org.apache.commons.lang
Class StringUtils
org.apache.commons.lang.StringUtils
public class StringUtils
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。
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IsEmpty/IsBlank - checks if a String contains text
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IsEmpty/IsBlank – 检查字符串是否有内容。
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Trim/Strip - removes leading and trailing whitespace
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Trim/Strip – 删除字符串开始和结尾的空白符。
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Equals - compares two strings null-safe
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Equals – 比较两个字符串null安全。
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IndexOf/LastIndexOf/Contains - null-safe index-of checks
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IndexOf/LastIndexOf/Contains – null安全的索引检查。
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IndexOfAny/LastIndexOfAny/IndexOfAnyBut/LastIndexOfAnyBut - index-of any of a set of Strings
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IndexOfAny/LastIndexOfAny/IndexOfAnyBut/LastIndexOfAnyBut – 字符串集合索引检查。
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ContainsOnly/ContainsNone - does String contains only/none of these characters
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ContainsOnly/ContainsNone – 字符在字符串中出现一次或一次也没有出现。
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Substring/Left/Right/Mid - null-safe substring extractions
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Substring/Left/Right/Mid – null安全子串的提取。
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SubstringBefore/SubstringAfter/SubstringBetween - substring extraction relative to other strings
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SubstringBefore/SubstringAfter/SubstringBetween – 子串提取依赖其它字符串。
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Split/Join - splits a String into an array of substrings and vice versa
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Split/Join – 字符串拆分为子串的字符串数组,反之亦然。
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Remove/Delete - removes part of a String
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Remove/Delete – 删除部分字符串。
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Replace/Overlay - Searches a String and replaces one String with another
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Replace/Overlay – 替换字符串的部分字符。
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Chomp/Chop - removes the last part of a String
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Chomp/Chop – 删除字符串最后的字符。
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LeftPad/RightPad/Center/Repeat - pads a String
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LeftPad/RightPad/Center/Repeat – 补字符串。
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UpperCase/LowerCase/SwapCase/Capitalize/Uncapitalize - changes the case of a String
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UpperCase/LowerCase/SwapCase/Capitalize/Uncapitalize – 改变字符串的大小写。
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CountMatches - counts the number of occurrences of one String in another
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CountMatches – 计算一个字符或字符串在另外一个字符串出现的次数。
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IsAlpha/IsNumeric/IsWhitespace/IsAsciiPrintable - checks the characters in a String
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IsAlpha/IsNumeric/IsWhitespace/IsAsciiPrintable – 判断字符是否在字符串中。
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DefaultString - protects against a null input String
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DefaultString –null安全,null转换为字符串。
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Reverse/ReverseDelimited - reverses a String
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Reverse/ReverseDelimited – 反转字符串。
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Abbreviate - abbreviates a string using ellipsis
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Abbreviate – 缩写字符串用省略符。
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Difference - compares two Strings and reports on their differences
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Difference – 比较两个字符串并且返回不同。
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LevensteinDistance - the number of changes needed to change one String into another
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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。
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null – null 空
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empty - a zero-length string ("") 长度为0的字符串
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space - the space character (' ', char 32) 间隔符
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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 $
posted @
2011-08-17 17:00
super_mario
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