StringUtil (Hazelcast Root 3.12.12 API)

java.lang.Object
- com.hazelcast.util.StringUtil

public final class StringUtil
extends Object

Utility class for Strings.

Field Summary

Fields
Modifier and Type	Field and Description
`static String`	`LINE_SEPARATOR` Points to the System property 'line.separator'.
`static Locale`	`LOCALE_INTERNAL` LOCALE_INTERNAL is the default locale for string operations and number formatting.
`static Charset`	`UTF8_CHARSET` UTF-8 Charset
`static Pattern`	`VERSION_PATTERN` Pattern used to tokenize version strings.

Method Summary

All Methods Static Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`static String`	`bytesToString(byte[] bytes)` Creates a UTF8_CHARSET string from a byte array.
`static String`	`bytesToString(byte[] bytes, int offset, int length)` Creates a UTF8_CHARSET string from a byte array.
`static boolean`	`equalsIgnoreCase(String str1, String str2)` Returns true if two strings are equals ignoring the letter case in `LOCALE_INTERNAL` locale.
`static String`	`formatXml(String input, int indent)` Deprecated. Use directly `XmlUtil.format(String, int)`
`static String`	`getterIntoProperty(String getterName)` Convert getter into a property name Example: 'getFoo' is converted into 'foo' It's written defensively, when output is not a getter then it returns the original name.
`static int`	`indexOf(String input, char ch)` Like a String.indexOf but without MIN_SUPPLEMENTARY_CODE_POINT handling
`static int`	`indexOf(String input, char ch, int offset)` Like a String.indexOf but without MIN_SUPPLEMENTARY_CODE_POINT handling
`static String[]`	`intersection(String[] arr1, String[] arr2)` Returns intersection of given String arrays.
`static boolean`	`isNullOrEmpty(String s)` Checks if a string is empty or not.
`static boolean`	`isNullOrEmptyAfterTrim(String s)` Checks if a string is empty or not after trim operation
`static int`	`lastIndexOf(String input, char ch)` Like a String.lastIndexOf but without MIN_SUPPLEMENTARY_CODE_POINT handling
`static int`	`lastIndexOf(String input, char ch, int offset)` Like a String.lastIndexOf but without MIN_SUPPLEMENTARY_CODE_POINT handling
`static String`	`lowerCaseFirstChar(String s)` Converts the first character to lower case.
`static String`	`lowerCaseInternal(String s)` HC specific settings, operands etc.
`static String[]`	`splitByComma(String input, boolean allowEmpty)` Splits String value with comma "," used as a separator.
`static byte[]`	`stringToBytes(String s)` Creates a byte array from a string.
`static String[]`	`subtraction(String[] arr1, String[] arr2)` Returns subtraction between given String arrays.
`static String`	`timeToString(long timeMillis)` Returns a String representation of the time.
`static String`	`timeToStringFriendly(long timeMillis)` Returns a String representation of the time.
`static String[]`	`tokenizeVersionString(String version)` Tokenizes a version string and returns the tokens with the following grouping: (1) major version, eg "3" (2) minor version, eg "8" (3) patch version prefixed with ".", if exists, otherwise `null` (eg ".0") (4) patch version, eg "0" (5) 1st -qualifier, if exists (6) -SNAPSHOT qualifier, if exists
`static String`	`trim(String input)` Trim whitespaces.
`static String`	`upperCaseInternal(String s)` HC specific settings, operands etc.

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

- Field Detail
  - UTF8_CHARSET
```
public static final Charset UTF8_CHARSET
```
    UTF-8 Charset
  - LINE_SEPARATOR
```
public static final String LINE_SEPARATOR
```
    Points to the System property 'line.separator'.
  - LOCALE_INTERNAL
```
public static final Locale LOCALE_INTERNAL
```
    LOCALE_INTERNAL is the default locale for string operations and number formatting. Initialized to java.util.Locale.US (US English).
  - VERSION_PATTERN
```
public static final Pattern VERSION_PATTERN
```
    Pattern used to tokenize version strings.
- Method Detail
  - bytesToString
```
public static String bytesToString(byte[] bytes,
                                   int offset,
                                   int length)
```
    Creates a UTF8_CHARSET string from a byte array.
    
    Parameters:
    
    bytes - the byte array.
    
    offset - the index of the first byte to decode
    
    length - the number of bytes to decode
    
    Returns:
    
    the string created from the byte array.
  - bytesToString
```
public static String bytesToString(byte[] bytes)
```
    Creates a UTF8_CHARSET string from a byte array.
    
    Parameters:
    
    bytes - the byte array.
    
    Returns:
    
    the string created from the byte array.
  - stringToBytes
```
public static byte[] stringToBytes(String s)
```
    Creates a byte array from a string.
    
    Parameters:
    
    s - the string.
    
    Returns:
    
    the byte array created from the string.
  - isNullOrEmpty
```
public static boolean isNullOrEmpty(String s)
```
    Checks if a string is empty or not.
    
    Parameters:
    
    s - the string to check.
    
    Returns:
    
    true if the string is null or empty, false otherwise
  - isNullOrEmptyAfterTrim
```
public static boolean isNullOrEmptyAfterTrim(String s)
```
    Checks if a string is empty or not after trim operation
    
    Parameters:
    
    s - the string to check.
    
    Returns:
    
    true if the string is null or empty, false otherwise
  - upperCaseInternal
```
public static String upperCaseInternal(String s)
```
    HC specific settings, operands etc. use this method. Creates an uppercase string from the given string.
    
    Parameters:
    
    s - the given string
    
    Returns:
    
    an uppercase string, or null/empty if the string is null/empty
  - lowerCaseFirstChar
```
public static String lowerCaseFirstChar(String s)
```
    Converts the first character to lower case. Empty strings are ignored.
    
    Parameters:
    
    s - the given string
    
    Returns:
    
    the converted string.
  - lowerCaseInternal
```
public static String lowerCaseInternal(String s)
```
    HC specific settings, operands etc. use this method. Creates a lowercase string from the given string.
    
    Parameters:
    
    s - the given string
    
    Returns:
    
    a lowercase string, or null/empty if the string is null/empty
  - timeToString
```
public static String timeToString(long timeMillis)
```
    Returns a String representation of the time.
    This method is not particularly efficient since it generates a ton of litter.
    
    Parameters:
    
    timeMillis - time in millis
    
    Returns:
    
    the String
  - timeToStringFriendly
```
public static String timeToStringFriendly(long timeMillis)
```
    Returns a String representation of the time. If time is 0, then 'never' is returned.
    This method is not particularly efficient since it generates a ton of litter.
    
    Parameters:
    
    timeMillis - time in millis
    
    Returns:
    
    the String
  - indexOf
```
public static int indexOf(String input,
                          char ch,
                          int offset)
```
    Like a String.indexOf but without MIN_SUPPLEMENTARY_CODE_POINT handling
    
    Parameters:
    
    input - to check the indexOf on
    
    ch - character to find the index of
    
    offset - offset to start the reading from
    
    Returns:
    
    index of the character, or -1 if not found
  - indexOf
```
public static int indexOf(String input,
                          char ch)
```
    Like a String.indexOf but without MIN_SUPPLEMENTARY_CODE_POINT handling
    
    Parameters:
    
    input - to check the indexOf on
    
    ch - character to find the index of
    
    Returns:
    
    index of the character, or -1 if not found
  - lastIndexOf
```
public static int lastIndexOf(String input,
                              char ch,
                              int offset)
```
    Like a String.lastIndexOf but without MIN_SUPPLEMENTARY_CODE_POINT handling
    
    Parameters:
    
    input - to check the indexOf on
    
    ch - character to find the index of
    
    offset - offset to start the reading from the end
    
    Returns:
    
    index of the character, or -1 if not found
  - lastIndexOf
```
public static int lastIndexOf(String input,
                              char ch)
```
    Like a String.lastIndexOf but without MIN_SUPPLEMENTARY_CODE_POINT handling
    
    Parameters:
    
    input - to check the indexOf on
    
    ch - character to find the index of
    
    Returns:
    
    index of the character, or -1 if not found
  - tokenizeVersionString
```
public static String[] tokenizeVersionString(String version)
```
    Tokenizes a version string and returns the tokens with the following grouping: (1) major version, eg "3" (2) minor version, eg "8" (3) patch version prefixed with ".", if exists, otherwise null (eg ".0") (4) patch version, eg "0" (5) 1st -qualifier, if exists (6) -SNAPSHOT qualifier, if exists
    
    Parameters:
    
    version -
    
    Returns:
  - getterIntoProperty
```
public static String getterIntoProperty(String getterName)
```
    Convert getter into a property name Example: 'getFoo' is converted into 'foo' It's written defensively, when output is not a getter then it returns the original name. It only converts names starting with a get- prefix. When a getter starts with an is- prefix (=boolean) then it does not convert it.
    
    Parameters:
    
    getterName -
    
    Returns:
    
    property matching the given getter
  - trim
```
public static String trim(String input)
```
    Trim whitespaces. This method (compared to String.trim()) doesn't limit to space character.
    
    Parameters:
    
    input - string to trim
    
    Returns:
    
    null if provided value was null, input with removed leading and trailing whitespaces
  - splitByComma
```
public static String[] splitByComma(String input,
                                    boolean allowEmpty)
```
    Splits String value with comma "," used as a separator. The whitespaces around values are trimmed.
    
    Parameters:
    
    input - string to split
    
    Returns:
    
    null if provided value was null, split parts otherwise (trimmed)
  - intersection
```
public static String[] intersection(String[] arr1,
                                    String[] arr2)
```
    Returns intersection of given String arrays. If either array is null, then null is returned.
    
    Parameters:
    
    arr1 - first array
    
    arr2 - second array
    
    Returns:
    
    arr1 without values which are not present in arr2
  - subtraction
```
public static String[] subtraction(String[] arr1,
                                   String[] arr2)
```
    Returns subtraction between given String arrays.
    
    Parameters:
    
    arr1 - first array
    
    arr2 - second array
    
    Returns:
    
    arr1 without values which are not present in arr2
  - equalsIgnoreCase
```
public static boolean equalsIgnoreCase(String str1,
                                       String str2)
```
    Returns true if two strings are equals ignoring the letter case in LOCALE_INTERNAL locale.
    
    Parameters:
    
    str1 - first string to compare
    
    str2 - second string to compare
    
    Returns:
    
    true if the strings are equals ignoring the case
  - formatXml
```
@Deprecated
public static String formatXml(@Nullable
                                           String input,
                                           int indent)
                                    throws IllegalArgumentException
```
    Deprecated. Use directly XmlUtil.format(String, int)
    
    Formats given XML String with the given indentation used. If the input XML string is null, or indent parameter is negative, or XML transformation fails, then the original value is returned unchanged. The IllegalArgumentException is thrown when indent==0.
    
    Parameters:
    
    input - the XML String
    
    indent - indentation (number of spaces used for one indentation level)
    
    Returns:
    
    formatted XML String or the original String if the formatting fails.
    
    Throws:
    
    IllegalArgumentException - when indentation is equal to zero

Class StringUtil

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

UTF8_CHARSET

LINE_SEPARATOR

LOCALE_INTERNAL

VERSION_PATTERN

Method Detail

bytesToString

bytesToString

stringToBytes

isNullOrEmpty

isNullOrEmptyAfterTrim

upperCaseInternal

lowerCaseFirstChar

lowerCaseInternal

timeToString

timeToStringFriendly

indexOf

indexOf

lastIndexOf

lastIndexOf

tokenizeVersionString

getterIntoProperty

trim

splitByComma

intersection

subtraction

equalsIgnoreCase

formatXml