StringUtil (Hazelcast Root 3.12.9 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
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`	`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

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