
+		} catch (final Exception exception) {
+			return null;
+		}
+	}
+
+	static final void indent(final Writer writer, final int indent) throws IOException {
+		for (int i = 0; i < indent; i += 1) {
+			writer.write(' ');
+		}
+	}
+
+	@SuppressWarnings("rawtypes")
+	static final Writer writeValue(final Writer writer, final Object value, final int indentFactor, final int indent) throws JSONException, IOException {
+		if (value == null || value.equals(null)) {
+			writer.write("null");
+		} else if (value instanceof JSONObject) {
+			((JSONObject) value).write(writer, indentFactor, indent);
+		} else if (value instanceof JSONArray) {
+			((JSONArray) value).write(writer, indentFactor, indent);
+		} else if (value instanceof Map) {
+			new JSONObject((Map) value).write(writer, indentFactor, indent);
+		} else if (value instanceof Collection) {
+			new JSONArray((Collection) value).write(writer, indentFactor, indent);
+		} else if (value.getClass().isArray()) {
+			new JSONArray(value).write(writer, indentFactor, indent);
+		} else if (value instanceof Number) {
+			writer.write(numberToString((Number) value));
+		} else if (value instanceof Boolean) {
+			writer.write(value.toString());
+		} else if (value instanceof JSONString) {
+			Object o;
+			try {
+				o = ((JSONString) value).toJSONString();
+			} catch (final Exception e) {
+				throw new JSONException(e);
+			}
+			writer.write(o != null ? o.toString() : quote(value.toString()));
+		} else {
+			quote(value.toString(), writer);
+		}
+		return writer;
+	}
+
 	public JSONObject accumulate(final String key, final Object value) throws JSONException {
 		testValidity(value);
 		final Object object = this.opt(key);
@@ -230,25 +536,6 @@ public class JSONObject {
 		return this;
 	}
 
-	public static String doubleToString(final double d) {
-		if (Double.isInfinite(d) || Double.isNaN(d)) {
-			return "null";
-		}
-
-		// Shave off trailing zeros and decimal point, if possible.
-
-		String string = Double.toString(d);
-		if (string.indexOf('.') > 0 && string.indexOf('e') < 0 && string.indexOf('E') < 0) {
-			while (string.endsWith("0")) {
-				string = string.substring(0, string.length() - 1);
-			}
-			if (string.endsWith(".")) {
-				string = string.substring(0, string.length() - 1);
-			}
-		}
-		return string;
-	}
-
 	public Object get(final String key) throws JSONException {
 		if (key == null) {
 			throw new JSONException("Null key.");
@@ -313,40 +600,6 @@ public class JSONObject {
 		}
 	}
 
-	public static String[] getNames(final JSONObject jo) {
-		final int length = jo.length();
-		if (length == 0) {
-			return null;
-		}
-		@SuppressWarnings("rawtypes")
-		final Iterator iterator = jo.keys();
-		final String[] names = new String[length];
-		int i = 0;
-		while (iterator.hasNext()) {
-			names[i] = (String) iterator.next();
-			i += 1;
-		}
-		return names;
-	}
-
-	@SuppressWarnings("rawtypes")
-	public static String[] getNames(final Object object) {
-		if (object == null) {
-			return null;
-		}
-		final Class klass = object.getClass();
-		final Field[] fields = klass.getFields();
-		final int length = fields.length;
-		if (length == 0) {
-			return null;
-		}
-		final String[] names = new String[length];
-		for (int i = 0; i < length; i += 1) {
-			names[i] = fields[i].getName();
-		}
-		return names;
-	}
-
 	public String getString(final String key) throws JSONException {
 		final Object object = this.get(key);
 		if (object instanceof String) {
@@ -405,26 +658,6 @@ public class JSONObject {
 		return ja.length() == 0 ? null : ja;
 	}
 
-	public static String numberToString(final Number number) throws JSONException {
-		if (number == null) {
-			throw new JSONException("Null pointer");
-		}
-		testValidity(number);
-
-		// Shave off trailing zeros and decimal point, if possible.
-
-		String string = number.toString();
-		if (string.indexOf('.') > 0 && string.indexOf('e') < 0 && string.indexOf('E') < 0) {
-			while (string.endsWith("0")) {
-				string = string.substring(0, string.length() - 1);
-			}
-			if (string.endsWith(".")) {
-				string = string.substring(0, string.length() - 1);
-			}
-		}
-		return string;
-	}
-
 	public Object opt(final String key) {
 		return key == null ? null : this.map.get(key);
 	}
@@ -496,48 +729,6 @@ public class JSONObject {
 		return NULL.equals(object) ? defaultValue : object.toString();
 	}
 
-	@SuppressWarnings({ "unchecked", "rawtypes" })
-	private void populateMap(final Object bean) {
-		final Class klass = bean.getClass();
-
-		// If klass is a System class then set includeSuperClass to false.
-
-		final boolean includeSuperClass = klass.getClassLoader() != null;
-
-		final Method[] methods = includeSuperClass ? klass.getMethods() : klass.getDeclaredMethods();
-		for (int i = 0; i < methods.length; i += 1) {
-			try {
-				final Method method = methods[i];
-				if (Modifier.isPublic(method.getModifiers())) {
-					final String name = method.getName();
-					String key = "";
-					if (name.startsWith("get")) {
-						if ("getClass".equals(name) || "getDeclaringClass".equals(name)) {
-							key = "";
-						} else {
-							key = name.substring(3);
-						}
-					} else if (name.startsWith("is")) {
-						key = name.substring(2);
-					}
-					if (key.length() > 0 && Character.isUpperCase(key.charAt(0)) && method.getParameterTypes().length == 0) {
-						if (key.length() == 1) {
-							key = key.toLowerCase();
-						} else if (!Character.isUpperCase(key.charAt(1))) {
-							key = key.substring(0, 1).toLowerCase() + key.substring(1);
-						}
-
-						final Object result = method.invoke(bean, (Object[]) null);
-						if (result != null) {
-							this.map.put(key, wrap(result));
-						}
-					}
-				}
-			} catch (final Exception ignore) {
-			}
-		}
-	}
-
 	public JSONObject put(final String key, final boolean value) throws JSONException {
 		this.put(key, value ? Boolean.TRUE : Boolean.FALSE);
 		return this;
@@ -610,139 +801,10 @@ public class JSONObject {
 		return this;
 	}
 
-	public static String quote(final String string) {
-		final StringWriter sw = new StringWriter();
-		synchronized (sw.getBuffer()) {
-			try {
-				return quote(string, sw).toString();
-			} catch (final IOException ignored) {
-				// will never happen - we are writing to a string writer
-				return "";
-			}
-		}
-	}
-
-	public static Writer quote(final String string, final Writer w) throws IOException {
-		if (string == null || string.length() == 0) {
-			w.write("\"\"");
-			return w;
-		}
-
-		char b;
-		char c = 0;
-		String hhhh;
-		int i;
-		final int len = string.length();
-
-		w.write('"');
-		for (i = 0; i < len; i += 1) {
-			b = c;
-			c = string.charAt(i);
-			switch (c) {
-			case '\\':
-			case '"':
-				w.write('\\');
-				w.write(c);
-				break;
-			case '/':
-				if (b == '<') {
-					w.write('\\');
-				}
-				w.write(c);
-				break;
-			case '\b':
-				w.write("\\b");
-				break;
-			case '\t':
-				w.write("\\t");
-				break;
-			case '\n':
-				w.write("\\n");
-				break;
-			case '\f':
-				w.write("\\f");
-				break;
-			case '\r':
-				w.write("\\r");
-				break;
-			default:
-				if (c < ' ' || (c >= '\u0080' && c < '\u00a0') || (c >= '\u2000' && c < '\u2100')) {
-					w.write("\\u");
-					hhhh = Integer.toHexString(c);
-					w.write("0000", 0, 4 - hhhh.length());
-					w.write(hhhh);
-				} else {
-					w.write(c);
-				}
-			}
-		}
-		w.write('"');
-		return w;
-	}
-
 	public Object remove(final String key) {
 		return this.map.remove(key);
 	}
 
-	public static Object stringToValue(final String string) {
-		Double d;
-		if (string.equals("")) {
-			return string;
-		}
-		if (string.equalsIgnoreCase("true")) {
-			return Boolean.TRUE;
-		}
-		if (string.equalsIgnoreCase("false")) {
-			return Boolean.FALSE;
-		}
-		if (string.equalsIgnoreCase("null")) {
-			return JSONObject.NULL;
-		}
-
-		/*
-		 * If it might be a number, try converting it.
-		 * If a number cannot be produced, then the value will just
-		 * be a string. Note that the plus and implied string
-		 * conventions are non-standard. A JSON parser may accept
-		 * non-JSON forms as long as it accepts all correct JSON forms.
-		 */
-
-		final char b = string.charAt(0);
-		if ((b >= '0' && b <= '9') || b == '.' || b == '-' || b == '+') {
-			try {
-				if (string.indexOf('.') > -1 || string.indexOf('e') > -1 || string.indexOf('E') > -1) {
-					d = Double.valueOf(string);
-					if (!d.isInfinite() && !d.isNaN()) {
-						return d;
-					}
-				} else {
-					final Long myLong = new Long(string);
-					if (myLong.longValue() == myLong.intValue()) {
-						return new Integer(myLong.intValue());
-					} else {
-						return myLong;
-					}
-				}
-			} catch (final Exception ignore) {
-			}
-		}
-		return string;
-	}
-
-	public static void testValidity(final Object o) throws JSONException {
-		if (o != null) {
-			if (o instanceof Double) {
-				if (((Double) o).isInfinite() || ((Double) o).isNaN()) {
-					throw new JSONException("JSON does not allow non-finite numbers.");
-				}
-			} else if (o instanceof Float) {
-				if (((Float) o).isInfinite() || ((Float) o).isNaN()) {
-					throw new JSONException("JSON does not allow non-finite numbers.");
-				}
-			}
-		}
-	}
-
 	public JSONArray toJSONArray(final JSONArray names) throws JSONException {
 		if (names == null || names.length() == 0) {
 			return null;
@@ -770,110 +832,49 @@ public class JSONObject {
 		}
 	}
 
-	@SuppressWarnings("rawtypes")
-	public static String valueToString(final Object value) throws JSONException {
-		if (value == null || value.equals(null)) {
-			return "null";
-		}
-		if (value instanceof JSONString) {
-			Object object;
-			try {
-				object = ((JSONString) value).toJSONString();
-			} catch (final Exception e) {
-				throw new JSONException(e);
-			}
-			if (object instanceof String) {
-				return (String) object;
-			}
-			throw new JSONException("Bad value from toJSONString: " + object);
-		}
-		if (value instanceof Number) {
-			return numberToString((Number) value);
-		}
-		if (value instanceof Boolean || value instanceof JSONObject || value instanceof JSONArray) {
-			return value.toString();
-		}
-		if (value instanceof Map) {
-			return new JSONObject((Map) value).toString();
-		}
-		if (value instanceof Collection) {
-			return new JSONArray((Collection) value).toString();
-		}
-		if (value.getClass().isArray()) {
-			return new JSONArray(value).toString();
-		}
-		return quote(value.toString());
-	}
-
-	@SuppressWarnings("rawtypes")
-	public static Object wrap(final Object object) {
-		try {
-			if (object == null) {
-				return NULL;
-			}
-			if (object instanceof JSONObject || object instanceof JSONArray || NULL.equals(object) || object instanceof JSONString || object instanceof Byte || object instanceof Character || object instanceof Short || object instanceof Integer || object instanceof Long || object instanceof Boolean || object instanceof Float || object instanceof Double || object instanceof String) {
-				return object;
-			}
-
-			if (object instanceof Collection) {
-				return new JSONArray((Collection) object);
-			}
-			if (object.getClass().isArray()) {
-				return new JSONArray(object);
-			}
-			if (object instanceof Map) {
-				return new JSONObject((Map) object);
-			}
-			final Package objectPackage = object.getClass().getPackage();
-			final String objectPackageName = objectPackage != null ? objectPackage.getName() : "";
-			if (objectPackageName.startsWith("java.") || objectPackageName.startsWith("javax.") || object.getClass().getClassLoader() == null) {
-				return object.toString();
-			}
-			return new JSONObject(object);
-		} catch (final Exception exception) {
-			return null;
-		}
-	}
-
 	public Writer write(final Writer writer) throws JSONException {
 		return this.write(writer, 0, 0);
 	}
 
-	@SuppressWarnings("rawtypes")
-	static final Writer writeValue(final Writer writer, final Object value, final int indentFactor, final int indent) throws JSONException, IOException {
-		if (value == null || value.equals(null)) {
-			writer.write("null");
-		} else if (value instanceof JSONObject) {
-			((JSONObject) value).write(writer, indentFactor, indent);
-		} else if (value instanceof JSONArray) {
-			((JSONArray) value).write(writer, indentFactor, indent);
-		} else if (value instanceof Map) {
-			new JSONObject((Map) value).write(writer, indentFactor, indent);
-		} else if (value instanceof Collection) {
-			new JSONArray((Collection) value).write(writer, indentFactor, indent);
-		} else if (value.getClass().isArray()) {
-			new JSONArray(value).write(writer, indentFactor, indent);
-		} else if (value instanceof Number) {
-			writer.write(numberToString((Number) value));
-		} else if (value instanceof Boolean) {
-			writer.write(value.toString());
-		} else if (value instanceof JSONString) {
-			Object o;
-			try {
-				o = ((JSONString) value).toJSONString();
-			} catch (final Exception e) {
-				throw new JSONException(e);
-			}
-			writer.write(o != null ? o.toString() : quote(value.toString()));
-		} else {
-			quote(value.toString(), writer);
-		}
-		return writer;
-	}
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	private void populateMap(final Object bean) {
+		final Class klass = bean.getClass();
 
-	static final void indent(final Writer writer, final int indent) throws IOException {
-		for (int i = 0; i < indent; i += 1) {
-			writer.write(' ');
+		// If klass is a System class then set includeSuperClass to false.
+
+		final boolean includeSuperClass = klass.getClassLoader() != null;
+
+		final Method[] methods = includeSuperClass ? klass.getMethods() : klass.getDeclaredMethods();
+		for (int i = 0; i < methods.length; i += 1) {
+			try {
+				final Method method = methods[i];
+				if (Modifier.isPublic(method.getModifiers())) {
+					final String name = method.getName();
+					String key = "";
+					if (name.startsWith("get")) {
+						if ("getClass".equals(name) || "getDeclaringClass".equals(name)) {
+							key = "";
+						} else {
+							key = name.substring(3);
+						}
+					} else if (name.startsWith("is")) {
+						key = name.substring(2);
+					}
+					if (key.length() > 0 && Character.isUpperCase(key.charAt(0)) && method.getParameterTypes().length == 0) {
+						if (key.length() == 1) {
+							key = key.toLowerCase();
+						} else if (!Character.isUpperCase(key.charAt(1))) {
+							key = key.substring(0, 1).toLowerCase() + key.substring(1);
+						}
+
+						final Object result = method.invoke(bean, (Object[]) null);
+						if (result != null) {
+							this.map.put(key, wrap(result));
+						}
+					}
+				}
+			} catch (final Exception ignore) {
+			}
 		}
 	}
 
diff --git a/src/main/java/cn/citycraft/RealBackpacks/util/MysqlFunctions.java b/src/main/java/cn/citycraft/RealBackpacks/util/MysqlFunctions.java
index b21cb42..35f92be 100644
--- a/src/main/java/cn/citycraft/RealBackpacks/util/MysqlFunctions.java
+++ b/src/main/java/cn/citycraft/RealBackpacks/util/MysqlFunctions.java
@@ -23,9 +23,9 @@ public class MysqlFunctions {
 			@Override
 			public void run() {
 				try {
-					String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
+					final String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
 					final Connection conn = DriverManager.getConnection(url);
-					PreparedStatement statement = conn.prepareStatement("SELECT EXISTS(SELECT 1 FROM rb_data WHERE player = ? AND backpack = ? LIMIT 1);");
+					final PreparedStatement statement = conn.prepareStatement("SELECT EXISTS(SELECT 1 FROM rb_data WHERE player = ? AND backpack = ? LIMIT 1);");
 					statement.setString(1, playerName);
 					statement.setString(2, backpack);
 					final ResultSet res = statement.executeQuery();
@@ -58,7 +58,7 @@ public class MysqlFunctions {
 
 	public static boolean checkIfTableExists(final String table) {
 		try {
-			String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
+			final String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
 			final Connection conn = DriverManager.getConnection(url);
 			final Statement state = conn.createStatement();
 			final DatabaseMetaData dbm = conn.getMetaData();
@@ -67,8 +67,6 @@ public class MysqlFunctions {
 			conn.close();
 			if (tables.next())
 				return true;
-			else
-				return false;
 		} catch (final SQLException e) {
 			e.printStackTrace();
 		}
@@ -77,7 +75,7 @@ public class MysqlFunctions {
 
 	public static void createTables() {
 		try {
-			String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
+			final String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
 			final Connection conn = DriverManager.getConnection(url);
 			final PreparedStatement state = conn.prepareStatement("CREATE TABLE rb_data (player VARCHAR(16), backpack VARCHAR(20), inventory TEXT)ENGINE=InnoDB DEFAULT CHARSET=UTF8;");
 			state.executeUpdate();
@@ -93,7 +91,7 @@ public class MysqlFunctions {
 			@Override
 			public void run() {
 				try {
-					String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
+					final String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
 					final Connection conn = DriverManager.getConnection(url);
 					final PreparedStatement state = conn.prepareStatement("DELETE FROM rb_data WHERE player = ? AND backpack = ?;");
 					state.setString(1, playerName);
@@ -111,7 +109,7 @@ public class MysqlFunctions {
 	public static Inventory getBackpackInv(final String playerName, final String backpack) throws SQLException {
 		Inventory returnInv = null;
 		try {
-			String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
+			final String url = plugin.getUrl() + "?" + "user=" + plugin.getUser() + "&password=" + plugin.getPass() + "&useUnicode=true&characterEncoding=utf-8";
 			final Connection conn = DriverManager.getConnection(url);
 			final PreparedStatement state = conn.prepareStatement("SELECT inventory FROM rb_data WHERE player=? AND backpack=? LIMIT 1;");
 			state.setString(1, playerName);
@@ -120,7 +118,8 @@ public class MysqlFunctions {
 			if (res.next()) {
 				final String invString = res.getString(1);
 				if (invString != null)
-					returnInv = Serialization.toInventory(Serialization.stringToList(invString), ChatColor.translateAlternateColorCodes('&', plugin.backpackData.get(backpack).get(3)),
+					returnInv = Serialization.toInventory(Serialization.stringToList(invString),
+							ChatColor.translateAlternateColorCodes('&', plugin.backpackData.get(backpack).get(3)),
 							Integer.parseInt(plugin.backpackData.get(backpack).get(0)));
 			}
 			state.close();