WordUtils (Apache Commons Lang 3.20.0 API)
Description: declaration: package: org.apache.commons.lang3.text, class: WordUtils

# Class WordUtils

java.lang.Object
org.apache.commons.lang3.text.WordUtils

@Deprecated public class WordUtils extends Object
Deprecated.
As of 3.6, use Apache Commons Text WordUtils.
Operations on Strings that contain words.

This class tries to handle `null` input gracefully. An exception will not be thrown for a `null` input. Each method documents its behavior in more detail.

Since:
  2.0

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `WordUtils()`
  Deprecated.
  `WordUtils` instances should NOT be constructed in standard programming.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static String`
  `capitalize(String str)`
  Deprecated.
  Capitalizes all the whitespace separated words in a String.
  `static String`
  `capitalize(String str, char... delimiters)`
  Deprecated.
  Capitalizes all the delimiter separated words in a String.
  `static String`
  `capitalizeFully(String str)`
  Deprecated.
  Converts all the whitespace separated words in a String into capitalized words, that is each word is made up of a titlecase character and then a series of lowercase characters.
  `static String`
  `capitalizeFully(String str, char... delimiters)`
  Deprecated.
  Converts all the delimiter separated words in a String into capitalized words, that is each word is made up of a titlecase character and then a series of lowercase characters.
  `static boolean`
  `containsAllWords(CharSequence word, CharSequence... words)`
  Deprecated.
  Checks if the String contains all words in the given array.
  `static String`
  `initials(String str)`
  Deprecated.
  Extracts the initial characters from each word in the String.
  `static String`
  `initials(String str, char... delimiters)`
  Deprecated.
  Extracts the initial characters from each word in the String.
  `static String`
  `swapCase(String str)`
  Deprecated.
  Swaps the case of a String using a word based algorithm.
  `static String`
  `uncapitalize(String str)`
  Deprecated.
  Uncapitalizes all the whitespace separated words in a String.
  `static String`
  `uncapitalize(String str, char... delimiters)`
  Deprecated.
  Uncapitalizes all the whitespace separated words in a String.
  `static String`
  `wrap(String str, int wrapLength)`
  Deprecated.
  Wraps a single line of text, identifying words by `' '`.
  `static String`
  `wrap(String str, int wrapLength, String newLineStr, boolean wrapLongWords)`
  Deprecated.
  Wraps a single line of text, identifying words by `' '`.
  `static String`
  `wrap(String str, int wrapLength, String newLineStr, boolean wrapLongWords, String wrapOn)`
  Deprecated.
  Wraps a single line of text, identifying words by `wrapOn`.

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Constructor Details

  - ### WordUtils

    public WordUtils()
    Deprecated.
    `WordUtils` instances should NOT be constructed in standard programming. Instead, the class should be used as `WordUtils.wrap("foo bar", 20);`.

    This constructor is public to permit tools that require a JavaBean instance to operate.

- ## Method Details

  - ### capitalize

    public static String capitalize(String str)
    Deprecated.
    Capitalizes all the whitespace separated words in a String. Only the first character of each word is changed. To convert the rest of each word to lowercase at the same time, use `capitalizeFully(String)`.

    Whitespace is defined by `Character.isWhitespace(char)`. A `null` input String returns `null`. Capitalization uses the Unicode title case, normally equivalent to upper case.

        WordUtils.capitalize(null)        = null
        WordUtils.capitalize("")          = ""
        WordUtils.capitalize("i am FINE") = "I Am FINE"

    Parameters:
      `str` - the String to capitalize, may be null.
    Returns:
      capitalized String, `null` if null String input.
    See Also:
      - `uncapitalize(String)`
      - `capitalizeFully(String)`

  - ### capitalize

    public static String capitalize(String str, char... delimiters)
    Deprecated.
    Capitalizes all the delimiter separated words in a String. Only the first character of each word is changed. To convert the rest of each word to lowercase at the same time, use `capitalizeFully(String, char[])`.

    The delimiters represent a set of characters understood to separate words. The first string character and the first non-delimiter character after a delimiter will be capitalized.

    A `null` input String returns `null`. Capitalization uses the Unicode title case, normally equivalent to upper case.

        WordUtils.capitalize(null, *)            = null
        WordUtils.capitalize("", *)              = ""
        WordUtils.capitalize(*, new char[0])     = *
        WordUtils.capitalize("i am fine", null)  = "I Am Fine"
        WordUtils.capitalize("i aM.fine", {'.'}) = "I aM.Fine"

    Parameters:
      `str` - the String to capitalize, may be null.
      `delimiters` - set of characters to determine capitalization, null means whitespace.
    Returns:
      capitalized String, `null` if null String input.
    Since:
      2.1
    See Also:
      - `uncapitalize(String)`
      - `capitalizeFully(String)`

  - ### capitalizeFully

    public static String capitalizeFully(String str)
    Deprecated.
    Converts all the whitespace separated words in a String into capitalized words, that is each word is made up of a titlecase character and then a series of lowercase characters.

    Whitespace is defined by `Character.isWhitespace(char)`. A `null` input String returns `null`. Capitalization uses the Unicode title case, normally equivalent to upper case.

        WordUtils.capitalizeFully(null)        = null
        WordUtils.capitalizeFully("")          = ""
        WordUtils.capitalizeFully("i am FINE") = "I Am Fine"

    Parameters:
      `str` - the String to capitalize, may be null.
    Returns:
      capitalized String, `null` if null String input.

  - ### capitalizeFully

    public static String capitalizeFully(String str, char... delimiters)
    Deprecated.
    Converts all the delimiter separated words in a String into capitalized words, that is each word is made up of a titlecase character and then a series of lowercase characters.

    The delimiters represent a set of characters understood to separate words. The first string character and the first non-delimiter character after a delimiter will be capitalized.

    A `null` input String returns `null`. Capitalization uses the Unicode title case, normally equivalent to upper case.

        WordUtils.capitalizeFully(null, *)            = null
        WordUtils.capitalizeFully("", *)              = ""
        WordUtils.capitalizeFully(*, null)            = *
        WordUtils.capitalizeFully(*, new char[0])     = *
        WordUtils.capitalizeFully("i aM.fine", {'.'}) = "I am.Fine"

    Parameters:
      `str` - the String to capitalize, may be null.
      `delimiters` - set of characters to determine capitalization, null means whitespace.
    Returns:
      capitalized String, `null` if null String input.
    Since:
      2.1

  - ### containsAllWords

    public static boolean containsAllWords(CharSequence word, CharSequence... words)
    Deprecated.
    Checks if the String contains all words in the given array.

    A `null` String will return `false`. A `null`, zero length search array or if one element of array is null will return `false`.

        WordUtils.containsAllWords(null, *)            = false
        WordUtils.containsAllWords("", *)              = false
        WordUtils.containsAllWords(*, null)            = false
        WordUtils.containsAllWords(*, [])              = false
        WordUtils.containsAllWords("abcd", "ab", "cd") = false
        WordUtils.containsAllWords("abc def", "def", "abc") = true

    Parameters:
      `word` - The CharSequence to check, may be null.
      `words` - The array of String words to search for, may be null.
    Returns:
      `true` if all search words are found, `false` otherwise.
    Since:
      3.5

  - ### initials

    public static String initials(String str)
    Deprecated.
    Extracts the initial characters from each word in the String.

    All first characters after whitespace are returned as a new string. Their case is not changed.

    Whitespace is defined by `Character.isWhitespace(char)`. A `null` input String returns `null`.

        WordUtils.initials(null)             = null
        WordUtils.initials("")               = ""
        WordUtils.initials("Ben John Lee")   = "BJL"
        WordUtils.initials("Ben J.Lee")      = "BJ"

    Parameters:
      `str` - the String to get initials from, may be null.
    Returns:
      String of initial letters, `null` if null String input.
    Since:
      2.2
    See Also:
      - `initials(String,char[])`

  - ### initials

    public static String initials(String str, char... delimiters)
    Deprecated.
    Extracts the initial characters from each word in the String.

    All first characters after the defined delimiters are returned as a new string. Their case is not changed.

    If the delimiters array is null, then Whitespace is used. Whitespace is defined by `Character.isWhitespace(char)`. A `null` input String returns `null`. An empty delimiter array returns an empty String.

        WordUtils.initials(null, *)                = null
        WordUtils.initials("", *)                  = ""
        WordUtils.initials("Ben John Lee", null)   = "BJL"
        WordUtils.initials("Ben J.Lee", null)      = "BJ"
        WordUtils.initials("Ben J.Lee", [' ','.']) = "BJL"
        WordUtils.initials(*, new char[0])         = ""

    Parameters:
      `str` - the String to get initials from, may be null.
      `delimiters` - set of characters to determine words, null means whitespace.
    Returns:
      String of initial characters, `null` if null String input.
    Since:
      2.2
    See Also:
      - `initials(String)`

  - ### swapCase

    public static String swapCase(String str)
    Deprecated.
    Swaps the case of a String using a word based algorithm.
    - Upper case character converts to Lower case
    - Title case character converts to Lower case
    - Lower case character after Whitespace or at start converts to Title case
    - Other Lower case character converts to Upper case

    Whitespace is defined by `Character.isWhitespace(char)`. A `null` input String returns `null`.

        StringUtils.swapCase(null)                 = null
        StringUtils.swapCase("")                   = ""
        StringUtils.swapCase("The dog has a BONE") = "tHE DOG HAS A bone"

    Parameters:
      `str` - the String to swap case, may be null.
    Returns:
      A new String, `null` if null String input.

  - ### uncapitalize

    public static String uncapitalize(String str)
    Deprecated.
    Uncapitalizes all the whitespace separated words in a String. Only the first character of each word is changed.

    Whitespace is defined by `Character.isWhitespace(char)`. A `null` input String returns `null`.

        WordUtils.uncapitalize(null)        = null
        WordUtils.uncapitalize("")          = ""
        WordUtils.uncapitalize("I Am FINE") = "i am fINE"

    Parameters:
      `str` - the String to uncapitalize, may be null.
    Returns:
      uncapitalized String, `null` if null String input.
    See Also:
      - `capitalize(String)`

  - ### uncapitalize

    public static String uncapitalize(String str, char... delimiters)
    Deprecated.
    Uncapitalizes all the whitespace separated words in a String. Only the first character of each word is changed.

    The delimiters represent a set of characters understood to separate words. The first string character and the first non-delimiter character after a delimiter will be uncapitalized.

    Whitespace is defined by `Character.isWhitespace(char)`. A `null` input String returns `null`.

        WordUtils.uncapitalize(null, *)            = null
        WordUtils.uncapitalize("", *)              = ""
        WordUtils.uncapitalize(*, null)            = *
        WordUtils.uncapitalize(*, new char[0])     = *
        WordUtils.uncapitalize("I AM.FINE", {'.'}) = "i AM.fINE"

    Parameters:
      `str` - the String to uncapitalize, may be null.
      `delimiters` - set of characters to determine uncapitalization, null means whitespace.
    Returns:
      uncapitalized String, `null` if null String input.
    Since:
      2.1
    See Also:
      - `capitalize(String)`

  - ### wrap

    public static String wrap(String str, int wrapLength)
    Deprecated.
    Wraps a single line of text, identifying words by `' '`.

    New lines will be separated by the system property line separator. Very long words, such as URLs will not be wrapped.

    Leading spaces on a new line are stripped. Trailing spaces are not stripped.

    Examples
    input | wrapLength | result
    --- | --- | ---
    null | * | null
    "" | * | ""
    "Here is one line of text that is going to be wrapped after 20 columns." | 20 | "Here is one line of\ntext that is going\nto be wrapped after\n20 columns."
    "Click here to jump to the commons website - https://commons.apache.org" | 20 | "Click here to jump\nto the commons\nwebsite -\nhttps://commons.apache.org"
    "Click here, https://commons.apache.org, to jump to the commons website" | 20 | "Click here,\nhttps://commons.apache.org,\nto jump to the\ncommons website"

    (assuming that '\n' is the systems line separator)
    Parameters:
      `str` - the String to be word wrapped, may be null.
      `wrapLength` - the column to wrap the words at, less than 1 is treated as 1.
    Returns:
      a line with newlines inserted, `null` if null input.

  - ### wrap

    public static String wrap(String str, int wrapLength, String newLineStr, boolean wrapLongWords)
    Deprecated.
    Wraps a single line of text, identifying words by `' '`.

    Leading spaces on a new line are stripped. Trailing spaces are not stripped.

    Examples
    input | wrapLength | newLineString | wrapLongWords | result
    --- | --- | --- | --- | ---
    null | * | * | true/false | null
    "" | * | * | true/false | ""
    "Here is one line of text that is going to be wrapped after 20 columns." | 20 | "\n" | true/false | "Here is one line of\ntext that is going\nto be wrapped after\n20 columns."
    "Here is one line of text that is going to be wrapped after 20 columns." | 20 | "<br />" | true/false | "Here is one line of<br />text that is going<br />to be wrapped after<br />20 columns."
    "Here is one line of text that is going to be wrapped after 20 columns." | 20 | null | true/false | "Here is one line of" + systemNewLine + "text that is going" + systemNewLine + "to be wrapped after" + systemNewLine + "20 columns."
    "Click here to jump to the commons website - https://commons.apache.org" | 20 | "\n" | false | "Click here to jump\nto the commons\nwebsite -\nhttps://commons.apache.org"
    "Click here to jump to the commons website - https://commons.apache.org" | 20 | "\n" | true | "Click here to jump\nto the commons\nwebsite -\nhttps://commons.apach\ne.org"

    Parameters:
      `str` - the String to be word wrapped, may be null.
      `wrapLength` - the column to wrap the words at, less than 1 is treated as 1.
      `newLineStr` - the string to insert for a new line, `null` uses the system property line separator.
      `wrapLongWords` - true if long words (such as URLs) should be wrapped.
    Returns:
      a line with newlines inserted, `null` if null input.

  - ### wrap

    public static String wrap(String str, int wrapLength, String newLineStr, boolean wrapLongWords, String wrapOn)
    Deprecated.
    Wraps a single line of text, identifying words by `wrapOn`.

    Leading spaces on a new line are stripped. Trailing spaces are not stripped.

    Examples
    input | wrapLength | newLineString | wrapLongWords | wrapOn | result
    --- | --- | --- | --- | --- | ---
    null | * | * | true/false | * | null
    "" | * | * | true/false | * | ""
    "Here is one line of text that is going to be wrapped after 20 columns." | 20 | "\n" | true/false | " " | "Here is one line of\ntext that is going\nto be wrapped after\n20 columns."
    "Here is one line of text that is going to be wrapped after 20 columns." | 20 | "<br />" | true/false | " " | "Here is one line of<br />text that is going<br />to be wrapped after<br />20 columns."
    "Here is one line of text that is going to be wrapped after 20 columns." | 20 | null | true/false | " " | "Here is one line of" + systemNewLine + "text that is going" + systemNewLine + "to be wrapped after" + systemNewLine + "20 columns."
    "Click here to jump to the commons website - https://commons.apache.org" | 20 | "\n" | false | " " | "Click here to jump\nto the commons\nwebsite -\nhttps://commons.apache.org"
    "Click here to jump to the commons website - https://commons.apache.org" | 20 | "\n" | true | " " | "Click here to jump\nto the commons\nwebsite -\nhttps://commons.apach\ne.org"
    "flammable/inflammable" | 20 | "\n" | true | "/" | "flammable\ninflammable"

    Parameters:
      `str` - the String to be word wrapped, may be null.
      `wrapLength` - the column to wrap the words at, less than 1 is treated as 1.
      `newLineStr` - the string to insert for a new line, `null` uses the system property line separator.
      `wrapLongWords` - true if long words (such as URLs) should be wrapped.
      `wrapOn` - regex expression to be used as a breakable characters, if blank string is provided a space character will be used.
    Returns:
      a line with newlines inserted, `null` if null input.