Class StringUtils

StringUtils (Lang 2.3 API)

Class StringUtils

java.lang.Object
  org.apache.commons.lang.StringUtils

 

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public class StringUtils
extends Object

Operations on String that are
null safe.

• IsEmpty/IsBlank
  - checks if a String contains text
• Trim/Strip
  - removes leading and trailing whitespace
• Equals
  - compares two strings null-safe
• IndexOf/LastIndexOf/Contains
  - null-safe index-of checks
• IndexOfAny/LastIndexOfAny/IndexOfAnyBut/LastIndexOfAnyBut
  - index-of any of a set of Strings
• ContainsOnly/ContainsNone
  - does String contains only/none of these characters
• Substring/Left/Right/Mid
  - null-safe substring extractions
• SubstringBefore/SubstringAfter/SubstringBetween
  - substring extraction relative to other strings
• Split/Join
  - splits a String into an array of substrings and vice versa
• Remove/Delete
  - removes part of a String
• Replace/Overlay
  - Searches a String and replaces one String with another
• Chomp/Chop
  - removes the last part of a String
• LeftPad/RightPad/Center/Repeat
  - pads a String
• UpperCase/LowerCase/SwapCase/Capitalize/Uncapitalize
  - changes the case of a String
• CountMatches
  - counts the number of occurrences of one String in another
• IsAlpha/IsNumeric/IsWhitespace/IsAsciiPrintable
  - checks the characters in a String
• DefaultString
  - protects against a null input String
• Reverse/ReverseDelimited
  - reverses a String
• Abbreviate
  - abbreviates a string using ellipsis
• Difference
  - compares two Strings and reports on their differences
• LevensteinDistance
  - the number of changes needed to change one String into another

The StringUtils class defines certain words related to
String handling.