net.fckeditor.tool
Class Utils

java.lang.Object
  net.fckeditor.tool.Utils

public class Utils
extends Object

Static helper methods for strings.

Version:

$Id: Utils.java 4785 2009-12-21 20:10:28Z mosipov $

Field Summary

static String

EMPTY_STRING The empty string "".

Constructor Summary

Utils()

Method Summary

static Set<String>	getSet(String stringList) Constructs a set of lower-cased strings from a | (pipe) delimited string.
static Set<String>	getSet(String stringList, String delimiter) Constructs a set of lower-cased strings from a delimiter-separated string.
static boolean	isBlank(String str) Checks if a string is whitespace, empty ("") or null.
static boolean	isEmpty(String str) Checks if a string is empty ("") or null.
static boolean	isNotBlank(String str) Checks if a string is not empty (""), not null and not whitespace.
static boolean	isNotEmpty(String str) Checks if a string is not empty ("") and not null.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EMPTY_STRING

public static final String EMPTY_STRING

The empty string "".

See Also:

Constant Field Values

Constructor Detail

Utils

public Utils()

Method Detail

getSet

public static Set<String> getSet(String stringList,
                                 String delimiter)

Constructs a set of lower-cased strings from a delimiter-separated string.

Parameters:

stringList - strings separated with a delimiter

delimiter - separating delimiter

Returns:

a lower-cased set, empty set if stringList is empty

Throws:

IllegalArgumentException - if delimiter is empty

getSet

public static Set<String> getSet(String stringList)

Constructs a set of lower-cased strings from a | (pipe) delimited string.

Parameters:

stringList - strings separated with a delimiter

Returns:

a lower-cased set, empty set if stringList is empty

Throws:

IllegalArgumentException - if delimiter is empty

See Also:

getSet(String, String)

isEmpty

public static boolean isEmpty(String str)

Checks if a string is empty ("") or null.

Parameters:

str - string to check, may be null

Returns:

true if the string is null or empty, else false

isNotEmpty

public static boolean isNotEmpty(String str)

Checks if a string is not empty ("") and not null.

Parameters:

str - string to check, may be null

Returns:

true if the string is not empty and not null, else false

isBlank

public static boolean isBlank(String str)

Checks if a string is whitespace, empty ("") or null. Whitespace is checked by Character.isWhitespace(char).

Parameters:

str - string to check, may be null

Returns:

true if the string is null, empty or whitespace

isNotBlank

public static boolean isNotBlank(String str)

Checks if a string is not empty (""), not null and not whitespace.

Parameters:

str - string to check, may be null

Returns:

true if the string is not null, not empty and not whitespace.