- org.thymeleaf.util.StringUtils

```
public final class StringUtils
extends 
```
Utility methods for String objects.

This class is used as a basis for the methods offered by Strings, which in turn are the methods offered by the #strings utility object in variable expressions.

Since:

1.0

Author:

Daniel Fernández, Le Roux Bernard, Soraya Sánchez Labandeira

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static`	`target, int maxSize)`
`static`	`target, suffix)`
`static`	`target)`	Convert the first letter of target to uppercase (title-case, in fact).
`static`	`target)`	Convert all the first letter of the words of target to uppercase (title-case, in fact).
`static`	`target, delimiters)`	Convert all the first letter of the words of target to uppercase (title-case, in fact), using the specified delimiter chars for determining word ends/starts.
`static`	`... values)`
`static`	`nullValue, ... values)`
`static`	`target, fragment)`
`static`	`target, fragment, locale)`
`static`	`target, suffix)`
`static`	`first, second)`
`static`	`first, second)`
`static`	`target)`	Escapes the specified target text as required for Java code.
`static`	`target)`	Escapes the specified target text as required for JavaScript code.
`static`	`target)`	XML-escapes the specified text.
`static`	`target, fragment)`
`static boolean`	`target)`
`static boolean`	`target)`
`static`	`<?> target, char separator)`
`static`	`<?> target, separator)`
`static`	`[] target, separator)`
`static`	`target)`
`static`	`target)`	Removes all whitespaces and control chars at all positions, and transforms to lower case.
`static`	`target, prefix)`
`static`	`randomAlphanumeric(int count)`
`static`	`target, int times)`
`static`	`target, before, after)`
`static []`	`target, separator)`
`static`	`target, prefix)`
`static`	`target, int beginIndex)`	copy a part of target start beginIndex to the end of target.
`static`	`target, int beginIndex, int endIndex)`
`static`	`target, substr)`
`static`	`target, substr)`
`static`	`target, locale)`
`static`	`target)`	Performs a null-safe `toString()` operation.
`static`	`target, locale)`
`static`	`target)`
`static`	`target)`	Convert the first letter of target to lowercase.
`static`	`target)`	Un-escapes the specified Java-escaped target text back to normal form.
`static`	`target)`	Un-escapes the specified JavaScript-escaped target text back to normal form.

Methods inherited from class java.lang.
, , , , , , , , , ,

- Method Detail
  - toString
```
public static  toString( target)
```
    Performs a null-safe toString() operation.
    
    Parameters:
    
    target - the object on which toString will be executed
    
    Returns:
    
    the result of calling target.toString() if target is not null, null if target is null.
    
    Since:
    
    2.0.12
  - abbreviate
```
public static  abbreviate( target,
                                int maxSize)
```
  - equals
```
public static  equals( first,
                              second)
```
    Parameters:
    
    first - first
    
    second - second
    
    Returns:
    
    the result
    
    Since:
    
    2.0.16
  - equalsIgnoreCase
```
public static  equalsIgnoreCase( first,
                                        second)
```
    Parameters:
    
    first - first
    
    second - second
    
    Returns:
    
    the result
    
    Since:
    
    2.0.16
  - contains
```
public static  contains( target,
                                fragment)
```
  - containsIgnoreCase
```
public static  containsIgnoreCase( target,
                                          fragment,
                                          locale)
```
  - startsWith
```
public static  startsWith( target,
                                  prefix)
```
  - endsWith
```
public static  endsWith( target,
                                suffix)
```
  - substring
```
public static  substring( target,
                               int beginIndex,
                               int endIndex)
```
  - substring
```
public static  substring( target,
                               int beginIndex)
```
    copy a part of target start beginIndex to the end of target. If non-String object, toString() will be called.
    
    Parameters:
    
    target - source of the copy.
    
    beginIndex - index where the copy start.
    
    Returns:
    
    part of target, or null if target is null.
    
    Since:
    
    1.1.2
  - substringAfter
```
public static  substringAfter( target,
                                     substr)
```
  - substringBefore
```
public static  substringBefore( target,
                                      substr)
```
  - prepend
```
public static  prepend( target,
                              prefix)
```
  - append
```
public static  append( target,
                             suffix)
```
  - repeat
```
public static  repeat( target,
                            int times)
```
    Parameters:
    
    target - target
    
    times - times
    
    Returns:
    
    the result
    
    Since:
    
    2.1.0
  - concat
```
public static  concat(... values)
```
    Parameters:
    
    values - values
    
    Returns:
    
    the result
    
    Since:
    
    2.0.16
  - concatReplaceNulls
```
public static  concatReplaceNulls( nullValue,
                                        ... values)
```
    Parameters:
    
    nullValue - nullValue
    
    values - values
    
    Returns:
    
    the result
    
    Since:
    
    2.0.16
  - indexOf
```
public static  indexOf( target,
                               fragment)
```
  - isEmpty
```
public static boolean isEmpty( target)
```
    Parameters:
    
    target - target
    
    Returns:
    
    the result
    
    Since:
    
    2.1.0
  - isEmptyOrWhitespace
```
public static boolean isEmptyOrWhitespace( target)
```
  - join
```
public static  join([] target,
                           separator)
```
  - join
```
public static  join(<?> target,
                           separator)
```
  - join
```
public static  join(<?> target,
                          char separator)
```
  - split
```
public static [] split( target,
                              separator)
```
  - length
```
public static  length( target)
```
  - replace
```
public static  replace( target,
                              before,
                              after)
```
  - toUpperCase
```
public static  toUpperCase( target,
                                  locale)
```
  - toLowerCase
```
public static  toLowerCase( target,
                                  locale)
```
  - trim
```
public static  trim( target)
```
  - pack
```
public static  pack( target)
```
    Removes all whitespaces and control chars at all positions, and transforms to lower case.
    
    Parameters:
    
    target - the string to be packed
    
    Returns:
    
    the packed string
    
    Since:
    
    3.0.12
  - capitalize
```
public static  capitalize( target)
```
    Convert the first letter of target to uppercase (title-case, in fact).
    
    Parameters:
    
    target - the String to be capitalized. If non-String object, toString() will be called.
    
    Returns:
    
    String the result of capitalizing the target.
    
    Since:
    
    1.1.2
  - unCapitalize
```
public static  unCapitalize( target)
```
    Convert the first letter of target to lowercase.
    
    Parameters:
    
    target - the String to be uncapitalized. If non-String object, toString() will be called.
    
    Returns:
    
    String the result of uncapitalizing the target.
    
    Since:
    
    1.1.2
  - capitalizeWords
```
public static  capitalizeWords( target)
```
    Convert all the first letter of the words of target to uppercase (title-case, in fact). The default delimiter characters between the words are the whitespace characters (see Characters.IsWhiteSpace method in the Java doc).
    
    Parameters:
    
    target - the String to be capitalized. If non-String object, toString() will be called.
    
    Returns:
    
    String the result of capitalizing the target.
    
    Since:
    
    1.1.2
  - capitalizeWords
```
public static  capitalizeWords( target,
                                      delimiters)
```
    Convert all the first letter of the words of target to uppercase (title-case, in fact), using the specified delimiter chars for determining word ends/starts.
    
    Parameters:
    
    target - the String to be capitalized. If non-String object, toString() will be called.
    
    delimiters - delimiters of the words. If non-String object, toString() will be called.
    
    Returns:
    
    String the result of capitalizing the target.
    
    Since:
    
    1.1.2
  - escapeXml
```
public static  escapeXml( target)
```
    XML-escapes the specified text.
    
    Parameters:
    
    target - the text to be escaped
    
    Returns:
    
    the escaped text.
    
    Since:
    
    2.0.9
  - escapeJavaScript
```
public static  escapeJavaScript( target)
```
    Escapes the specified target text as required for JavaScript code.
    
    Parameters:
    
    target - the text to be escaped
    
    Returns:
    
    the escaped text.
    
    Since:
    
    2.0.11
  - escapeJava
```
public static  escapeJava( target)
```
    Escapes the specified target text as required for Java code.
    
    Parameters:
    
    target - the text to be escaped
    
    Returns:
    
    the escaped text.
    
    Since:
    
    2.0.11
  - unescapeJavaScript
```
public static  unescapeJavaScript( target)
```
    Un-escapes the specified JavaScript-escaped target text back to normal form.
    
    Parameters:
    
    target - the text to be unescaped
    
    Returns:
    
    the unescaped text.
    
    Since:
    
    2.0.11
  - unescapeJava
```
public static  unescapeJava( target)
```
    Un-escapes the specified Java-escaped target text back to normal form.
    
    Parameters:
    
    target - the text to be unescaped
    
    Returns:
    
    the unescaped text.
    
    Since:
    
    2.0.11
  - randomAlphanumeric
```
public static  randomAlphanumeric(int count)
```

Class StringUtils

Method Summary

Methods inherited from class java.lang.

Method Detail

toString

abbreviate

equals

equalsIgnoreCase

contains

containsIgnoreCase

startsWith

endsWith

substring

substring

substringAfter

substringBefore

prepend

append

repeat

concat

concatReplaceNulls

indexOf

isEmpty

isEmptyOrWhitespace

join

join

join

split

length

replace

toUpperCase

toLowerCase

trim

pack

capitalize

unCapitalize

capitalizeWords

capitalizeWords

escapeXml

escapeJavaScript

escapeJava

unescapeJavaScript

unescapeJava

randomAlphanumeric