StringUtils api 中文英文对照

古城微笑少年丶 2022-08-13 17:39 206阅读 0赞

**由于本人水平有限，翻译可能不太准确，先把部分原稿发布，还没有进行校对，请大家提宝贵意见，**

**近期发布api**

**org.apache.commons.lang****   
Class StringUtils**

[java.lang.Object][]

**org.apache.commons.lang.StringUtils**

--------------------

public class **StringUtils**

extends [Object][java.lang.Object]

Operations on [String][] that are null safe. 字符串是null安全的，不会抛出NullPointerException，都做了相应的处理。

*  **IsEmpty/IsBlank** - checks if a String contains text
 *  **IsEmpty/IsBlank** – 检查字符串是否有内容。
 *  **Trim/Strip** - removes leading and trailing whitespace
 *  **Trim/Strip** – 删除字符串开始和结尾的空白符。
 *  **Equals** - compares two strings null-safe
 *  **Equals** – 比较两个字符串null安全。
 *  **IndexOf/LastIndexOf/Contains** - null-safe index-of checks
 *  **IndexOf/LastIndexOf/Contains** – null安全的索引检查。
 *  **IndexOfAny/LastIndexOfAny/IndexOfAnyBut/LastIndexOfAnyBut** - index-of any of a set of Strings
 *  **IndexOfAny/LastIndexOfAny/IndexOfAnyBut/LastIndexOfAnyBut** – 字符串集合索引检查。
 *  **ContainsOnly/ContainsNone** - does String contains only/none of these characters
 *  **ContainsOnly/ContainsNone** – 字符在字符串中出现一次或一次也没有出现。
 *  **Substring/Left/Right/Mid** - null-safe substring extractions
 *  **Substring/Left/Right/Mid** – null安全子串的提取。
 *  **SubstringBefore/SubstringAfter/SubstringBetween** - substring extraction relative to other strings
 *  **SubstringBefore/SubstringAfter/SubstringBetween** – 子串提取依赖其它字符串。
 *  **Split/Join** - splits a String into an array of substrings and vice versa
 *  **Split/Join** – 字符串拆分为子串的字符串数组，反之亦然。
 *  **Remove/Delete** - removes part of a String
 *  **Remove/Delete** – 删除部分字符串。
 *  **Replace/Overlay** - Searches a String and replaces one String with another
 *  **Replace/Overlay** – 替换字符串的部分字符。
 *  **Chomp/Chop** - removes the last part of a String
 *  **Chomp/Chop** – 删除字符串最后的字符。
 *  **LeftPad/RightPad/Center/Repeat** - pads a String
 *  **LeftPad/RightPad/Center/Repeat** – 补字符串。
 *  **UpperCase/LowerCase/SwapCase/Capitalize/Uncapitalize** - changes the case of a String
 *  **UpperCase/LowerCase/SwapCase/Capitalize/Uncapitalize** – 改变字符串的大小写。
 *  **CountMatches** - counts the number of occurrences of one String in another
 *  **CountMatches** – 计算一个字符或字符串在另外一个字符串出现的次数。
 *  **IsAlpha/IsNumeric/IsWhitespace/IsAsciiPrintable** - checks the characters in a String
 *  **IsAlpha/IsNumeric/IsWhitespace/IsAsciiPrintable** – 判断字符是否在字符串中。
 *  **DefaultString** - protects against a null input String
 *  **DefaultString** –null安全，null转换为字符串。
 *  **Reverse/ReverseDelimited** - reverses a String
 *  **Reverse/ReverseDelimited** – 反转字符串。
 *  **Abbreviate** - abbreviates a string using ellipsis
 *  **Abbreviate** – 缩写字符串用省略符。
 *  **Difference** - compares two Strings and reports on their differences
 *  **Difference** – 比较两个字符串并且返回不同。
 *  **LevensteinDistance** - the number of changes needed to change one String into another
 *  **LevensteinDistance** – 一个字符串改变为另一个字符串需要改变的数量。

The StringUtils class defines certain words related to String handling.

StringUtils类是对字符串的处理。

* null – null 空
 * empty - a zero-length string ("") 长度为0的字符串
 * space - the space character (' ', char 32) 间隔符
 * whitespace - the characters defined by [Character.isWhitespace(char)][Character.isWhitespace_char]空格符
 * trim - the characters <= 32 as in [String.trim()][String.trim]去掉字符串两边字符<=32

**Version:**

$Id: StringUtils.java 492377 2007-01-04 01:20:30Z scolebourne $

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 <td style="background: #003366; width: 100%; height: 35.2pt; border: #f0f0f0; padding: 2.25pt;" colspan="2"> <a rel="nofollow"></a>Field Summary字段摘要 </td> 
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 <td style="background: #efefef; width: 27.48%; height: 36.05pt; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; width: 72.52%; height: 36.05pt; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#EMPTY" rel="nofollow">EMPTY</a>&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The empty String&nbsp;"".空字符串。 </td> 
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 <td style="background: #efefef; width: 27.48%; height: 35.2pt; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; width: 72.52%; height: 35.2pt; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#INDEX_NOT_FOUND" rel="nofollow">INDEX_NOT_FOUND</a>&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Represents a failed index search. 声明失败索引。 </td> 
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 <td style="background: #003366; border: #f0f0f0; padding: 2.25pt;" colspan="2"> Method Summary方法摘要 </td> 
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 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#abbreviate%28java.lang.String,%20int%29" rel="nofollow">abbreviate</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;maxWidth)&nbsp; Abbreviates a String using ellipses. 取得字符串的缩写，str:处理的字符串，maxWidth:宽度，从第一个字符开始[1,maxWidth),类似于substring(),返回一个新的字符串，它是此字符串的一个子字符串。 </td> 
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 <tr style="mso-yfti-irow: 2;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#abbreviate%28java.lang.String,%20int,%20int%29" rel="nofollow">abbreviate</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;offset, int&nbsp;maxWidth)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Abbreviates a String using ellipses. 取得字符串的缩写，str:处理的字符串，maxWidth:宽度，从第offset个字符开始[offset,axWidth),类似于substring(),返回一个新的字符串，它是此字符串的一个子字符串。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 3;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#capitalise%28java.lang.String%29" rel="nofollow">capitalise</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use the standardly named&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#capitalize%28java.lang.String%29" rel="nofollow">capitalize(String)</a>. Method will be removed in Commons Lang 3.0. 过时了.用&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#capitalize%28java.lang.String%29" rel="nofollow">capitalize(String)</a>，在Commons Lang 3.0已经没有此方法了。 </td> 
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 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#capitaliseAllWords%28java.lang.String%29" rel="nofollow">capitaliseAllWords</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use the relocated&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/WordUtils.html#capitalize%28java.lang.String%29" rel="nofollow">WordUtils.capitalize(String)</a>. Method will be removed in Commons Lang 3.0. 过时了. 在Commons Lang 3.0已经没有此方法了。 </td> 
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 <tr style="mso-yfti-irow: 5;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#capitalize%28java.lang.String%29" rel="nofollow">capitalize</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Capitalizes a String changing the first letter to title case as per&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Character.html#toTitleCase%28char%29" rel="nofollow">Character.toTitleCase(char)</a>. 将str手写字母大写，用于名称、头衔等 </td> 
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 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#center%28java.lang.String,%20int%29" rel="nofollow">center</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Centers a String in a larger String of size&nbsp;size&nbsp;using the space character (' '). 产生一个字符串返回，该字符串长度等于size，str位于新串的中心，其他位置补空格。 如果str为null，则返回null 如果size小于str的长度，则返回str本身 </td> 
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 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#center%28java.lang.String,%20int,%20char%29" rel="nofollow">center</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size, char&nbsp;padChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Centers a String in a larger String of size&nbsp;size. 产生一个字符串返回，该字符串长度等于size，str位于新串的中心，其他位置补字符padChar。 如果str为null，则返回null 如果size小于str的长度，则返回str本身 </td> 
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 <tr style="mso-yfti-irow: 8;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#center%28java.lang.String,%20int,%20java.lang.String%29" rel="nofollow">center</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;padStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Centers a String in a larger String of size&nbsp;size. 产生一个字符串返回，该字符串长度等于size，str位于新串的中心，其他位置补字符串padStr。 如果str为null，则返回null 如果size小于str的长度，则返回str本身 </td> 
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 <tr style="mso-yfti-irow: 9;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chomp%28java.lang.String%29" rel="nofollow">chomp</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes one newline from end of a String if it's there, otherwise leave it alone. &nbsp;以单个词为单位的反转 str=”I am yuanyuan !”; chomp(str)=”! yuanyuan an&nbsp; I”; </td> 
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 <tr style="mso-yfti-irow: 10;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chomp%28java.lang.String,%20java.lang.String%29" rel="nofollow">chomp</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes&nbsp;separator&nbsp;from the end of&nbsp;str&nbsp;if it's there, otherwise leave it alone. &nbsp;以单个词为单位的反转，从separator开始 str=”I am yuanyuan !”; chomp(str ,”!”)=” yuanyuan an&nbsp; I !”; </td> 
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 <tr style="mso-yfti-irow: 11;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chompLast%28java.lang.String%29" rel="nofollow">chompLast</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chomp%28java.lang.String%29" rel="nofollow">chomp(String)</a>&nbsp;instead. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 12;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chompLast%28java.lang.String,%20java.lang.String%29" rel="nofollow">chompLast</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;sep)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chomp%28java.lang.String,%20java.lang.String%29" rel="nofollow">chomp(String,String)</a>&nbsp;instead. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 13;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chop%28java.lang.String%29" rel="nofollow">chop</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Remove the last character from a String. 去掉字符串str的最后一个字符。如果字符串以"/r/n"结尾，则去掉它们。 </td> 
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 <tr style="mso-yfti-irow: 14;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chopNewline%28java.lang.String%29" rel="nofollow">chopNewline</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#chomp%28java.lang.String%29" rel="nofollow">chomp(String)</a>&nbsp;instead. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 15;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#clean%28java.lang.String%29" rel="nofollow">clean</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use the clearer named&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#trimToEmpty%28java.lang.String%29" rel="nofollow">trimToEmpty(String)</a>. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 16;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#concatenate%28java.lang.Object[]%29" rel="nofollow">concatenate</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" rel="nofollow">Object</a>[]&nbsp;array)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use the better named&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.lang.Object[]%29" rel="nofollow">join(Object[])</a>&nbsp;instead. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 17;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#contains%28java.lang.String,%20char%29" rel="nofollow">contains</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;searchChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if String contains a search character, handling&nbsp;null. 当此字符串包含指定的字符searchChar 值序列时，返回 true；处理null。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 18;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#contains%28java.lang.String,%20java.lang.String%29" rel="nofollow">contains</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if String contains a search String, handling&nbsp;null. 当此字符串包含指定的字符串searchStr 值序列时，返回 true；处理null。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 19;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#containsIgnoreCase%28java.lang.String,%20java.lang.String%29" rel="nofollow">containsIgnoreCase</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if String contains a search String irrespective of case, handling&nbsp;null. 当此字符串包含指定的字符串searchStr 值序列时，忽略大小写，返回 true；处理null。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 20;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#containsNone%28java.lang.String,%20char[]%29" rel="nofollow">containsNone</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char[]&nbsp;invalidChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks that the String does not contain certain characters. 判断是否字符串str不包含字符数组invalidChars中的字符,如果含有则返回false。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 21;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#containsNone%28java.lang.String,%20java.lang.String%29" rel="nofollow">containsNone</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;invalidChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks that the String does not contain certain characters. 判断是否字符串str不包含字符串invalidChars,如果含有则返回false。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 22;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#containsOnly%28java.lang.String,%20char[]%29" rel="nofollow">containsOnly</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char[]&nbsp;valid)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only certain characters. 判断是否字符串str包含字符数组valid中的字符,如果含有则返回true。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 23;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#containsOnly%28java.lang.String,%20java.lang.String%29" rel="nofollow">containsOnly</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;validChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only certain characters. 判断是否字符串str包含字符串invalidChars,如果含有则返回true。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 24;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#countMatches%28java.lang.String,%20java.lang.String%29" rel="nofollow">countMatches</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;sub)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Counts how many times the substring appears in the larger String. 计算字符串sub在字符串str中出现的次数。如果str为null或""，则返回0 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 25;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#defaultIfEmpty%28java.lang.String,%20java.lang.String%29" rel="nofollow">defaultIfEmpty</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;defaultStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns either the passed in String, or if the String is empty or&nbsp;null, the value of&nbsp;defaultStr. 如果str不是空或者null，返回str，否则返回defaultStr。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 26;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#defaultString%28java.lang.String%29" rel="nofollow">defaultString</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns either the passed in String, or if the String is&nbsp;null, an empty String (""). 如果str不是空返回str，否则返回""。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 27;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#defaultString%28java.lang.String,%20java.lang.String%29" rel="nofollow">defaultString</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;defaultStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns either the passed in String, or if the String is&nbsp;null, the value of&nbsp;defaultStr. 如果str不为空，返回str，否则返回defaultStr </td> 
 </tr> 
 <tr style="mso-yfti-irow: 28;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#deleteSpaces%28java.lang.String%29" rel="nofollow">deleteSpaces</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use the better localized&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#deleteWhitespace%28java.lang.String%29" rel="nofollow">deleteWhitespace(String)</a>. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 29;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#deleteWhitespace%28java.lang.String%29" rel="nofollow">deleteWhitespace</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deletes all whitespaces from a String as defined by&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Character.html#isWhitespace%28char%29" rel="nofollow">Character.isWhitespace(char)</a>. 删除字符串中的所有空白符 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 30;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#difference%28java.lang.String,%20java.lang.String%29" rel="nofollow">difference</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str1,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str2)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compares two Strings, and returns the portion where they differ. 比较两个字符串，返回不同的部分。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 31;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#equals%28java.lang.String,%20java.lang.String%29" rel="nofollow">equals</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str1,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str2)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compares two Strings, returning&nbsp;true&nbsp;if they are equal. 比较两个字符串是否相等。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 32;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#equalsIgnoreCase%28java.lang.String,%20java.lang.String%29" rel="nofollow">equalsIgnoreCase</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str1,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str2)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compares two Strings, returning&nbsp;true&nbsp;if they are equal ignoring the case. 比较两个字符串是否相等，区分大小写。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 33;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#escape%28java.lang.String%29" rel="nofollow">escape</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringEscapeUtils.html#escapeJava%28java.lang.String%29" rel="nofollow">StringEscapeUtils.escapeJava(String)</a>&nbsp;This method will be removed in Commons Lang 3.0 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 34;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#getChomp%28java.lang.String,%20java.lang.String%29" rel="nofollow">getChomp</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;sep)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringAfterLast%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringAfterLast(String, String)</a>&nbsp;instead (although this doesn't include the separator) Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 35;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#getLevenshteinDistance%28java.lang.String,%20java.lang.String%29" rel="nofollow">getLevenshteinDistance</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;s,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;t)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Find the Levenshtein distance between two Strings. 计算两个字符串 levenshtein 距离，在计算相似度是用到这个方法 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 36;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#getNestedString%28java.lang.String,%20java.lang.String%29" rel="nofollow">getNestedString</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;tag)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use the better named&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringBetween%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringBetween(String, String)</a>. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 37;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#getNestedString%28java.lang.String,%20java.lang.String,%20java.lang.String%29" rel="nofollow">getNestedString</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;open,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;close)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use the better named&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringBetween%28java.lang.String,%20java.lang.String,%20java.lang.String%29" rel="nofollow">substringBetween(String, String, String)</a>. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 38;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#getPrechomp%28java.lang.String,%20java.lang.String%29" rel="nofollow">getPrechomp</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;sep)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringBefore%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringBefore(String,String)</a>&nbsp;instead (although this doesn't include the separator). Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 39;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOf%28java.lang.String,%20char%29" rel="nofollow">indexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;searchChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the first index within a String, handling&nbsp;null. 返回字符searchChar在字符串str中第一次出现的位置。 如果searchChar没有在str中出现则返回-1， 如果str为null或""，则也返回-1 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 40;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOf%28java.lang.String,%20char,%20int%29" rel="nofollow">indexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;searchChar, int&nbsp;startPos)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the first index within a String from a start position, handling&nbsp;null. 返回字符searchChar从startPos开始在字符串str中第一次出现的位置。 如果从startPos开始searchChar没有在str中出现则返回-1， 如果str为null或""，则也返回-1 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 41;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOf%28java.lang.String,%20java.lang.String%29" rel="nofollow">indexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the first index within a String, handling&nbsp;null. 返回字符串searchStr在字符串str中第一次出现的位置。 如果str为null或searchStr为null则返回-1， 如果searchStr为"",且str为不为null，则返回0， 如果searchStr不在str中，则返回-1 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 42;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOf%28java.lang.String,%20java.lang.String,%20int%29" rel="nofollow">indexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchStr, int&nbsp;startPos)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the first index within a String, handling&nbsp;null. 返回字符串searchStrr从startPos开始在字符串str中第一次出现的位置。 如果从startPos开始searchStrr没有在str中出现则返回-1， 如果str为null或""，则也返回-1 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 43;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOfAny%28java.lang.String,%20char[]%29" rel="nofollow">indexOfAny</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char[]&nbsp;searchChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Search a String to find the first index of any character in the given set of characters. 找出字符数组searchChars中的字符第一次出现在字符串str中的位置。&nbsp; 如果字符数组中的字符都不在字符串中，则返回-1&nbsp; 如果字符串为null或""，则返回-1&nbsp; </td> 
 </tr> 
 <tr style="mso-yfti-irow: 44;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOfAny%28java.lang.String,%20java.lang.String%29" rel="nofollow">indexOfAny</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Search a String to find the first index of any character in the given set of characters. 找出字符串searchChars中的字符第一次出现在字符串str中的位置。&nbsp; 如果字符串searchChars中的字符都不在字符串str中，则返回-1&nbsp; 如果searchChars或str为null或为""，则返回-1&nbsp; </td> 
 </tr> 
 <tr style="mso-yfti-irow: 45;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOfAny%28java.lang.String,%20java.lang.String[]%29" rel="nofollow">indexOfAny</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[]&nbsp;searchStrs)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Find the first index of any of a set of potential substrings. 找出字符数组searchStrs中的字符串第一次出现在字符串str中的位置。&nbsp; 如果字符串数组searchStrs中的字符都不在字符串str中，则返回-1&nbsp; 如果searchStrs或str为null或为""，则返回-1&nbsp; </td> 
 </tr> 
 <tr style="mso-yfti-irow: 46;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOfAnyBut%28java.lang.String,%20char[]%29" rel="nofollow">indexOfAnyBut</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char[]&nbsp;searchChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Search a String to find the first index of any character not in the given set of characters. 找出字符串str中不在字符数组searchChars中的第一个字符的位置。&nbsp; 如果字符串中的所有字符都在字符数组中，则返回-1&nbsp; 如果字符串为null或""，则返回-1&nbsp; </td> 
 </tr> 
 <tr style="mso-yfti-irow: 47;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOfAnyBut%28java.lang.String,%20java.lang.String%29" rel="nofollow">indexOfAnyBut</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Search a String to find the first index of any character not in the given set of characters. 找出字符串str中不在字符串searchChars中的第一个字符的位置。&nbsp; 如果字符串str中的所有字符都在字符串searchChars中，则返回-1&nbsp; 如果字符串str或searchChars为null或""，则返回-1&nbsp; </td> 
 </tr> 
 <tr style="mso-yfti-irow: 48;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#indexOfDifference%28java.lang.String,%20java.lang.String%29" rel="nofollow">indexOfDifference</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str1,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str2)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compares two Strings, and returns the index at which the Strings begin to differ. 比较两个字符串，返回第一次不同的位置。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 49;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isAlpha%28java.lang.String%29" rel="nofollow">isAlpha</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only unicode letters. 判断Str是否由字母组成。 </td> 
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 <tr style="mso-yfti-irow: 50;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isAlphanumeric%28java.lang.String%29" rel="nofollow">isAlphanumeric</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only unicode letters or digits. 判断Str是否由字母或数字组成。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 51;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isAlphanumericSpace%28java.lang.String%29" rel="nofollow">isAlphanumericSpace</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only unicode letters, digits or space (' '). 判断Str是否由字母、数字或空格组成。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 52;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isAlphaSpace%28java.lang.String%29" rel="nofollow">isAlphaSpace</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only unicode letters and space (' '). 判断Str是否由字母和空格组成。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 53;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isAsciiPrintable%28java.lang.String%29" rel="nofollow">isAsciiPrintable</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the string contains only ASCII printable characters. 判断str是否由ASCII字符组成。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 54;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isBlank%28java.lang.String%29" rel="nofollow">isBlank</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if a String is whitespace, empty ("") or null. 判断str是否是空格、空字符串或null。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 55;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isEmpty%28java.lang.String%29" rel="nofollow">isEmpty</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if a String is empty ("") or null. 判断str是否是空字符串或null。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 56;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isNotBlank%28java.lang.String%29" rel="nofollow">isNotBlank</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if a String is not empty (""), not null and not whitespace only. 判断str是否不为空且长度不为0且不由空白符(whitespace)构成， 等于!isBlank(String str) </td> 
 </tr> 
 <tr style="mso-yfti-irow: 57;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isNotEmpty%28java.lang.String%29" rel="nofollow">isNotEmpty</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if a String is not empty ("") and not null. 判断某字符串是否非空，等于!isEmpty(String str) </td> 
 </tr> 
 <tr style="mso-yfti-irow: 58;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isNumeric%28java.lang.String%29" rel="nofollow">isNumeric</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only unicode digits. 判断字符串str是否有数字组成。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 59;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isNumericSpace%28java.lang.String%29" rel="nofollow">isNumericSpace</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only unicode digits or space (' '). 判断字符串str是否有数字或空字符组成。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 60;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;boolean </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#isWhitespace%28java.lang.String%29" rel="nofollow">isWhitespace</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Checks if the String contains only whitespace. 判断字符串str是否是空格 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 61;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.util.Collection,%20char%29" rel="nofollow">join</a>(<a title="class or interface in java.util" href="http://java.sun.com/j2se/1.3/docs/api/java/util/Collection.html" rel="nofollow">Collection</a>&nbsp;collection, char&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided&nbsp;Collection&nbsp;into a single String containing the provided elements. 把collection中的元素通过分隔符separator连接成一个字符串返回。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 62;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.util.Collection,%20java.lang.String%29" rel="nofollow">join</a>(<a title="class or interface in java.util" href="http://java.sun.com/j2se/1.3/docs/api/java/util/Collection.html" rel="nofollow">Collection</a>&nbsp;collection,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided&nbsp;Collection&nbsp;into a single String containing the provided elements. 把collection中的元素通过分隔字符串separator连接成一个字符串返回。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 63;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.util.Iterator,%20char%29" rel="nofollow">join</a>(<a title="class or interface in java.util" href="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html" rel="nofollow">Iterator</a>&nbsp;iterator, char&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided&nbsp;Iterator&nbsp;into a single String containing the provided elements. 把iterator中的元素通过分隔字符separator连接成一个字符串返回。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 64;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.util.Iterator,%20java.lang.String%29" rel="nofollow">join</a>(<a title="class or interface in java.util" href="http://java.sun.com/j2se/1.3/docs/api/java/util/Iterator.html" rel="nofollow">Iterator</a>&nbsp;iterator,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided&nbsp;Iterator&nbsp;into a single String containing the provided elements. 把iterator中的元素通过分隔字符串separator连接成一个字符串返回。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 65;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.lang.Object[]%29" rel="nofollow">join</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" rel="nofollow">Object</a>[]&nbsp;array)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided array into a single String containing the provided list of elements. 把数组array中的元素连接成一个字符串返回 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 66;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.lang.Object[],%20char%29" rel="nofollow">join</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" rel="nofollow">Object</a>[]&nbsp;array, char&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided array into a single String containing the provided list of elements. 把数组array中的元素通过分隔符separator连接成一个字符串返回。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 67;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.lang.Object[],%20char,%20int,%20int%29" rel="nofollow">join</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" rel="nofollow">Object</a>[]&nbsp;array, char&nbsp;separator, int&nbsp;startIndex, int&nbsp;endIndex)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided array into a single String containing the provided list of elements. 把数组array中的元素通过分隔符separator连接成一个字符串返回，连接的开始位置为startIndex，结束位置为endIndex。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 68;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.lang.Object[],%20java.lang.String%29" rel="nofollow">join</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" rel="nofollow">Object</a>[]&nbsp;array,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided array into a single String containing the provided list of elements. 把数组array中的元素通过分隔字符串separator连接成一个字符串返回。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 69;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#join%28java.lang.Object[],%20java.lang.String,%20int,%20int%29" rel="nofollow">join</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html" rel="nofollow">Object</a>[]&nbsp;array,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator, int&nbsp;startIndex, int&nbsp;endIndex)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Joins the elements of the provided array into a single String containing the provided list of elements. 把数组array中的元素通过分隔字符串separator连接成一个字符串返回，连接的开始位置为startIndex，结束位置为endIndex。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 70;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#lastIndexOf%28java.lang.String,%20char%29" rel="nofollow">lastIndexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;searchChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the last index within a String, handling&nbsp;null. 返回字符searchChar在字符串str中最后一次出现的位置。 如果searchChar没有在str中出现则返回-1， 如果str为null或""，则也返回-1 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 71;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#lastIndexOf%28java.lang.String,%20char,%20int%29" rel="nofollow">lastIndexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;searchChar, int&nbsp;startPos)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the last index within a String from a start position, handling&nbsp;null. 返回字符串searchStrr从startPos开始在字符串str中最后一次出现的位置。 如果从startPos开始searchStrr没有在str中出现则返回-1， 如果str为null或""，则也返回-1 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 72;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#lastIndexOf%28java.lang.String,%20java.lang.String%29" rel="nofollow">lastIndexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the last index within a String, handling&nbsp;null. 返回字符串searchStr在字符串str中最后一次出现的位置。 如果str为null或searchStr为null则返回-1， 如果searchStr为"",且str为不为null，则返回0， 如果searchStr不在str中，则返回-1 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 73;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#lastIndexOf%28java.lang.String,%20java.lang.String,%20int%29" rel="nofollow">lastIndexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchStr, int&nbsp;startPos)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the first index within a String, handling&nbsp;null. 返回字符串searchStrr从startPos开始在字符串str中最后一次出现的位置。 如果从startPos开始searchStrr没有在str中出现则返回-1， 如果str为null或""，则也返回-1 </td> 
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 <tr style="mso-yfti-irow: 74;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#lastIndexOfAny%28java.lang.String,%20java.lang.String[]%29" rel="nofollow">lastIndexOfAny</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[]&nbsp;searchStrs)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Find the latest index of any of a set of potential substrings. 找出字符数组searchStrs中的字符串最后一次出现在字符串str中的位置。&nbsp; 如果字符串数组searchStrs中的字符都不在字符串str中，则返回-1&nbsp; 如果searchStrs或str为null或为""，则返回-1&nbsp; </td> 
 </tr> 
 <tr style="mso-yfti-irow: 75;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#left%28java.lang.String,%20int%29" rel="nofollow">left</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;len)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the leftmost&nbsp;len&nbsp;characters of a String. 得到字符串str从左边数len长度的子串。 如果str为null或为""，则返回它本身 如果len小于0，则返回"" </td> 
 </tr> 
 <tr style="mso-yfti-irow: 76;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#leftPad%28java.lang.String,%20int%29" rel="nofollow">leftPad</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Left pad a String with spaces (' '). 如果字符串长度小于size，则在左边补空格使其长度等于size，然后返回 如果字符串长度大于等于size，则返回它本身 如果str为null，则返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 77;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#leftPad%28java.lang.String,%20int,%20char%29" rel="nofollow">leftPad</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size, char&nbsp;padChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Left pad a String with a specified character. 如果字符串长度小于size，则在左边补字符padChar使其长度等于size，然后返回 如果字符串长度大于等于size，则返回它本身 如果str为null，则返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 78;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#leftPad%28java.lang.String,%20int,%20java.lang.String%29" rel="nofollow">leftPad</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;padStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Left pad a String with a specified String. 如果字符串长度小于size，则在左边补字符串padStr使其长度等于size，然后返回 如果字符串长度大于等于size，则返回它本身 如果str为null，则返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 79;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#lowerCase%28java.lang.String%29" rel="nofollow">lowerCase</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Converts a String to lower case as per&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html#toLowerCase%28%29" rel="nofollow">String.toLowerCase()</a>. 字符串str转换为小写。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 80;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#mid%28java.lang.String,%20int,%20int%29" rel="nofollow">mid</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;pos, int&nbsp;len)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets&nbsp;len&nbsp;characters from the middle of a String. 得到字符串str从pos开始len长度的子串。 如果str为null或为""，则返回它本身 如果len小于0或pos大于srt的长度，则返回"" 如果pos小于0，则pos设为0 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 81;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;int </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#ordinalIndexOf%28java.lang.String,%20java.lang.String,%20int%29" rel="nofollow">ordinalIndexOf</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchStr, int&nbsp;ordinal)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Finds the n-th index within a String, handling&nbsp;null. 返回字符串searchStr在字符串str中第ordinal次出现的位置。 如果str=null或searchStr=null或ordinal&lt;=0则返回-1 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 82;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#overlay%28java.lang.String,%20java.lang.String,%20int,%20int%29" rel="nofollow">overlay</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;overlay, int&nbsp;start, int&nbsp;end)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Overlays part of a String with another String. 用字符串overlay覆盖字符串str从start到end之间的串。 如果str为null，则返回null 如果start或end小于0，则设为0 如果start大于end，则两者交换 如果start或end大于str的长度，则认为等于str的长度 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 83;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#overlayString%28java.lang.String,%20java.lang.String,%20int,%20int%29" rel="nofollow">overlayString</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;text,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;overlay, int&nbsp;start, int&nbsp;end)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use better named&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#overlay%28java.lang.String,%20java.lang.String,%20int,%20int%29" rel="nofollow">overlay(String, String, int, int)</a>&nbsp;instead. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 84;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#prechomp%28java.lang.String,%20java.lang.String%29" rel="nofollow">prechomp</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;sep)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringAfter%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringAfter(String,String)</a>&nbsp;instead. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 85;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#remove%28java.lang.String,%20char%29" rel="nofollow">remove</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;remove)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes all occurances of a character from within the source string. 去掉字符串str中所有包含字符remove的部分，然后返回 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 86;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#remove%28java.lang.String,%20java.lang.String%29" rel="nofollow">remove</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;remove)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes all occurances of a substring from within the source string. 去掉字符串str中所有包含字符串remove的部分，然后返回 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 87;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#removeEnd%28java.lang.String,%20java.lang.String%29" rel="nofollow">removeEnd</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;remove)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes a substring only if it is at the end of a source string, otherwise returns the source string. 如果字符串str是以字符串remove结尾，则去掉这个结尾，然后返回，否则返回原来的串。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 88;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#removeStart%28java.lang.String,%20java.lang.String%29" rel="nofollow">removeStart</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;remove)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes a substring only if it is at the begining of a source string, otherwise returns the source string. 如果字符串str是以字符串remove开始，则去掉这个开始，然后返回，否则返回原来的串。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 89;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#repeat%28java.lang.String,%20int%29" rel="nofollow">repeat</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;repeat)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Repeat a String&nbsp;repeat&nbsp;times to form a new String. 重复字符串str repeat次，组合成一个新串返回。 如果字符串str为null或""，则返回它本身 如果repeat小于0，则返回"" </td> 
 </tr> 
 <tr style="mso-yfti-irow: 90;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#replace%28java.lang.String,%20java.lang.String,%20java.lang.String%29" rel="nofollow">replace</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;text,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;repl,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;with)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Replaces all occurrences of a String within another String. 在字符串text中用字符串with代替字符串repl，替换所有。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 91;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#replace%28java.lang.String,%20java.lang.String,%20java.lang.String,%20int%29" rel="nofollow">replace</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;text,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;repl,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;with, int&nbsp;max)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Replaces a String with another String inside a larger String, for the first&nbsp;max&nbsp;values of the search String. 在字符串text中用字符串with代替字符串repl，max为最大替换次数。 如果max小于0，则替换所有。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 92;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#replaceChars%28java.lang.String,%20char,%20char%29" rel="nofollow">replaceChars</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;searchChar, char&nbsp;replaceChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Replaces all occurrences of a character in a String with another. 在字符串str中用字符replaceChar代替所有字符searchChar，如果字符串为null或""，则返回它本身。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 93;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#replaceChars%28java.lang.String,%20java.lang.String,%20java.lang.String%29" rel="nofollow">replaceChars</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;searchChars,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;replaceChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Replaces multiple characters in a String in one go. 用字符串replaceChars替换字符串str中的字符串searchChars。 replaceChars的长度应该和searchChars的长度相等， 如果replaceChars的长度大于searchChars的长度，超过长度的字符将被忽略， 如果replaceChars的长度小于searchChars的长度，超过长度的字符将被删除。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 94;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#replaceOnce%28java.lang.String,%20java.lang.String,%20java.lang.String%29" rel="nofollow">replaceOnce</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;text,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;repl,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;with)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Replaces a String with another String inside a larger String, once. 在字符串text中用字符串with代替repl，仅一次。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 95;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#reverse%28java.lang.String%29" rel="nofollow">reverse</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reverses a String as per&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/StringBuffer.html#reverse%28%29" rel="nofollow">StringBuffer.reverse()</a>. 以字符（单个词）为单位的反转。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 96;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#reverseDelimited%28java.lang.String,%20char%29" rel="nofollow">reverseDelimited</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;separatorChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reverses a String that is delimited by a specific character. 字符串str单词反向排序，以separatorChar为界限。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 97;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#reverseDelimitedString%28java.lang.String,%20java.lang.String%29" rel="nofollow">reverseDelimitedString</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separatorChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#reverseDelimited%28java.lang.String,%20char%29" rel="nofollow">reverseDelimited(String, char)</a>&nbsp;instead. This method is broken as the join doesn't know which char to use. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 98;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#right%28java.lang.String,%20int%29" rel="nofollow">right</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;len)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the rightmost&nbsp;len&nbsp;characters of a String. 得到字符串str从右边数len长度的子串。 如果str为null或为""，则返回它本身 如果len小于0，则返回"" </td> 
 </tr> 
 <tr style="mso-yfti-irow: 99;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#rightPad%28java.lang.String,%20int%29" rel="nofollow">rightPad</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Right pad a String with spaces (' '). 如果str为null，则返回null 如果字符串长度小于size，则在右边补空格使其长度等于size，然后返回 如果字符串长度大于等于size，则返回它本身 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 100;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#rightPad%28java.lang.String,%20int,%20char%29" rel="nofollow">rightPad</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size, char&nbsp;padChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Right pad a String with a specified character. 如果str为null，则返回null 如果字符串长度小于size，则在右边补字符padChar使其长度等于size，然后返回 如果字符串长度大于等于size，则返回它本身。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 101;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#rightPad%28java.lang.String,%20int,%20java.lang.String%29" rel="nofollow">rightPad</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;size,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;padStr)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Right pad a String with a specified String. 如果字符串长度小于size，则在右边补字符串padChar使其长度等于size，然后返回 如果字符串长度大于等于size，则返回它本身。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 102;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#split%28java.lang.String%29" rel="nofollow">split</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array, using whitespace as the separator. 把字符串拆分成一个字符串数组，用空白符(whitespace)作为分隔符。 如果字符串为null，返回null 如果字符串为""，返回空数组{} </td> 
 </tr> 
 <tr style="mso-yfti-irow: 103;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#split%28java.lang.String,%20char%29" rel="nofollow">split</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;separatorChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array, separator specified. 把字符串拆分成一个字符串数组，用指定的字符separatorChar作为分隔符。 如果字符串为null，返回null 如果字符串为""，返回空数组{} </td> 
 </tr> 
 <tr style="mso-yfti-irow: 104;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#split%28java.lang.String,%20java.lang.String%29" rel="nofollow">split</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separatorChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array, separators specified. 把字符串拆分成一个字符串数组，用指定的字符串separatorChars作为分隔符。 如果字符串str为null，返回null 如果字符串str为""，返回空数组{} 如果separatorChars为null，则默认为空白符 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 105;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#split%28java.lang.String,%20java.lang.String,%20int%29" rel="nofollow">split</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separatorChars, int&nbsp;max)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array with a maximum length, separators specified. 把字符串拆分成一个字符串数组，用指定的字符串separatorChars作为分隔符， 数组的最大长度为max。 如果字符串str为null，返回null 如果字符串str为""，返回空数组{} 如果separatorChars为null，则默认为空白符 如果max小于等于0，认为是没有限制 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 106;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#splitByWholeSeparator%28java.lang.String,%20java.lang.String%29" rel="nofollow">splitByWholeSeparator</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array, separator string specified. 同<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#split%28java.lang.String,%20java.lang.String%29" rel="nofollow">split</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separatorChars)，暂时没有发现区别 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 107;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#splitByWholeSeparator%28java.lang.String,%20java.lang.String,%20int%29" rel="nofollow">splitByWholeSeparator</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator, int&nbsp;max)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array, separator string specified. 同<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#split%28java.lang.String,%20java.lang.String,%20int%29" rel="nofollow">split</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separatorChars, int&nbsp;max)，暂时没有发现区别。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 108;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#splitPreserveAllTokens%28java.lang.String%29" rel="nofollow">splitPreserveAllTokens</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array, using whitespace as the separator, preserving all tokens, including empty tokens created by adjacent separators. 把字符串str拆分成一个数组，用空白符(whitespace)作为分隔符，保留所有的标识， 包括相邻分隔符产生的空的标识。它可作为StringTokenizer的一个替代。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 109;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#splitPreserveAllTokens%28java.lang.String,%20char%29" rel="nofollow">splitPreserveAllTokens</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, char&nbsp;separatorChar)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array, separator specified, preserving all tokens, including empty tokens created by adjacent separators. 把字符串str拆分成一个数组，用字符separatorChar作为分隔符，保留所有的标识， 包括相邻分隔符产生的空的标识。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 110;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#splitPreserveAllTokens%28java.lang.String,%20java.lang.String%29" rel="nofollow">splitPreserveAllTokens</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separatorChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array, separators specified, preserving all tokens, including empty tokens created by adjacent separators. 把字符串str拆分成一个数组，用字符串separatorChars作为分隔符，保留所有的标识， 包括相邻分隔符产生的空的标识。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 111;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#splitPreserveAllTokens%28java.lang.String,%20java.lang.String,%20int%29" rel="nofollow">splitPreserveAllTokens</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separatorChars, int&nbsp;max)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Splits the provided text into an array with a maximum length, separators specified, preserving all tokens, including empty tokens created by adjacent separators. 把字符串str拆分成一个数组，用字符串separatorChars作为分隔符，保留所有的标识， 包括相邻分隔符产生的空的标识。数组的最大长度为max。如果max为0或负数，则认为没有限制 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 112;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#strip%28java.lang.String%29" rel="nofollow">strip</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Strips whitespace from the start and end of a String. 去掉字符串两端的空白符(whitespace)，如果输入为null则返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 113;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#strip%28java.lang.String,%20java.lang.String%29" rel="nofollow">strip</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;stripChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Strips any of a set of characters from the start and end of a String. 去掉str两端的在stripChars中的字符。如果str为null或等于""，则返回它本身； 如果stripChars为null或""，则返回strip(String str)。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 114;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#stripAll%28java.lang.String[]%29" rel="nofollow">stripAll</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[]&nbsp;strs)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Strips whitespace from the start and end of every String in an array. 对字符串数组中的每个字符串进行strip(String str)，然后返回。 如果strs为null或strs长度为0，则返回strs本身 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 115;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#stripAll%28java.lang.String[],%20java.lang.String%29" rel="nofollow">stripAll</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[]&nbsp;strs,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;stripChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Strips any of a set of characters from the start and end of every String in an array. 对字符串数组中的每个字符串进行strip(String str, String stripChars)，然后返回。 如果strs为null或strs长度为0，则返回strs本身 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 116;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#stripEnd%28java.lang.String,%20java.lang.String%29" rel="nofollow">stripEnd</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;stripChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Strips any of a set of characters from the end of a String. 去掉str末端的在stripChars中的字符。如果str为null或等于""，则返回它本身； 如果stripChars为null或""，则返回strip(String str)。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 117;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#stripStart%28java.lang.String,%20java.lang.String%29" rel="nofollow">stripStart</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;stripChars)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Strips any of a set of characters from the start of a String. 去掉str前端的在stripChars中的字符。如果str为null或等于""，则返回它本身； 如果stripChars为null或""，则返回strip(String str)。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 118;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#stripToEmpty%28java.lang.String%29" rel="nofollow">stripToEmpty</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Strips whitespace from the start and end of a String returning an empty String if&nbsp;null&nbsp;input. 去掉字符串两端的空白符(whitespace)， 如果变为null或""，则返回"" </td> 
 </tr> 
 <tr style="mso-yfti-irow: 119;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#stripToNull%28java.lang.String%29" rel="nofollow">stripToNull</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Strips whitespace from the start and end of a String returning&nbsp;null&nbsp;if the String is empty ("") after the strip. 去掉字符串两端的空白符(whitespace)， 如果变为null或""，则返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 120;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substring%28java.lang.String,%20int%29" rel="nofollow">substring</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;start)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets a substring from the specified String avoiding exceptions. 得到字符串str的子串。 如果start小于0，位置是从后往前数的第|start|个 如果str为null或""，则返回它本身 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 121;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substring%28java.lang.String,%20int,%20int%29" rel="nofollow">substring</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str, int&nbsp;start, int&nbsp;end)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets a substring from the specified String avoiding exceptions. 得到字符串str的子串。 如果start小于0，位置是从后往前数的第|start|个， 如果end小于0，位置是从后往前数的第|end|个， 如果str为null或""，则返回它本身 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 122;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringAfter%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringAfter</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the substring after the first occurrence of a separator. 得到字符串str的在字符串separator出现后的字符串，且separator不包括在内。 如果str为null或为""，则返回它本身 如果separator为null，则返回"" </td> 
 </tr> 
 <tr style="mso-yfti-irow: 123;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringAfterLast%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringAfterLast</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the substring after the last occurrence of a separator. 得到字符串str的在字符串separator最后一次出现后的字符串，且separator不包括在内。 如果str为null或为""，则返回它本身 如果separator为null，则返回"" </td> 
 </tr> 
 <tr style="mso-yfti-irow: 124;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringBefore%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringBefore</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the substring before the first occurrence of a separator. 得到字符串str的在字符串separator出现前的字串，且separator不包括在内。 如果str为null或为""，则返回它本身 如果separator为null，则返回str本身 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 125;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringBeforeLast%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringBeforeLast</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;separator)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the substring before the last occurrence of a separator. 得到字符串str的在字符串separator最后一次出现前的字串，且separator不包括在内。 如果str为null或为""，则返回它本身 如果separator为null，则返回str本身 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 126;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringBetween%28java.lang.String,%20java.lang.String%29" rel="nofollow">substringBetween</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;tag)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the String that is nested in between two instances of the same String. 得到str中的在两个字符串tag中间的字符串，即str中的tag所夹的串。 如果str为null或tag为null，返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 127;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringBetween%28java.lang.String,%20java.lang.String,%20java.lang.String%29" rel="nofollow">substringBetween</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;open,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;close)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the String that is nested in between two Strings. 得到str中的在两个字符串open和close中间的字符串，即open和close所夹的串，只返回第一个匹配的结果。 如果str为null或open为null或close为null，返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 128;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>[] </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#substringsBetween%28java.lang.String,%20java.lang.String,%20java.lang.String%29" rel="nofollow">substringsBetween</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;open,&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;close)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Searches a String for substrings delimited by a start and end tag, returning all matching substrings in an array. 得到str中的在两个字符串open和close中间的字符串，即open和close所夹的串， 把所有符合的结果放在数组中返回。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 129;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#swapCase%28java.lang.String%29" rel="nofollow">swapCase</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Swaps the case of a String changing upper and title case to lower case, and lower case to upper case. 把字符串中的字符大写转换为小写，小写转换为大写。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 130;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#trim%28java.lang.String%29" rel="nofollow">trim</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes control characters (char &lt;= 32) from both ends of this String, handling&nbsp;null&nbsp;by returning&nbsp;null. 去掉字符串两端的控制符(control characters, char &lt;= 32) 如果输入为null则返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 131;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#trimToEmpty%28java.lang.String%29" rel="nofollow">trimToEmpty</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes control characters (char &lt;= 32) from both ends of this String returning an empty String ("") if the String is empty ("") after the trim or if it is&nbsp;null. 去掉字符串两端的控制符(control characters, char &lt;= 32) 如果变为null或""，则返回"" </td> 
 </tr> 
 <tr style="mso-yfti-irow: 132;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#trimToNull%28java.lang.String%29" rel="nofollow">trimToNull</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes control characters (char &lt;= 32) from both ends of this String returning&nbsp;null&nbsp;if the String is empty ("") after the trim or if it is&nbsp;null. 去掉字符串两端的控制符(control characters, char &lt;= 32) 如果变为null或""，则返回null </td> 
 </tr> 
 <tr style="mso-yfti-irow: 133;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#uncapitalise%28java.lang.String%29" rel="nofollow">uncapitalise</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deprecated.&nbsp;Use the standardly named&nbsp;<a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#uncapitalize%28java.lang.String%29" rel="nofollow">uncapitalize(String)</a>. Method will be removed in Commons Lang 3.0. 过时了.在Commons Lang 3.0已经没有此方法了 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 134;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#uncapitalize%28java.lang.String%29" rel="nofollow">uncapitalize</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Uncapitalizes a String changing the first letter to title case as per&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/Character.html#toLowerCase%28char%29" rel="nofollow">Character.toLowerCase(char)</a>. 第一个字符小写。 </td> 
 </tr> 
 <tr style="mso-yfti-irow: 135; mso-yfti-lastrow: yes;"> 
 <td style="background: #efefef; width: 1%; border: #f0f0f0; padding: 2.25pt;"> static&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a> </td> 
 <td style="background: #efefef; border: #f0f0f0; padding: 2.25pt;"> <a href="http://commons.apache.org/lang/api/org/apache/commons/lang/StringUtils.html#upperCase%28java.lang.String%29" rel="nofollow">upperCase</a>(<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html" rel="nofollow">String</a>&nbsp;str)&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Converts a String to upper case as per&nbsp;<a title="class or interface in java.lang" href="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html#toUpperCase%28%29" rel="nofollow">String.toUpperCase()</a>. 字符串变为大写。 </td> 
 </tr> 
 </tbody> 
</table>

[java.lang.Object]: http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html
[String]: http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html
[Character.isWhitespace_char]: http://java.sun.com/j2se/1.3/docs/api/java/lang/Character.html#isWhitespace%28char%29
[String.trim]: http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html#trim%28%29