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org.springframework.util
Class StringUtils

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

public abstract class StringUtils
extends Object
extends 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 StringBuffer classes, such as the ability to replace 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:: 16 April 2001
Author:: Rod Johnson, Juergen Hoeller, Keith Donald, Rob Harrop
See Also:: org.apache.commons.lang.StringUtils

Constructor Summary

StringUtils()


Method Summary

static String[] addStringToArray(String[] array, 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 String applyRelativePath(String path, String relativePath)
          Apply the given relative path to the given path, assuming standard Java folder separation (i.e. "/" separators);

static String arrayToCommaDelimitedString(Object[] arr)
          Convenience method to return a String array as a CSV String.

static String arrayToDelimitedString(Object[] arr, String delim)
          Convenience method to return a String array as a delimited (e.g.

static String capitalize(String str)
          Capitalize a String, changing the first letter to upper case as per Character.toUpperCase(char).

static String cleanPath(String path)
          Normalize the path by suppressing sequences like "path/.." and inner simple dots.

static String collectionToCommaDelimitedString(Collection coll)
          Convenience method to return a Collection as a CSV String.

static String collectionToDelimitedString(Collection coll, String delim)
          Convenience method to return a Collection as a delimited (e.g.

static String collectionToDelimitedString(Collection coll, String delim, String prefix, String suffix)
          Convenience method to return a Collection as a delimited (e.g.

static Set commaDelimitedListToSet(String str)
          Convenience method to convert a CSV string list to a set.

static String[] commaDelimitedListToStringArray(String str)
          Convert a CSV list into an array of Strings.

static String[] concatenateStringArrays(String[] array1, String[] array2)
          Concatenate the given String arrays into one, with overlapping array elements included twice.

static boolean containsWhitespace(String str)
          Check whether the given String contains any whitespace characters.

static int countOccurrencesOf(String str, String sub)
          Count the occurrences of the substring in string s.

static String delete(String inString, String pattern)
          Delete all occurrences of the given substring.

static String deleteAny(String inString, String charsToDelete)
          Delete any character in a given string.

static String[] delimitedListToStringArray(String str, String delimiter)
          Take a String which is a delimited list and convert it to a String array.

static boolean endsWithIgnoreCase(String str, String suffix)
          Test if the given String ends with the specified suffix, ignoring upper/lower case.

static String getFilename(String path)
          Extract the filename from the given path, e.g.

static String getFilenameExtension(String path)
          Extract the filename extension from the given path, e.g.

static boolean hasLength(String str)
          Check that the given String is neither null nor of length 0.

static boolean hasText(String str)
          Check whether the given String has actual text.

static String[] mergeStringArrays(String[] array1, String[] array2)
          Merge the given String arrays into one, with overlapping array elements only included once.

static Locale parseLocaleString(String localeString)
          Parse the given locale string into a java.util.Locale.

static boolean pathEquals(String path1, String path2)
          Compare two paths after normalization of them.

static String quote(String str)
          Quote the given String with single quotes.

static Object quoteIfString(Object obj)
          Turn the given Object into a String with single quotes if it is a String; keeping the Object as-is else.

static String[] removeDuplicateStrings(String[] array)
          Remove duplicate Strings from the given array.

static String replace(String inString, String oldPattern, String newPattern)
          Replace all occurences of a substring within a string with another string.

static String[] sortStringArray(String[] array)
          Turn given source String array into sorted array.

static String[] split(String toSplit, String delimiter)
          Split a String at the first occurrence of the delimiter.

static Properties splitArrayElementsIntoProperties(String[] array, String delimiter)
          Take an array Strings and split each element based on the given delimiter.

static Properties splitArrayElementsIntoProperties(String[] array, String delimiter, String charsToDelete)
          Take an array Strings and split each element based on the given delimiter.

static boolean startsWithIgnoreCase(String str, String prefix)
          Test if the given String starts with the specified prefix, ignoring upper/lower case.

static String stripFilenameExtension(String path)
          Strip the filename extension from the given path, e.g.

static String[] tokenizeToStringArray(String str, String delimiters)
          Tokenize the given String into a String array via a StringTokenizer.

static String[] tokenizeToStringArray(String str, String delimiters, boolean trimTokens, boolean ignoreEmptyTokens)
          Tokenize the given String into a String array via a StringTokenizer.

static String[] toStringArray(Collection collection)
          Copy the given Collection into a String array.

static String trimAllWhitespace(String str)
          Trim all whitespace from the given String: leading, trailing, and inbetween characters.

static String trimLeadingWhitespace(String str)
          Trim leading whitespace from the given String.

static String trimTrailingWhitespace(String str)
          Trim trailing whitespace from the given String.

static String trimWhitespace(String str)
          Trim leading and trailing whitespace from the given String.

static String uncapitalize(String str)
          Uncapitalize a String, changing the first letter to lower case as per Character.toLowerCase(char).

static String unqualify(String qualifiedName)
          Unqualify a string qualified by a '.' dot character.

static String unqualify(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 Summary
`StringUtils()`

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

 StringUtils.hasLength(null) = false
 StringUtils.hasLength("") = false
 StringUtils.hasLength(" ") = true
 StringUtils.hasLength("Hello") = true

Parameters:: str - the String to check (may be null)
Returns:: true if the String is not null and has length
See Also:: hasText(String)

hasText

public static boolean hasText(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.
 
 StringUtils.hasText(null) = false
 StringUtils.hasText("") = false
 StringUtils.hasText(" ") = false
 StringUtils.hasText("12345") = true
 StringUtils.hasText(" 12345 ") = true

Parameters:: str - the String to check (may be null)
Returns:: true if the String is not null, its length is greater than 0, and is does not contain whitespace only
See Also:: Character.isWhitespace(char)





containsWhitespace
public static boolean containsWhitespace(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:
Character.isWhitespace(char)





trimWhitespace
public static String trimWhitespace(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)





trimLeadingWhitespace
public static String trimLeadingWhitespace(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 String trimTrailingWhitespace(String str)

Trim trailing whitespace from the given String.


Parameters:
str - the String to check
Returns:
the trimmed String
See Also:
Character.isWhitespace(char)





trimAllWhitespace
public static String trimAllWhitespace(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)





startsWithIgnoreCase
public static boolean startsWithIgnoreCase(String str,
                                           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(String str,
                                         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)





countOccurrencesOf
public static int countOccurrencesOf(String str,
                                     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 String replace(String inString,
                             String oldPattern,
                             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 String delete(String inString,
                            String pattern)

Delete all occurrences of the given substring.


Parameters:
pattern - the pattern to delete all occurrences of





deleteAny
public static String deleteAny(String inString,
                               String charsToDelete)

Delete any character in a given string.


Parameters:
charsToDelete - a set of characters to delete.
 E.g. "az\n" will delete 'a's, 'z's and new lines.





quote
public static String quote(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 Object quoteIfString(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 String unqualify(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 String unqualify(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 String capitalize(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 String uncapitalize(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 String getFilename(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 String getFilenameExtension(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 String stripFilenameExtension(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 String applyRelativePath(String path,
                                       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 String cleanPath(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(String path1,
                                 String path2)

Compare two paths after normalization of them.


Parameters:
path1 - First path for comparizon
path2 - Second path for comparizon
Returns:
whether the two paths are equivalent after normalization





parseLocaleString
public static Locale parseLocaleString(String localeString)

Parse the given locale string into a java.util.Locale.
 This is the inverse operation of Locale's toString.


Parameters:
localeString - the locale string, following
 java.util.Locale's toString format ("en", "en_UK", etc).
 Also accepts spaces as separators, as alternative to underscores.
Returns:
a corresponding Locale instance





addStringToArray
public static String[] addStringToArray(String[] array,
                                        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 String[] concatenateStringArrays(String[] array1,
                                               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 String[] mergeStringArrays(String[] array1,
                                         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 occurence).


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 String[] sortStringArray(String[] array)

Turn given source String array into sorted array.


Parameters:
array - the source array
Returns:
the sorted array (never null)





toStringArray
public static String[] toStringArray(Collection 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)





removeDuplicateStrings
public static String[] removeDuplicateStrings(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 String[] split(String toSplit,
                             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 Properties splitArrayElementsIntoProperties(String[] array,
                                                          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 Properties splitArrayElementsIntoProperties(String[] array,
                                                          String delimiter,
                                                          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 String[] tokenizeToStringArray(String str,
                                             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 String[] tokenizeToStringArray(String str,
                                             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 String[] delimitedListToStringArray(String str,
                                                  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)





commaDelimitedListToStringArray
public static String[] commaDelimitedListToStringArray(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 Set commaDelimitedListToSet(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 String collectionToDelimitedString(Collection coll,
                                                 String delim,
                                                 String prefix,
                                                 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





collectionToDelimitedString
public static String collectionToDelimitedString(Collection coll,
                                                 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 ",")





collectionToCommaDelimitedString
public static String collectionToCommaDelimitedString(Collection coll)

Convenience method to return a Collection as a CSV String.
 E.g. useful for toString() implementations.


Parameters:
coll - the Collection to display





arrayToDelimitedString
public static String arrayToDelimitedString(Object[] arr,
                                            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 ",")





arrayToCommaDelimitedString
public static String arrayToCommaDelimitedString(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














  
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Copyright © 2002-2007 The Spring Framework.


 
 

 

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StringUtils (Spring Framework API 2.1) - Spring Framework 2.1.0 API 文档英文版

org.springframework.util Class StringUtils

StringUtils

hasLength

hasText

containsWhitespace

trimWhitespace

trimLeadingWhitespace

trimTrailingWhitespace

trimAllWhitespace

startsWithIgnoreCase

endsWithIgnoreCase

countOccurrencesOf

replace

delete

deleteAny

quote

quoteIfString

unqualify

unqualify

capitalize

uncapitalize

getFilename

getFilenameExtension

stripFilenameExtension

applyRelativePath

cleanPath

pathEquals

parseLocaleString

addStringToArray

concatenateStringArrays

mergeStringArrays

sortStringArray

toStringArray

removeDuplicateStrings

split

splitArrayElementsIntoProperties

splitArrayElementsIntoProperties

tokenizeToStringArray

tokenizeToStringArray

delimitedListToStringArray

commaDelimitedListToStringArray

commaDelimitedListToSet

collectionToDelimitedString

collectionToDelimitedString

collectionToCommaDelimitedString

arrayToDelimitedString

arrayToCommaDelimitedString

org.springframework.util
Class StringUtils