org.apache.commons.lang.StringUtils处置字符串类
org.apache.commons.lang.StringUtils处理字符串类org.apache.commons.lang?Class StringUtilsjava.lang.O
org.apache.commons.lang.StringUtils处理字符串类
org.apache.commons.lang?
Class StringUtils
java.lang.Object
? org.apache.commons.lang.StringUtils
public class StringUtils
extends 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) 空格符 trim - the characters <= 32 as in?String.trim()去掉字符串两边字符<=32 Version:
$Id: StringUtils.java 492377 2007-01-04 01:20:30Z scolebourne $
来自http://www.cnblogs.com/QQParadise/articles/1457767.html
