StringUtils (Spring for Android 2.0.0.M1 API)

java.lang.Object
- org.springframework.util.StringUtils

```
public abstract class StringUtils
extends java.lang.Object
```
Miscellaneous String utility methods.
Mainly for internal use within the framework; consider Jakarta's Commons Lang for a more comprehensive suite of String utilities.
This class delivers some simple functionality that should really be provided by the core Java String and StringBuilder classes, such as the ability to replace(java.lang.String, java.lang.String, java.lang.String) all occurrences of a given substring in a target string. It also provides easy-to-use methods to convert between delimited strings, such as CSV strings, and collections and arrays.

Since:

1.0

Author:

Rod Johnson, Juergen Hoeller, Keith Donald, Rob Harrop, Rick Evans, Arjen Poutsma

Constructor Summary

Constructors
Constructor and Description

StringUtils()

Constructors
Constructor and Description
`StringUtils()`

Method Summary

Methods
Modifier and Type	Method and Description
`static java.lang.String[]`	`addStringToArray(java.lang.String[] array, java.lang.String str)` Append the given String to the given String array, returning a new array consisting of the input array contents plus the given String.
`static java.lang.String`	`applyRelativePath(java.lang.String path, java.lang.String relativePath)` Apply the given relative path to the given path, assuming standard Java folder separation (i.e.
`static java.lang.String`	`arrayToCommaDelimitedString(java.lang.Object[] arr)` Convenience method to return a String array as a CSV String.
`static java.lang.String`	`arrayToDelimitedString(java.lang.Object[] arr, java.lang.String delim)` Convenience method to return a String array as a delimited (e.g.
`static java.lang.String`	`capitalize(java.lang.String str)` Capitalize a `String`, changing the first letter to upper case as per `Character.toUpperCase(char)`.
`static java.lang.String`	`cleanPath(java.lang.String path)` Normalize the path by suppressing sequences like "path/.." and inner simple dots.
`static java.lang.String`	`collectionToCommaDelimitedString(java.util.Collection<?> coll)` Convenience method to return a Collection as a CSV String.
`static java.lang.String`	`collectionToDelimitedString(java.util.Collection<?> coll, java.lang.String delim)` Convenience method to return a Collection as a delimited (e.g.
`static java.lang.String`	`collectionToDelimitedString(java.util.Collection<?> coll, java.lang.String delim, java.lang.String prefix, java.lang.String suffix)` Convenience method to return a Collection as a delimited (e.g.
`static java.util.Set<java.lang.String>`	`commaDelimitedListToSet(java.lang.String str)` Convenience method to convert a CSV string list to a set.
`static java.lang.String[]`	`commaDelimitedListToStringArray(java.lang.String str)` Convert a CSV list into an array of Strings.
`static java.lang.String[]`	`concatenateStringArrays(java.lang.String[] array1, java.lang.String[] array2)` Concatenate the given String arrays into one, with overlapping array elements included twice.
`static boolean`	`containsWhitespace(java.lang.CharSequence str)` Check whether the given CharSequence contains any whitespace characters.
`static boolean`	`containsWhitespace(java.lang.String str)` Check whether the given String contains any whitespace characters.
`static int`	`countOccurrencesOf(java.lang.String str, java.lang.String sub)` Count the occurrences of the substring in string s.
`static java.lang.String`	`delete(java.lang.String inString, java.lang.String pattern)` Delete all occurrences of the given substring.
`static java.lang.String`	`deleteAny(java.lang.String inString, java.lang.String charsToDelete)` Delete any character in a given String.
`static java.lang.String[]`	`delimitedListToStringArray(java.lang.String str, java.lang.String delimiter)` Take a String which is a delimited list and convert it to a String array.
`static java.lang.String[]`	`delimitedListToStringArray(java.lang.String str, java.lang.String delimiter, java.lang.String charsToDelete)` Take a String which is a delimited list and convert it to a String array.
`static boolean`	`endsWithIgnoreCase(java.lang.String str, java.lang.String suffix)` Test if the given String ends with the specified suffix, ignoring upper/lower case.
`static java.lang.String`	`getFilename(java.lang.String path)` Extract the filename from the given path, e.g.
`static java.lang.String`	`getFilenameExtension(java.lang.String path)` Extract the filename extension from the given path, e.g.
`static boolean`	`hasLength(java.lang.CharSequence str)` Check that the given CharSequence is neither `null` nor of length 0.
`static boolean`	`hasLength(java.lang.String str)` Check that the given String is neither `null` nor of length 0.
`static boolean`	`hasText(java.lang.CharSequence str)` Check whether the given CharSequence has actual text.
`static boolean`	`hasText(java.lang.String str)` Check whether the given String has actual text.
`static java.lang.String[]`	`mergeStringArrays(java.lang.String[] array1, java.lang.String[] array2)` Merge the given String arrays into one, with overlapping array elements only included once.
`static java.util.Locale`	`parseLocaleString(java.lang.String localeString)` Parse the given `localeString` value into a `Locale`.
`static boolean`	`pathEquals(java.lang.String path1, java.lang.String path2)` Compare two paths after normalization of them.
`static java.lang.String`	`quote(java.lang.String str)` Quote the given String with single quotes.
`static java.lang.Object`	`quoteIfString(java.lang.Object obj)` Turn the given Object into a String with single quotes if it is a String; keeping the Object as-is else.
`static java.lang.String[]`	`removeDuplicateStrings(java.lang.String[] array)` Remove duplicate Strings from the given array.
`static java.lang.String`	`replace(java.lang.String inString, java.lang.String oldPattern, java.lang.String newPattern)` Replace all occurences of a substring within a string with another string.
`static java.lang.String[]`	`sortStringArray(java.lang.String[] array)` Turn given source String array into sorted array.
`static java.lang.String[]`	`split(java.lang.String toSplit, java.lang.String delimiter)` Split a String at the first occurrence of the delimiter.
`static java.util.Properties`	`splitArrayElementsIntoProperties(java.lang.String[] array, java.lang.String delimiter)` Take an array Strings and split each element based on the given delimiter.
`static java.util.Properties`	`splitArrayElementsIntoProperties(java.lang.String[] array, java.lang.String delimiter, java.lang.String charsToDelete)` Take an array Strings and split each element based on the given delimiter.
`static boolean`	`startsWithIgnoreCase(java.lang.String str, java.lang.String prefix)` Test if the given String starts with the specified prefix, ignoring upper/lower case.
`static java.lang.String`	`stripFilenameExtension(java.lang.String path)` Strip the filename extension from the given path, e.g.
`static boolean`	`substringMatch(java.lang.CharSequence str, int index, java.lang.CharSequence substring)` Test whether the given string matches the given substring at the given index.
`static java.lang.String[]`	`tokenizeToStringArray(java.lang.String str, java.lang.String delimiters)` Tokenize the given String into a String array via a StringTokenizer.
`static java.lang.String[]`	`tokenizeToStringArray(java.lang.String str, java.lang.String delimiters, boolean trimTokens, boolean ignoreEmptyTokens)` Tokenize the given String into a String array via a StringTokenizer.
`static java.lang.String`	`toLanguageTag(java.util.Locale locale)` Determine the RFC 3066 compliant language tag, as used for the HTTP "Accept-Language" header.
`static java.lang.String[]`	`toStringArray(java.util.Collection<java.lang.String> collection)` Copy the given Collection into a String array.
`static java.lang.String[]`	`toStringArray(java.util.Enumeration<java.lang.String> enumeration)` Copy the given Enumeration into a String array.
`static java.lang.String`	`trimAllWhitespace(java.lang.String str)` Trim all whitespace from the given String: leading, trailing, and inbetween characters.
`static java.lang.String[]`	`trimArrayElements(java.lang.String[] array)` Trim the elements of the given String array, calling `String.trim()` on each of them.
`static java.lang.String`	`trimLeadingCharacter(java.lang.String str, char leadingCharacter)` Trim all occurences of the supplied leading character from the given String.
`static java.lang.String`	`trimLeadingWhitespace(java.lang.String str)` Trim leading whitespace from the given String.
`static java.lang.String`	`trimTrailingCharacter(java.lang.String str, char trailingCharacter)` Trim all occurences of the supplied trailing character from the given String.
`static java.lang.String`	`trimTrailingWhitespace(java.lang.String str)` Trim trailing whitespace from the given String.
`static java.lang.String`	`trimWhitespace(java.lang.String str)` Trim leading and trailing whitespace from the given String.
`static java.lang.String`	`uncapitalize(java.lang.String str)` Uncapitalize a `String`, changing the first letter to lower case as per `Character.toLowerCase(char)`.
`static java.lang.String`	`unqualify(java.lang.String qualifiedName)` Unqualify a string qualified by a '.' dot character.
`static java.lang.String`	`unqualify(java.lang.String qualifiedName, char separator)` Unqualify a string qualified by a separator character.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - StringUtils
```
public StringUtils()
```
- Method Detail
  - hasLength
```
public static boolean hasLength(java.lang.CharSequence str)
```
    Check that the given CharSequence is neither null nor of length 0. Note: Will return true for a CharSequence that purely consists of whitespace.
```
 StringUtils.hasLength(null) = false
 StringUtils.hasLength("") = false
 StringUtils.hasLength(" ") = true
 StringUtils.hasLength("Hello") = true
 
```
    Parameters:
    str - the CharSequence to check (may be null)
    
    Returns:
    true if the CharSequence is not null and has length
    See Also:
    hasText(String)
  - hasLength
```
public static boolean hasLength(java.lang.String str)
```
    Check that the given String is neither null nor of length 0. Note: Will return true for a String that purely consists of whitespace.
    
    Parameters:
    str - the String to check (may be null)
    
    Returns:
    true if the String is not null and has length
    See Also:
    hasLength(CharSequence)
  - hasText
```
public static boolean hasText(java.lang.CharSequence str)
```
    Check whether the given CharSequence has actual text. More specifically, returns true if the string not null, its length is greater than 0, and it contains at least one non-whitespace character.
```
 StringUtils.hasText(null) = false
 StringUtils.hasText("") = false
 StringUtils.hasText(" ") = false
 StringUtils.hasText("12345") = true
 StringUtils.hasText(" 12345 ") = true
 
```
    Parameters:
    str - the CharSequence to check (may be null)
    
    Returns:
    true if the CharSequence is not null, its length is greater than 0, and it does not contain whitespace only
    See Also:
    Character.isWhitespace(char)
  - hasText
```
public static boolean hasText(java.lang.String str)
```
    Check whether the given String has actual text. More specifically, returns true if the string not null, its length is greater than 0, and it contains at least one non-whitespace character.
    
    Parameters:
    str - the String to check (may be null)
    
    Returns:
    true if the String is not null, its length is greater than 0, and it does not contain whitespace only
    See Also:
    hasText(CharSequence)
  - containsWhitespace
```
public static boolean containsWhitespace(java.lang.CharSequence str)
```
    Check whether the given CharSequence contains any whitespace characters.
    
    Parameters:
    str - the CharSequence to check (may be null)
    
    Returns:
    true if the CharSequence is not empty and contains at least 1 whitespace character
    See Also:
    Character.isWhitespace(char)
  - containsWhitespace
```
public static boolean containsWhitespace(java.lang.String str)
```
    Check whether the given String contains any whitespace characters.
    
    Parameters:
    str - the String to check (may be null)
    
    Returns:
    true if the String is not empty and contains at least 1 whitespace character
    See Also:
    containsWhitespace(CharSequence)
  - trimWhitespace
```
public static java.lang.String trimWhitespace(java.lang.String str)
```
    Trim leading and trailing whitespace from the given String.
    
    Parameters:
    str - the String to check
    
    Returns:
    the trimmed String
    See Also:
    Character.isWhitespace(char)
  - trimAllWhitespace
```
public static java.lang.String trimAllWhitespace(java.lang.String str)
```
    Trim all whitespace from the given String: leading, trailing, and inbetween characters.
    
    Parameters:
    str - the String to check
    
    Returns:
    the trimmed String
    See Also:
    Character.isWhitespace(char)
  - trimLeadingWhitespace
```
public static java.lang.String trimLeadingWhitespace(java.lang.String str)
```
    Trim leading whitespace from the given String.
    
    Parameters:
    str - the String to check
    
    Returns:
    the trimmed String
    See Also:
    Character.isWhitespace(char)
  - trimTrailingWhitespace
```
public static java.lang.String trimTrailingWhitespace(java.lang.String str)
```
    Trim trailing whitespace from the given String.
    
    Parameters:
    str - the String to check
    
    Returns:
    the trimmed String
    See Also:
    Character.isWhitespace(char)
  - trimLeadingCharacter
```
public static java.lang.String trimLeadingCharacter(java.lang.String str,
                                    char leadingCharacter)
```
    Trim all occurences of the supplied leading character from the given String.
    
    Parameters:
    str - the String to check
    leadingCharacter - the leading character to be trimmed
    
    Returns:
    the trimmed String
  - trimTrailingCharacter
```
public static java.lang.String trimTrailingCharacter(java.lang.String str,
                                     char trailingCharacter)
```
    Trim all occurences of the supplied trailing character from the given String.
    
    Parameters:
    str - the String to check
    trailingCharacter - the trailing character to be trimmed
    
    Returns:
    the trimmed String
  - startsWithIgnoreCase
```
public static boolean startsWithIgnoreCase(java.lang.String str,
                           java.lang.String prefix)
```
    Test if the given String starts with the specified prefix, ignoring upper/lower case.
    
    Parameters:
    str - the String to check
    prefix - the prefix to look for
    See Also:
    String.startsWith(java.lang.String, int)
  - endsWithIgnoreCase
```
public static boolean endsWithIgnoreCase(java.lang.String str,
                         java.lang.String suffix)
```
    Test if the given String ends with the specified suffix, ignoring upper/lower case.
    
    Parameters:
    str - the String to check
    suffix - the suffix to look for
    See Also:
    String.endsWith(java.lang.String)
  - substringMatch
```
public static boolean substringMatch(java.lang.CharSequence str,
                     int index,
                     java.lang.CharSequence substring)
```
    Test whether the given string matches the given substring at the given index.
    
    Parameters:
    str - the original string (or StringBuilder)
    index - the index in the original string to start matching against
    substring - the substring to match at the given index
  - countOccurrencesOf
```
public static int countOccurrencesOf(java.lang.String str,
                     java.lang.String sub)
```
    Count the occurrences of the substring in string s.
    
    Parameters:
    str - string to search in. Return 0 if this is null.
    sub - string to search for. Return 0 if this is null.
  - replace
```
public static java.lang.String replace(java.lang.String inString,
                       java.lang.String oldPattern,
                       java.lang.String newPattern)
```
    Replace all occurences of a substring within a string with another string.
    
    Parameters:
    inString - String to examine
    oldPattern - String to replace
    newPattern - String to insert
    
    Returns:
    a String with the replacements
  - delete
```
public static java.lang.String delete(java.lang.String inString,
                      java.lang.String pattern)
```
    Delete all occurrences of the given substring.
    
    Parameters:
    inString - the original String
    pattern - the pattern to delete all occurrences of
    
    Returns:
    the resulting String
  - deleteAny
```
public static java.lang.String deleteAny(java.lang.String inString,
                         java.lang.String charsToDelete)
```
    Delete any character in a given String.
    
    Parameters:
    inString - the original String
    charsToDelete - a set of characters to delete. E.g. "az\n" will delete 'a's, 'z's and new lines.
    
    Returns:
    the resulting String
  - quote
```
public static java.lang.String quote(java.lang.String str)
```
    Quote the given String with single quotes.
    
    Parameters:
    str - the input String (e.g. "myString")
    
    Returns:
    the quoted String (e.g. "'myString'"), or null if the input was null
  quoteIfString public static java.lang.Object quoteIfString(java.lang.Object obj) Turn the given Object into a String with single quotes if it is a String; keeping the Object as-is else. Parameters: obj - the input Object (e.g. "myString") Returns: the quoted String (e.g. "'myString'"), or the input object as-is if not a String unqualify public static java.lang.String unqualify(java.lang.String qualifiedName) Unqualify a string qualified by a '.' dot character. For example, "this.name.is.qualified", returns "qualified". Parameters: qualifiedName - the qualified name unqualify public static java.lang.String unqualify(java.lang.String qualifiedName, char separator) Unqualify a string qualified by a separator character. For example, "this:name:is:qualified" returns "qualified" if using a ':' separator. Parameters: qualifiedName - the qualified name separator - the separator capitalize public static java.lang.String capitalize(java.lang.String str) Capitalize a String, changing the first letter to upper case as per Character.toUpperCase(char). No other letters are changed. Parameters: str - the String to capitalize, may be null Returns: the capitalized String, null if null uncapitalize public static java.lang.String uncapitalize(java.lang.String str) Uncapitalize a String, changing the first letter to lower case as per Character.toLowerCase(char). No other letters are changed. Parameters: str - the String to uncapitalize, may be null Returns: the uncapitalized String, null if null getFilename public static java.lang.String getFilename(java.lang.String path) Extract the filename from the given path, e.g. "mypath/myfile.txt" -> "myfile.txt". Parameters: path - the file path (may be null) Returns: the extracted filename, or null if none getFilenameExtension public static java.lang.String getFilenameExtension(java.lang.String path) Extract the filename extension from the given path, e.g. "mypath/myfile.txt" -> "txt". Parameters: path - the file path (may be null) Returns: the extracted filename extension, or null if none stripFilenameExtension public static java.lang.String stripFilenameExtension(java.lang.String path) Strip the filename extension from the given path, e.g. "mypath/myfile.txt" -> "mypath/myfile". Parameters: path - the file path (may be null) Returns: the path with stripped filename extension, or null if none applyRelativePath public static java.lang.String applyRelativePath(java.lang.String path, java.lang.String relativePath) Apply the given relative path to the given path, assuming standard Java folder separation (i.e. "/" separators). Parameters: path - the path to start from (usually a full file path) relativePath - the relative path to apply (relative to the full file path above) Returns: the full file path that results from applying the relative path cleanPath public static java.lang.String cleanPath(java.lang.String path) Normalize the path by suppressing sequences like "path/.." and inner simple dots. The result is convenient for path comparison. For other uses, notice that Windows separators ("\") are replaced by simple slashes. Parameters: path - the original path Returns: the normalized path pathEquals public static boolean pathEquals(java.lang.String path1, java.lang.String path2) Compare two paths after normalization of them. Parameters: path1 - first path for comparison path2 - second path for comparison Returns: whether the two paths are equivalent after normalization parseLocaleString public static java.util.Locale parseLocaleString(java.lang.String localeString) Parse the given localeString value into a Locale. This is the inverse operation of Locale's toString. Parameters: localeString - the locale string, following Locale's toString() format ("en", "en_UK", etc); also accepts spaces as separators, as an alternative to underscores Returns: a corresponding Locale instance toLanguageTag public static java.lang.String toLanguageTag(java.util.Locale locale) Determine the RFC 3066 compliant language tag, as used for the HTTP "Accept-Language" header. Parameters: locale - the Locale to transform to a language tag Returns: the RFC 3066 compliant language tag as String addStringToArray public static java.lang.String[] addStringToArray(java.lang.String[] array, java.lang.String str) Append the given String to the given String array, returning a new array consisting of the input array contents plus the given String. Parameters: array - the array to append to (can be null) str - the String to append Returns: the new array (never null) concatenateStringArrays public static java.lang.String[] concatenateStringArrays(java.lang.String[] array1, java.lang.String[] array2) Concatenate the given String arrays into one, with overlapping array elements included twice. The order of elements in the original arrays is preserved. Parameters: array1 - the first array (can be null) array2 - the second array (can be null) Returns: the new array (null if both given arrays were null) mergeStringArrays public static java.lang.String[] mergeStringArrays(java.lang.String[] array1, java.lang.String[] array2) Merge the given String arrays into one, with overlapping array elements only included once. The order of elements in the original arrays is preserved (with the exception of overlapping elements, which are only included on their first occurrence). Parameters: array1 - the first array (can be null) array2 - the second array (can be null) Returns: the new array (null if both given arrays were null) sortStringArray public static java.lang.String[] sortStringArray(java.lang.String[] array) Turn given source String array into sorted array. Parameters: array - the source array Returns: the sorted array (never null) toStringArray public static java.lang.String[] toStringArray(java.util.Collection<java.lang.String> collection) Copy the given Collection into a String array. The Collection must contain String elements only. Parameters: collection - the Collection to copy Returns: the String array (null if the passed-in Collection was null) toStringArray public static java.lang.String[] toStringArray(java.util.Enumeration<java.lang.String> enumeration) Copy the given Enumeration into a String array. The Enumeration must contain String elements only. Parameters: enumeration - the Enumeration to copy Returns: the String array (null if the passed-in Enumeration was null) trimArrayElements public static java.lang.String[] trimArrayElements(java.lang.String[] array) Trim the elements of the given String array, calling String.trim() on each of them. Parameters: array - the original String array Returns: the resulting array (of the same size) with trimmed elements removeDuplicateStrings public static java.lang.String[] removeDuplicateStrings(java.lang.String[] array) Remove duplicate Strings from the given array. Also sorts the array, as it uses a TreeSet. Parameters: array - the String array Returns: an array without duplicates, in natural sort order split public static java.lang.String[] split(java.lang.String toSplit, java.lang.String delimiter) Split a String at the first occurrence of the delimiter. Does not include the delimiter in the result. Parameters: toSplit - the string to split delimiter - to split the string up with Returns: a two element array with index 0 being before the delimiter, and index 1 being after the delimiter (neither element includes the delimiter); or null if the delimiter wasn't found in the given input String splitArrayElementsIntoProperties public static java.util.Properties splitArrayElementsIntoProperties(java.lang.String[] array, java.lang.String delimiter) Take an array Strings and split each element based on the given delimiter. A Properties instance is then generated, with the left of the delimiter providing the key, and the right of the delimiter providing the value. Will trim both the key and value before adding them to the Properties instance. Parameters: array - the array to process delimiter - to split each element using (typically the equals symbol) Returns: a Properties instance representing the array contents, or null if the array to process was null or empty splitArrayElementsIntoProperties public static java.util.Properties splitArrayElementsIntoProperties(java.lang.String[] array, java.lang.String delimiter, java.lang.String charsToDelete) Take an array Strings and split each element based on the given delimiter. A Properties instance is then generated, with the left of the delimiter providing the key, and the right of the delimiter providing the value. Will trim both the key and value before adding them to the Properties instance. Parameters: array - the array to process delimiter - to split each element using (typically the equals symbol) charsToDelete - one or more characters to remove from each element prior to attempting the split operation (typically the quotation mark symbol), or null if no removal should occur Returns: a Properties instance representing the array contents, or null if the array to process was null or empty tokenizeToStringArray public static java.lang.String[] tokenizeToStringArray(java.lang.String str, java.lang.String delimiters) Tokenize the given String into a String array via a StringTokenizer. Trims tokens and omits empty tokens. The given delimiters string is supposed to consist of any number of delimiter characters. Each of those characters can be used to separate tokens. A delimiter is always a single character; for multi-character delimiters, consider using delimitedListToStringArray Parameters: str - the String to tokenize delimiters - the delimiter characters, assembled as String (each of those characters is individually considered as delimiter). Returns: an array of the tokens See Also: StringTokenizer, String.trim(), delimitedListToStringArray(java.lang.String, java.lang.String) tokenizeToStringArray public static java.lang.String[] tokenizeToStringArray(java.lang.String str, java.lang.String delimiters, boolean trimTokens, boolean ignoreEmptyTokens) Tokenize the given String into a String array via a StringTokenizer. The given delimiters string is supposed to consist of any number of delimiter characters. Each of those characters can be used to separate tokens. A delimiter is always a single character; for multi-character delimiters, consider using delimitedListToStringArray Parameters: str - the String to tokenize delimiters - the delimiter characters, assembled as String (each of those characters is individually considered as delimiter) trimTokens - trim the tokens via String's trim ignoreEmptyTokens - omit empty tokens from the result array (only applies to tokens that are empty after trimming; StringTokenizer will not consider subsequent delimiters as token in the first place). Returns: an array of the tokens (null if the input String was null) See Also: StringTokenizer, String.trim(), delimitedListToStringArray(java.lang.String, java.lang.String) delimitedListToStringArray public static java.lang.String[] delimitedListToStringArray(java.lang.String str, java.lang.String delimiter) Take a String which is a delimited list and convert it to a String array. A single delimiter can consists of more than one character: It will still be considered as single delimiter string, rather than as bunch of potential delimiter characters - in contrast to tokenizeToStringArray. Parameters: str - the input String delimiter - the delimiter between elements (this is a single delimiter, rather than a bunch individual delimiter characters) Returns: an array of the tokens in the list See Also: tokenizeToStringArray(java.lang.String, java.lang.String) delimitedListToStringArray public static java.lang.String[] delimitedListToStringArray(java.lang.String str, java.lang.String delimiter, java.lang.String charsToDelete) Take a String which is a delimited list and convert it to a String array. A single delimiter can consists of more than one character: It will still be considered as single delimiter string, rather than as bunch of potential delimiter characters - in contrast to tokenizeToStringArray. Parameters: str - the input String delimiter - the delimiter between elements (this is a single delimiter, rather than a bunch individual delimiter characters) charsToDelete - a set of characters to delete. Useful for deleting unwanted line breaks: e.g. "\r\n\f" will delete all new lines and line feeds in a String. Returns: an array of the tokens in the list See Also: tokenizeToStringArray(java.lang.String, java.lang.String) commaDelimitedListToStringArray public static java.lang.String[] commaDelimitedListToStringArray(java.lang.String str) Convert a CSV list into an array of Strings. Parameters: str - the input String Returns: an array of Strings, or the empty array in case of empty input commaDelimitedListToSet public static java.util.Set<java.lang.String> commaDelimitedListToSet(java.lang.String str) Convenience method to convert a CSV string list to a set. Note that this will suppress duplicates. Parameters: str - the input String Returns: a Set of String entries in the list collectionToDelimitedString public static java.lang.String collectionToDelimitedString(java.util.Collection<?> coll, java.lang.String delim, java.lang.String prefix, java.lang.String suffix) Convenience method to return a Collection as a delimited (e.g. CSV) String. E.g. useful for toString() implementations. Parameters: coll - the Collection to display delim - the delimiter to use (probably a ",") prefix - the String to start each element with suffix - the String to end each element with Returns: the delimited String collectionToDelimitedString public static java.lang.String collectionToDelimitedString(java.util.Collection<?> coll, java.lang.String delim) Convenience method to return a Collection as a delimited (e.g. CSV) String. E.g. useful for toString() implementations. Parameters: coll - the Collection to display delim - the delimiter to use (probably a ",") Returns: the delimited String collectionToCommaDelimitedString public static java.lang.String collectionToCommaDelimitedString(java.util.Collection<?> coll) Convenience method to return a Collection as a CSV String. E.g. useful for toString() implementations. Parameters: coll - the Collection to display Returns: the delimited String arrayToDelimitedString public static java.lang.String arrayToDelimitedString(java.lang.Object[] arr, java.lang.String delim) Convenience method to return a String array as a delimited (e.g. CSV) String. E.g. useful for toString() implementations. Parameters: arr - the array to display delim - the delimiter to use (probably a ",") Returns: the delimited String arrayToCommaDelimitedString public static java.lang.String arrayToCommaDelimitedString(java.lang.Object[] arr) Convenience method to return a String array as a CSV String. E.g. useful for toString() implementations. Parameters: arr - the array to display Returns: the delimited String

Class StringUtils

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

StringUtils

Method Detail

hasLength

hasLength

hasText

hasText

containsWhitespace

containsWhitespace

trimWhitespace

trimAllWhitespace

trimLeadingWhitespace

trimTrailingWhitespace

trimLeadingCharacter

trimTrailingCharacter

startsWithIgnoreCase

endsWithIgnoreCase

substringMatch

countOccurrencesOf

replace

delete

deleteAny

quote

quoteIfString

unqualify

unqualify

capitalize

uncapitalize

getFilename

getFilenameExtension

stripFilenameExtension

applyRelativePath

cleanPath

pathEquals

parseLocaleString

toLanguageTag

addStringToArray

concatenateStringArrays

mergeStringArrays

sortStringArray

toStringArray

toStringArray

trimArrayElements

removeDuplicateStrings

split

splitArrayElementsIntoProperties

splitArrayElementsIntoProperties

tokenizeToStringArray

tokenizeToStringArray

delimitedListToStringArray

delimitedListToStringArray

commaDelimitedListToStringArray

commaDelimitedListToSet

collectionToDelimitedString

collectionToDelimitedString

collectionToCommaDelimitedString

arrayToDelimitedString

arrayToCommaDelimitedString