Package edu.internet2.middleware.grouper.util

Class GrouperUtilElSafe

java.lang.Object

edu.internet2.middleware.grouper.util.GrouperUtilElSafe

public class GrouperUtilElSafe
extends Object

utility methods for grouper that are safe to use in expression language. Generally these are static methods.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DATE_FORMAT	string format of dates
static final String	DATE_FORMAT2	string format of dates
static final String	DATE_MINUTES_SECONDS_FORMAT	format including minutes and seconds: yyyy/MM/dd HH:mm:ss
static final String	DATE_MINUTES_SECONDS_NO_SLASH_FORMAT	format including minutes and seconds: yyyyMMdd HH:mm:ss
static final int	DEFAULT_BUFFER_SIZE	The name says it all.
static final String	EMPTY	The empty String "".
static final Object[]	EMPTY_OBJECT_ARRAY	An empty immutable Object array.
static final String[]	EMPTY_STRING_ARRAY	An empty immutable String array.
static final int	INDEX_NOT_FOUND	Represents a failed index search.
static final String	LOG_ERROR
static final int	NOT_FOUND	special number when a number is not found
static final long	ONE_GB	The number of bytes in a gigabyte.
static final long	ONE_KB	The number of bytes in a kilobyte.
static final long	ONE_MB	The number of bytes in a megabyte.
static final String	TIMESTAMP_FILE_FORMAT	string format of dates for file names
static final String	TIMESTAMP_FORMAT	format on screen of config for milestone: yyyy/MM/dd HH:mm:ss.SSS
static final String	TIMESTAMP_NO_SLASH_FORMAT	format on screen of config for milestone: yyyyMMdd HH:mm:ss.SSS

Constructor Summary

Constructors

Constructor	Description
GrouperUtilElSafe()

Method Summary

Modifier and Type	Method	Description
static String	abbreviate(String str, int maxWidth)	Abbreviates a String using ellipses.
static String	abbreviate(String str, int offset, int maxWidth)	Abbreviates a String using ellipses.
static <T> void	addIfNotThere(Collection<T> list, Collection<T> listToAdd)	add each element of listToAdd if it is not already in list
static void	append(StringBuilder result, String separatorIfResultNotEmpty, String stringToAppend)	append and maybe put a separator in there
static boolean	appendIfNotBlank(StringBuilder result, Object theStringOrArrayOrList)	if theString is not blank, apppend it to the result, and if appending,
static boolean	appendIfNotBlank(StringBuilder result, String prefix, Object theStringOrArrayOrList)	if theString is not Blank, apppend it to the result, and if appending, add a prefix (if not null)
static boolean	appendIfNotBlank(StringBuilder result, String prefix, Object theStringOrArrayOrList, String suffix)	if theString is not Blank, apppend it to the result, and if appending, add a prefix and suffix (if not null)
static boolean	appendIfNotBlank(StringBuilder result, String prefix, String prefixIfNotBlank, Object theStringOrArrayOrList, String suffix)	if theString is not Blank, apppend it to the result, and if appending, add a prefix and suffix (if not null)
static String	appendIfNotBlankString(String string, String separator, String suffix)	append a string to another string if both not blank, with separator.
static boolean	appendIfNotEmpty(StringBuilder result, Object theStringOrArrayOrList)	if theString is not empty, apppend it to the result, and if appending,
static boolean	appendIfNotEmpty(StringBuilder result, String prefix, Object theStringOrArrayOrList)	if theString is not empty, apppend it to the result, and if appending, add a prefix (if not null)
static boolean	appendIfNotEmpty(StringBuilder result, String prefix, Object theStringOrArrayOrList, String suffix)	if theString is not empty, apppend it to the result, and if appending, add a prefix and suffix (if not null)
static boolean	appendIfNotEmpty(StringBuilder result, String prefix, String prefixIfNotEmpty, Object theStringOrArrayOrList, String suffix)	if theString is not empty, apppend it to the result, and if appending, add a prefix and suffix (if not null)
static String	appendPrefixIfStringNotBlank(String prefix, String separator, String string)	append a prefix to another string if both not blank.
static String	argAfter(String[] args, String argBefore)	return the arg after the argBefore, or null if not there, or exception if argBefore is not found
static <T> T	arrayPopOne(T[] array)	Return the zero element of the array, if it exists, null if the array is empty.
static void	assertion(boolean isTrue, String reason)	If false, throw an assertException, and give a reason
static <T> List<T>	batchList(Collection<T> collection, int batchSize, int batchIndex)	retrieve a batch by 0 index.
static int	batchNumberOfBatches(int count, int batchSize)	Deprecated. use batchNumberOfBatches(Collection<?> collection, int batchSize, boolean haveAtLeastOne)
static int	batchNumberOfBatches(int count, int batchSize, boolean haveAtLeastOne)	If batching this is the number of batches
static int	batchNumberOfBatches(Collection<?> collection, int batchSize)	Deprecated. use batchNumberOfBatches(Collection<?> collection, int batchSize, boolean haveAtLeastOne)
static int	batchNumberOfBatches(Collection<?> collection, int batchSize, boolean haveAtLeastOne)	If batching this is the number of batches, will return at least 1
static BigDecimal	bigDecimalObjectValue(Object input)	Convert an object to a byte, allow nulls
static Boolean	booleanObjectValue(Object object)	get the Boolean value for an object
static boolean	booleanValue(Object object)	get the boolean value for an object, cant be null or blank
static boolean	booleanValue(Object object, boolean defaultBoolean)	get the boolean value for an object
static String	byteCountToDisplaySize(long size)	Returns a human-readable version of the file size (original is in bytes).
static Byte	byteObjectValue(Object input)	Convert an object to a byte, allow nulls
static byte	byteValue(Object input)	convert an object to a byte
static String	capitalize(String str)	Capitalizes a String changing the first letter to title case as per Character.toTitleCase(char).
static String	capitalize(String str, char... delimiters)	Capitalizes all the delimiter separated words in a String.
static String	capitalizeFully(String str)	Converts all the whitespace separated words in a String into capitalized words, that is each word is made up of a titlecase character and then a series of lowercase characters.
static String	capitalizeFully(String str, char... delimiters)	Converts all the delimiter separated words in a String into capitalized words, that is each word is made up of a titlecase character and then a series of lowercase characters.
static boolean	characterMatchesRegex(Character character, String regex)
static Character	charObjectValue(Object input)	get the Character wrapper value for the input
static char	charValue(Object input)	convert an object to a char
static String	classesString(Object object)	print the simple names of a list of classes
static String	className(Object object)	null safe classname method, gets the unenhanced name
static String	classNameCollection(Object object)	null safe classname method, max out at 20
static boolean	collectionContains(Collection<Object> collection, Object object)
static <T> T	collectionPopOne(Collection<T> collection, boolean exceptionIfMoreThanOne)	Return the zero element of the list, if it exists, null if the list is empty.
static String	collectionToString(Collection collection)	convert a set to a string (comma separate)
static int	compare(Comparable first, Comparable second)	compare null safe
static String	concat(String a, String b)	concat two strings
static String	concat(String a, String b, String c)	concat strings
static String	concat(String a, String b, String c, String d)	concat strings
static String	concat(String a, String b, String c, String d, String e)	concat strings
static boolean	contains(Object[] array, Object objectToFind)	Checks if the object is in the given array.
static boolean	contains(String str, char searchChar)	Checks if String contains a search character, handling null.
static boolean	contains(String str, String searchStr)	Checks if String contains a search String, handling null.
static String	convertLongToChar(long theLong)	this method takes a long (less than 62) and converts it to a 1 character string (a-z, A-Z, 0-9)
static String	convertLongToCharSmall(long theLong)	this method takes a long (less than 36) and converts it to a 1 character string (A-Z, 0-9)
static String	convertLongToString(long theLong)	convert a long to a string by converting it to base 62 (26 lower, 26 upper, 10 digits)
static String	convertLongToStringSmall(long theLong)	convert a long to a string by converting it to base 36 (26 upper, 10 digits)
static String	convertMillisToFriendlyString(Integer duration)	convert millis to friendly string
static String	convertMillisToFriendlyString(Long duration)	convert millis to friendly string
static Long	dateLongValue(String date)	convert a string date into a long date (e.g.
static String	dateStringValue(Long theDate)	date object to a string:
static String	dateStringValue(Date date)	date object to a string:
static String	dateToString(Date date)	convert a date to a string using the standard web service pattern yyyy/MM/dd HH:mm:ss.SSS Note that HH is 0-23
static Date	dateValue(Object inputObject)	Convert an object to a java.util.Date.
static String	defaultIfBlank(String string, String defaultStringIfBlank)	return the string or the other if the first is blank
static String	defaultIfEmpty(String str, String defaultStr)	Returns either the passed in String, or if the String is empty or null, the value of defaultStr.
static <T> T	defaultIfNull(T theValue, T defaultIfTheValueIsNull)	genericized method to see if first is null, if so then return second, else first.
static String	defaultString(String str)	Returns either the passed in String, or if the String is null, an empty String ("").
static String	defaultString(String str, String defaultStr)	Returns either the passed in String, or if the String is null, the value of defaultStr.
static Double	doubleObjectValue(Object input, boolean allowNullBlank)	get the Double value of an object
static double	doubleValue(Object input)	get the double value of an object
static double	doubleValueNoError(Object input)	get the double value of an object, do not throw an exception if there is an error
static String	encryptSha(String plaintext)	encrypt a message to SHA
static boolean	equals(Object object1, Object object2)	Compares two objects for equality, where either one or both objects may be null.
static boolean	equals(String first, String second)	null safe string compare
static boolean	equalsIgnoreCase(String str1, String str2)	equalsignorecase
static String	escapeUrlDecode(String string)	unescape url chars (e.g.
static String	escapeUrlEncode(String string)	escape url chars (e.g.
static String	extensionFromName(String name)	get the extension from name.
static Float	floatObjectValue(Object input, boolean allowNullBlank)	get the Float value of an object
static float	floatValue(Object input)	get the float value of an object
static float	floatValueNoError(Object input)	get the float value of an object, do not throw an exception if there is an error
static String	formatNumberWithCommas(Long number)
static Object	get(Object arrayOrCollection, int index)	Get a specific index of an array or collection (note for collections and iterating, it is more efficient to get an iterator and iterate
static Throwable	getCause(Throwable throwable)	Introspects the Throwable to obtain the cause.
static Throwable	getCause(Throwable throwable, String[] methodNames)	Introspects the Throwable to obtain the cause.
static Stem	getFirstParentStemOfName(String name)	Returns the first existing parent stem of a given name.
static String	getFriendlyTimezoneStringForInputDescription()	Return a string that combines the standard and daylight timezones of the server into one string separated by a slash that can be used in an input description to inform the user of the server timezone.
static String	getFullStackTrace(Throwable throwable)	A way to get the entire nested stack-trace of an throwable.
static Long	getMaxLongValue(Long... values)
static Long	getMinLongValue(Long... values)
static Throwable[]	getThrowables(Throwable throwable)	Returns the list of Throwable objects in the exception chain.
static String	hostname()	Hostname of server
static char	incrementChar(char theChar)	increment a character (A-Z then 0-9)
static char[]	incrementStringInt(char[] string)	Increment a string with A-Z and 0-9 (no lower case so case insensitive apps like windows IE will still work)
static String	indent(String string, boolean failIfTypeNotFound)	this method will indent xml or json.
static int	indexOf(Object[] array, Object objectToFind)	Find the index of the given object in the array.
static int	indexOf(Object[] array, Object objectToFind, int startIndex)	Find the index of the given object in the array starting at the given index.
static Integer	intObjectValue(Object input, boolean allowNullBlank)	get the Integer value of an object
static int	intValue(Object input)	convert an object to a int
static int	intValue(Object input, int valueIfNull)	convert an object to a int
static int	intValueNoError(Object input)	get the int value of an object, do not throw an exception if there is an error
static int	ipInt(String ip)	get the ip addres integer from a string ip address
static boolean	ipOnNetwork(String ipString, String networkIpString, int mask)	see if an ip address is on a network
static boolean	ipOnNetworks(String ipString, String networkIpStrings)	see if an ip address is on a network
static int	ipReadyForAnd(int ip, int maskLength)	get the ip address after putting 1's where the subnet mask is not
static boolean	isAscii(char input)	is ascii char
static boolean	isBlank(Object input)	See if the input is null or if string, if it is empty or blank (whitespace)
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	isNestedThrowable(Throwable throwable)	Checks whether this Throwable class can store a cause.
static boolean	isNotBlank(String str)
static boolean	isScalar(Class<?> type)	see if a class is a scalar (not bean, not array or list, etc)
static boolean	isThrowableNested()	Checks if the Throwable class has a getCause method.
static Iterator	iterator(Object collection)	null safe iterator getter if the type if collection
static String	join(Object[] array)	Joins the elements of the provided array into a single String containing the provided list of elements.
static String	join(Object[] array, char separator)	Joins the elements of the provided array into a single String containing the provided list of elements.
static String	join(Object[] array, String separator)	Joins the elements of the provided array into a single String containing the provided list of elements.
static String	join(Iterator iterator, char separator)	Joins the elements of the provided Iterator into a single String containing the provided elements.
static String	join(Iterator iterator, String separator)	Joins the elements of the provided Iterator into a single String containing the provided elements.
static String	leftPad(String str, int size)	Left pad a String with spaces (' ').
static String	leftPad(String str, int size, char padChar)	Left pad a String with a specified character.
static String	leftPad(String str, int size, String padStr)	Left pad a String with a specified String.
static int	length(Object arrayOrCollection)	Null safe array length or map
static int	lengthAscii(String input)	find the length of ascii chars (non ascii are counted as two)
static <T> T	listPopOne(List<T> list)	Return the zero element of the list, if it exists, null if the list is empty.
static Long	longObjectValue(Object input, boolean allowNullBlank)	get the Long value of an object
static long	longValue(Object input)	convert an object to a long
static long	longValue(Object input, long valueIfNull)	convert an object to a long
static long	longValueNoError(Object input)	get the long value of an object, do not throw an exception if there is an error
static String	mapToString(Map map)	convert a set to a string (comma separate)
static String	MapToString(Map map)	Deprecated. use mapToString(map)
static int	monthInt(String mon)	convert a month string to an int (1 indexed).
static Object	next(Object arrayOrCollection, Iterator iterator, int index)	If array, get the element based on index, if Collection, get it based on iterator.
static <T> Collection<T>	nonNull(Collection<T> list)	make sure a collection is non null.
static <T> List<T>	nonNull(List<T> list)	make sure a list is non null.
static <K, V> Map<K,V>	nonNull(Map<K,V> map)	make sure it is non null, if null, then give new map
static <T> Set<T>	nonNull(Set<T> set)	make sure a list is non null.
static <T> T[]	nonNull(T[] array, Class<?> theClass)	make sure a array is non null.
static String	normalize(String form, String text)	take out accented chars with grouperUtil.normalize("NFD", groupAttribute).replaceAll("\\p{M}", "")
static String	normalizeEmailAddresses(String emailAddresses)	take email addresses from a textarea and turn them into semi separated
static boolean	nullOrBlank(Object object)	is an object null or blank
static long	packInts(int first, int second)	pack two ints into a long.
static String	parentStemNameFromName(String name)	get the parent stem name from name.
static String	parentStemNameFromName(String name, boolean nullForRoot)	get the parent stem name from name.
static String	prefixOrSuffix(String startString, String separator, boolean isPrefix)	get the prefix or suffix of a string based on a separator
static Object	remove(Object arrayOrCollection, int index)	Remove the iterator or index
static Object	remove(Object arrayOrCollection, Iterator iterator, int index)	Remove the iterator or index
static String	repeat(String str, int repeat)	Repeat a String repeat times to form a new String.
static void	replace(Writer outWriter, String text, Object searchFor, Object replaceWith)	replace a string or strings from a string, and put the output in a string buffer.
static void	replace(Writer outWriter, String text, Object searchFor, Object replaceWith, boolean recurse)	replace a string or strings from a string, and put the output in a string buffer
static void	replace(StringBuffer outBuffer, String text, Object searchFor, Object replaceWith)	replace a string or strings from a string, and put the output in a string buffer.
static void	replace(StringBuffer outBuffer, String text, Object searchFor, Object replaceWith, boolean recurse)	replace a string or strings from a string, and put the output in a string buffer
static String	replace(String text, Object searchFor, Object replaceWith)	replace a string or strings from a string, and put the output in a string buffer.
static String	replace(String text, Object searchFor, Object replaceWith, boolean recurse)	replace a string or strings from a string, and put the output in a string buffer
static String	replace(String text, Object searchFor, Object replaceWith, boolean recurse, boolean removeIfFound)	replace a string or strings from a string, and put the output in a string buffer
static String	replace(String text, String repl, String with)	Replaces all occurrences of a String within another String.
static String	replace(String text, String repl, String with, int max)	Replaces a String with another String inside a larger String, for the first max values of the search String.
static String	replaceWhitespaceWithSpace(String input)	replace all whitespace with space
static String	rightPad(String str, int size)	Right pad a String with spaces (' ').
static String	rightPad(String str, int size, char padChar)	Right pad a String with a specified character.
static String	rightPad(String str, int size, String padStr)	Right pad a String with a specified String.
static <T> T	setPopOne(Set<T> set)	Return the zero element of the set, if it exists, null if the list is empty.
static <T> Set<T>	setShorten(Set<T> theSet, int maxSize)	shorten a set if it is too long
static String	setToString(Set set)	convert a set to a string (comma separate)
static Short	shortObjectValue(Object input)	get the Short value of an object.
static short	shortValue(Object input)	convert an object to a short
static void	sleep(long millis)	sleep, if interrupted, throw runtime
static void	sleepWithStdoutCountdown(int seconds)
static String[]	split(String str)	Splits the provided text into an array, using whitespace as the separator.
static String[]	split(String str, char separatorChar)	Splits the provided text into an array, separator specified.
static String[]	split(String str, String separatorChars)	Splits the provided text into an array, separators specified.
static String[]	split(String str, String separatorChars, int max)	Splits the provided text into an array with a maximum length, separators specified.
static String[]	splitByWholeSeparator(String str, String separator)	Splits the provided text into an array, separator string specified.
static String[]	splitByWholeSeparator(String str, String separator, int max)	Splits the provided text into an array, separator string specified.
static String[]	splitPreserveAllTokens(String str)	Splits the provided text into an array, using whitespace as the separator, preserving all tokens, including empty tokens created by adjacent separators.
static String[]	splitPreserveAllTokens(String str, char separatorChar)	Splits the provided text into an array, separator specified, preserving all tokens, including empty tokens created by adjacent separators.
static String[]	splitPreserveAllTokens(String str, String separatorChars)	Splits the provided text into an array, separators specified, preserving all tokens, including empty tokens created by adjacent separators.
static String[]	splitPreserveAllTokens(String str, String separatorChars, int max)	Splits the provided text into an array with a maximum length, separators specified, preserving all tokens, including empty tokens created by adjacent separators.
static String[]	splitTrim(String input, String separator)	split a string based on a separator into an array, and trim each entry (see the Commons Util trim() for more details)
static String[]	splitTrim(String input, String separator, boolean treatAdjacentSeparatorsAsOne)	split a string based on a separator into an array, and trim each entry (see the Commons Util trim() for more details)
static List<String>	splitTrimCommas(String input, String commaSeparatedAttributes, String regexAllowedChars, String replaceChar)	split by commas.
static List<String>	splitTrimCurlyColons(String input, String commaSeparatedAttributes, String regexAllowedChars, String replaceChar)	split by curly colons.
static List<String>	splitTrimToList(String input, String separator)	split a string based on a separator into an array, and trim each entry (see the Commons Util trim() for more details)
static Set<String>	splitTrimToSet(String input, String separator)	split a string based on a separator into an array, and trim each entry (see the Commons Util trim() for more details)
static int	stringLength(String string)	string length
static Date	stringToDate(String dateString)	convert a string to a date using the standard web service pattern Note that HH is 0-23
static Date	stringToDate2(String input)	take as input: yyyy/mm/dd yyyy-mm-dd dd-mon-yyyy yyyy/mm/dd hh:mm:ss dd-mon-yyyy hh:mm:ss yyyy/mm/dd hh:mm:ss.SSS dd-mon-yyyy hh:mm:ss.SSS
static Timestamp	stringToTimestamp(String input)	convert a string to timestamp based on the following formats: yyyyMMdd yyyy/MM/dd yyyy/MM/dd HH:mm:ss yyyy/MM/dd HH:mm:ss.SSS yyyy/MM/dd HH:mm:ss.SSSSSS
static String	stringValue(Object input)	convert an object to a string
static String	stringValue(Date date)	convert a date to the standard string yyyymmdd
static String	stripEnd(String str, String stripChars)	Strips any of a set of characters from the end of a String.
static String	stripLastSlashIfExists(String input)	strip the last slash (/ or \) from a string if it exists
static String	stripStart(String str, String stripChars)	Strips any of a set of characters from the start of a String.
static String	stripSuffix(String string, String suffix)	strip the suffix off
static boolean	subjectHasAttribute(Subject subject, String attributeName)	see if a subject has an attribute
static String	subjectToString(Subject subject)	convert a subject to string safely
static String	substringAfter(String str, String separator)	Gets the substring after the first occurrence of a separator.
static String	substringAfterLast(String str, String separator)	Gets the substring after the last occurrence of a separator.
static String	substringBefore(String str, String separator)	Gets the substring before the first occurrence of a separator.
static String	substringBeforeLast(String str, String separator)	Gets the substring before the last occurrence of a separator.
static String	suffixAfterChar(String input, char theChar)	return the suffix after a char.
static String	timestampToFileString(Date timestamp)	Convert a timestamp into a string: yyyy/MM/dd HH:mm:ss.SSS
static String	timestampToString(Date timestamp)	Convert a timestamp into a string: yyyy/MM/dd HH:mm:ss.SSS
static Object	toArray(Object objectOrArrayOrCollection)	Convert a list to an array with the type of the first element e.g.
static <T> T[]	toArray(Collection collection, Class<T> theClass)	convert a list into an array of type of theClass
static <T> List<T>	toList(T... objects)	return a list of objects from varargs.
static List<Object>	toListObject(Object... objects)	return a list of objects from varargs.
static String	toLowerCase(String input)	null safe to lower method
static Map<String,String>	toMap(String... strings)	turn some strings into a map
static <T> Set<T>	toSet(T... objects)	return a set of objects from varargs.
static <T> Set<T>	toSetObject(T object)	return a set of string
static String	toString(Collection<Source> sources)	convert a collection of sources to a string
static String	toStringForLog(Object object)	print out various types of objects
static String	toStringForLog(Object object, int maxChars)	print out various types of objects
static Map<String,Object>	toStringObjectMap(Object... stringObjects)	turn some strings into a map
static String	toStringSafe(Object object)	fail safe toString for Exception blocks, and include the stack if there is a problem with toString()
static Timestamp	toTimestamp(Object input)	Convert a string or object to a timestamp (could be string, date, timestamp, etc) yyyymmdd or yyyy/MM/dd or yyyy/MM/dd HH:mm:ss or yyyy/MM/dd HH:mm:ss.SSS or yyyy/MM/dd HH:mm:ss.SSSSSS
static String	toUpperCase(String input)	null safe to upper method
static String	trim(String str)	trim whitespace from string
static String	trimToEmpty(String str)	trim to empty, convert null to empty
static String	truncateAscii(String input, int requiredLength)	find the length of ascii chars (non ascii are counted as two)
static Class	unenhanceClass(Class theClass)	if a class is enhanced, get the unenhanced version
static String	uniqueId()	get a unique string identifier based on the current time, this is not globally unique, just unique for as long as this server is running...
static int	unpackInt(long theLong, boolean isFirst)	take a long
static boolean	validEmail(String email)
static String	xmlEscape(String input)	Convert an XML string to HTML to display on the screen
static String	xmlEscape(String input, boolean isEscape)	Convert an XML string to HTML to display on the screen

Methods inherited from class java.lang.Object

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

Field Details

LOG_ERROR

public static final String LOG_ERROR

See Also:

• Constant Field Values

ONE_KB

public static final long ONE_KB

The number of bytes in a kilobyte.

See Also:

• Constant Field Values

ONE_MB

public static final long ONE_MB

The number of bytes in a megabyte.

See Also:

• Constant Field Values

ONE_GB

public static final long ONE_GB

The number of bytes in a gigabyte.

See Also:

• Constant Field Values

DATE_FORMAT

public static final String DATE_FORMAT

string format of dates

See Also:

• Constant Field Values

TIMESTAMP_FILE_FORMAT

public static final String TIMESTAMP_FILE_FORMAT

string format of dates for file names

See Also:

• Constant Field Values

DATE_FORMAT2

public static final String DATE_FORMAT2

string format of dates

See Also:

• Constant Field Values

DATE_MINUTES_SECONDS_FORMAT

public static final String DATE_MINUTES_SECONDS_FORMAT

format including minutes and seconds: yyyy/MM/dd HH:mm:ss

See Also:

• Constant Field Values

DATE_MINUTES_SECONDS_NO_SLASH_FORMAT

public static final String DATE_MINUTES_SECONDS_NO_SLASH_FORMAT

format including minutes and seconds: yyyyMMdd HH:mm:ss

See Also:

• Constant Field Values

TIMESTAMP_FORMAT

public static final String TIMESTAMP_FORMAT

format on screen of config for milestone: yyyy/MM/dd HH:mm:ss.SSS

See Also:

• Constant Field Values

TIMESTAMP_NO_SLASH_FORMAT

public static final String TIMESTAMP_NO_SLASH_FORMAT

format on screen of config for milestone: yyyyMMdd HH:mm:ss.SSS

See Also:

• Constant Field Values

NOT_FOUND

public static final int NOT_FOUND

special number when a number is not found

See Also:

• Constant Field Values

DEFAULT_BUFFER_SIZE

public static final int DEFAULT_BUFFER_SIZE

The name says it all.

See Also:

• Constant Field Values

EMPTY_STRING_ARRAY

public static final String[] EMPTY_STRING_ARRAY

An empty immutable String array.

EMPTY_OBJECT_ARRAY

public static final Object[] EMPTY_OBJECT_ARRAY

An empty immutable Object array.

EMPTY

public static final String EMPTY

The empty String "".

Since:

2.0

See Also:

• Constant Field Values

INDEX_NOT_FOUND

public static final int INDEX_NOT_FOUND

Represents a failed index search.

Since:

2.1

See Also:

• Constant Field Values

Constructor Details

GrouperUtilElSafe

public GrouperUtilElSafe()

Method Details

collectionContains

public static boolean collectionContains(Collection<Object> collection,
 Object object)

Parameters:

collection -

object -

Returns:

true if the collection contains this object

normalize

public static String normalize(String form,
 String text)

take out accented chars with grouperUtil.normalize("NFD", groupAttribute).replaceAll("\\p{M}", "")

Parameters:

form -

text -

Returns:

the normalized string

toUpperCase

public static String toUpperCase(String input)

null safe to upper method

Parameters:

input -

Returns:

upper

toLowerCase

public static String toLowerCase(String input)

null safe to lower method

Parameters:

input -

Returns:

lower

normalizeEmailAddresses

public static String normalizeEmailAddresses(String emailAddresses)

take email addresses from a textarea and turn them into semi separated

Parameters:

emailAddresses - can be whitespace, comma, or semi separated

Returns:

the email addresses semi separated

validEmail

public static boolean validEmail(String email)

Parameters:

email -

Returns:

true if valid, false if not

subjectHasAttribute

public static boolean subjectHasAttribute(Subject subject,
 String attributeName)

see if a subject has an attribute

Parameters:

subject -

attributeName -

Returns:

true if the subject has an attribute

setShorten

public static <T> Set<T> setShorten(Set<T> theSet,
 int maxSize)

shorten a set if it is too long

Type Parameters:

T -

Parameters:

theSet -

maxSize -

Returns:

the new set

formatNumberWithCommas

public static String formatNumberWithCommas(Long number)

Parameters:

number - e.g. 12345678

Returns:

the string, e.g. 12,345,678

compare

public static int compare(Comparable first,
 Comparable second)

compare null safe

Parameters:

first -

second -

Returns:

0 for equal, 1 for greater, -1 for less

toMap

public static Map<String,String> toMap(String... strings)

turn some strings into a map

Parameters:

strings -

Returns:

the map (never null)

toStringObjectMap

public static Map<String,Object> toStringObjectMap(Object... stringObjects)

turn some strings into a map

Parameters:

stringObjects - is an array of String,Object,String,Object etc where the Strings are the key, and the Object is the value

Returns:

the map (never null)

convertMillisToFriendlyString

public static String convertMillisToFriendlyString(Integer duration)

convert millis to friendly string

Parameters:

duration -

Returns:

the friendly string

convertMillisToFriendlyString

public static String convertMillisToFriendlyString(Long duration)

convert millis to friendly string

Parameters:

duration -

Returns:

the friendly string

argAfter

public static String argAfter(String[] args,
 String argBefore)

return the arg after the argBefore, or null if not there, or exception if argBefore is not found

Parameters:

args -

argBefore -

Returns:

the arg

append

public static void append(StringBuilder result,
 String separatorIfResultNotEmpty,
 String stringToAppend)

append and maybe put a separator in there

Parameters:

result -

separatorIfResultNotEmpty -

stringToAppend -

byteCountToDisplaySize

public static String byteCountToDisplaySize(long size)

Returns a human-readable version of the file size (original is in bytes).

Parameters:

size - The number of bytes.

Returns:

A human-readable display value (includes units).

suffixAfterChar

public static String suffixAfterChar(String input,
 char theChar)

return the suffix after a char. If the char doesnt exist, just return the string

Parameters:

input - string

theChar - char

Returns:

new string

sleep

public static void sleep(long millis)

sleep, if interrupted, throw runtime

Parameters:

millis -

sleepWithStdoutCountdown

public static void sleepWithStdoutCountdown(int seconds)

Parameters:

seconds -

encryptSha

public static String encryptSha(String plaintext)

encrypt a message to SHA

Parameters:

plaintext -

Returns:

the hash

uniqueId

public static String uniqueId()

get a unique string identifier based on the current time, this is not globally unique, just unique for as long as this server is running...

Returns:

String

nonNull

public static <T> T[] nonNull(T[] array,
 Class<?> theClass)

make sure a array is non null. If null, then return an empty array.

Type Parameters:

T -

Parameters:

array -

theClass - to make array from

Returns:

the list or empty list if null

stripSuffix

public static String stripSuffix(String string,
 String suffix)

strip the suffix off

Parameters:

string -

suffix -

Returns:

the string without the suffix

prefixOrSuffix

public static String prefixOrSuffix(String startString,
 String separator,
 boolean isPrefix)

get the prefix or suffix of a string based on a separator

Parameters:

startString - is the string to start with

separator - is the separator to split on

isPrefix - if thre prefix or suffix should be returned

Returns:

the prefix or suffix, if the separator isnt there, return the original string

indent

public static String indent(String string,
 boolean failIfTypeNotFound)

 this method will indent xml or json.
 this is for logging or documentations purposes only and should
 not be used for a production use (since it is not 100% tested
 or compliant with all constructs like xml CDATA
 
 For xml, assumes elements either have text or sub elements, not both.
 No cdata, nothing fancy.
 
 If the input is <a><b><c>hey</c><d><e>there</e></d></b></a>
 It would output:
 <a>
   <b>
     <c>hey</c>
     <d>
       <e>there</e>
     </d>
   </b>
 </a>
 
 For , if the input is: {"a":{"b\"b":{"c\\":"d"},"e":"f","g":["h":"i"]}}
 It would output:
 {
   "a":{
     "b\"b":{
       "c\\":"d"
     },
     "e":"f",
     "g":[
       "h":"i"
     ]
   }
 }
 
 
 

Parameters:

string -

failIfTypeNotFound -

Returns:

the indented string, 2 spaces per line

extensionFromName

public static String extensionFromName(String name)

get the extension from name. if name is a:b:c, name is c

Parameters:

name -

Returns:

the name

parentStemNameFromName

public static String parentStemNameFromName(String name)

get the parent stem name from name. if already a root stem then just return null. e.g. if the name is a:b:c then the return value is a:b

Parameters:

name -

Returns:

the parent stem name or null if none

parentStemNameFromName

public static String parentStemNameFromName(String name,
 boolean nullForRoot)

get the parent stem name from name. if already a root stem then just return null. e.g. if the name is a:b:c then the return value is a:b

Parameters:

name -

nullForRoot - null for root, otherwise colon

Returns:

the parent stem name or null if none

defaultIfBlank

public static String defaultIfBlank(String string,
 String defaultStringIfBlank)

return the string or the other if the first is blank

Parameters:

string -

defaultStringIfBlank -

Returns:

the string or the default one

defaultIfNull

public static <T> T defaultIfNull(T theValue,
 T defaultIfTheValueIsNull)

genericized method to see if first is null, if so then return second, else first.

Type Parameters:

T -

Parameters:

theValue - first input

defaultIfTheValueIsNull - second input

Returns:

the first if not null, second if no

addIfNotThere

public static <T> void addIfNotThere(Collection<T> list,
 Collection<T> listToAdd)

add each element of listToAdd if it is not already in list

Type Parameters:

T -

Parameters:

list - to add to

listToAdd - each element will be added to list, or null if none

collectionToString

public static String collectionToString(Collection collection)

convert a set to a string (comma separate)

Parameters:

collection -

Returns:

the String

setToString

public static String setToString(Set set)

convert a set to a string (comma separate)

Parameters:

set -

Returns:

the String

MapToString

@Deprecated
public static String MapToString(Map map)

Deprecated.

use mapToString(map)

convert a set to a string (comma separate)

Parameters:

map -

Returns:

the String

mapToString

public static String mapToString(Map map)

convert a set to a string (comma separate)

Parameters:

map -

Returns:

the String

toStringForLog

public static String toStringForLog(Object object)

print out various types of objects

Parameters:

object -

Returns:

the string value

toStringForLog

public static String toStringForLog(Object object,
 int maxChars)

print out various types of objects

Parameters:

object -

maxChars - is the max chars that should be returned (abbreviate if longer), or -1 for any amount

Returns:

the string value

batchNumberOfBatches

public static int batchNumberOfBatches(int count,
 int batchSize,
 boolean haveAtLeastOne)

If batching this is the number of batches

Parameters:

count - is size of set

batchSize -

haveAtLeastOne - is true if there should be at least one run even if the collection is empty (e.g. for queries based on other things)

Returns:

the number of batches

batchNumberOfBatches

@Deprecated
public static int batchNumberOfBatches(int count,
 int batchSize)

Deprecated.

use batchNumberOfBatches(Collection<?> collection, int batchSize, boolean haveAtLeastOne)

If batching this is the number of batches. Will return at least 1

Parameters:

count - is size of set

batchSize -

Returns:

the number of batches

batchNumberOfBatches

@Deprecated
public static int batchNumberOfBatches(Collection<?> collection,
 int batchSize)

Deprecated.

use batchNumberOfBatches(Collection<?> collection, int batchSize, boolean haveAtLeastOne)

If batching this is the number of batches, will return at least 1

Parameters:

collection -

batchSize -

Returns:

the number of batches

batchNumberOfBatches

public static int batchNumberOfBatches(Collection<?> collection,
 int batchSize,
 boolean haveAtLeastOne)

If batching this is the number of batches, will return at least 1

Parameters:

collection -

batchSize -

haveAtLeastOne - is true if there should be at least one run even if the collection is empty (e.g. for queries based on other things)

Returns:

the number of batches

batchList

public static <T> List<T> batchList(Collection<T> collection,
 int batchSize,
 int batchIndex)

retrieve a batch by 0 index. Will return an array of size batchSize or the remainder. the array will be full of elements. Note, this requires an ordered input (so use linkedhashset not hashset if doing sets)

Type Parameters:

T - template type

Parameters:

collection -

batchSize -

batchIndex -

Returns:

the list This never returns null, only empty list

splitTrim

public static String[] splitTrim(String input,
 String separator)

split a string based on a separator into an array, and trim each entry (see the Commons Util trim() for more details)

Parameters:

input - is the delimited input to split and trim

separator - is what to split on

Returns:

the array of items after split and trimmed, or null if input is null. will be trimmed to empty

splitTrimToList

public static List<String> splitTrimToList(String input,
 String separator)

split a string based on a separator into an array, and trim each entry (see the Commons Util trim() for more details)

Parameters:

input - is the delimited input to split and trim

separator - is what to split on

Returns:

the list of items after split and trimmed, or null if input is null. will be trimmed to empty

splitTrimToSet

public static Set<String> splitTrimToSet(String input,
 String separator)

split a string based on a separator into an array, and trim each entry (see the Commons Util trim() for more details)

Parameters:

input - is the delimited input to split and trim

separator - is what to split on

Returns:

the set of items after split and trimmed, or null if input is null. will be trimmed to empty

splitTrim

public static String[] splitTrim(String input,
 String separator,
 boolean treatAdjacentSeparatorsAsOne)

split a string based on a separator into an array, and trim each entry (see the Commons Util trim() for more details)

Parameters:

input - is the delimited input to split and trim

separator - is what to split on

treatAdjacentSeparatorsAsOne -

Returns:

the array of items after split and trimmed, or null if input is null. will be trimmed to empty

escapeUrlEncode

public static String escapeUrlEncode(String string)

escape url chars (e.g. a # is %23)

Parameters:

string - input

Returns:

the encoded string

escapeUrlDecode

public static String escapeUrlDecode(String string)

unescape url chars (e.g. a space is %20)

Parameters:

string - input

Returns:

the encoded string

nonNull

public static <T> List<T> nonNull(List<T> list)

make sure a list is non null. If null, then return an empty list

Type Parameters:

T -

Parameters:

list -

Returns:

the list or empty list if null

nonNull

public static <T> Collection<T> nonNull(Collection<T> list)

make sure a collection is non null. If null, then return an empty list

Type Parameters:

T -

Parameters:

list -

Returns:

the list or empty list if null

nonNull

public static <T> Set<T> nonNull(Set<T> set)

make sure a list is non null. If null, then return an empty set

Type Parameters:

T -

Parameters:

set -

Returns:

the set or empty set if null

nonNull

public static <K,
V> Map<K,V> nonNull(Map<K,V> map)

make sure it is non null, if null, then give new map

Type Parameters:

K - key of map

V - value of map

Parameters:

map - is map

Returns:

set non null

toList

public static <T> List<T> toList(T... objects)

return a list of objects from varargs. Though if there is one object, and it is a list, return it.

Type Parameters:

T - template type of the objects

Parameters:

objects -

Returns:

the list or null if objects is null

toListObject

public static List<Object> toListObject(Object... objects)

return a list of objects from varargs. Though if there is one object, and it is a list, return it.

Type Parameters:

T - template type of the objects

Parameters:

objects -

Returns:

the list or null if objects is null

toSet

public static <T> Set<T> toSet(T... objects)

return a set of objects from varargs.

Type Parameters:

T - template type of the objects

Parameters:

objects -

Returns:

the set

toSetObject

public static <T> Set<T> toSetObject(T object)

return a set of string

Type Parameters:

T - template type of the objects

Parameters:

object -

Returns:

the set

assertion

public static void assertion(boolean isTrue,
 String reason)

If false, throw an assertException, and give a reason

Parameters:

isTrue -

reason -

iterator

public static Iterator iterator(Object collection)

null safe iterator getter if the type if collection

Parameters:

collection -

Returns:

the iterator

length

public static int length(Object arrayOrCollection)

Null safe array length or map

Parameters:

arrayOrCollection -

Returns:

the length of the array (0 for null)

next

public static Object next(Object arrayOrCollection,
 Iterator iterator,
 int index)

If array, get the element based on index, if Collection, get it based on iterator.

Parameters:

arrayOrCollection -

iterator -

index -

Returns:

the object

remove

public static Object remove(Object arrayOrCollection,
 int index)

Remove the iterator or index

Parameters:

arrayOrCollection -

index -

Returns:

the object list or new array

remove

public static Object remove(Object arrayOrCollection,
 Iterator iterator,
 int index)

Remove the iterator or index

Parameters:

arrayOrCollection -

iterator -

index -

Returns:

the object list or new array

classesString

public static String classesString(Object object)

print the simple names of a list of classes

Parameters:

object -

Returns:

the simple names

classNameCollection

public static String classNameCollection(Object object)

null safe classname method, max out at 20

Parameters:

object -

Returns:

the classname

className

public static String className(Object object)

null safe classname method, gets the unenhanced name

Parameters:

object -

Returns:

the classname

toArray

public static Object toArray(Object objectOrArrayOrCollection)

Convert a list to an array with the type of the first element e.g. if it is a list of Person objects, then the array is Person[]

Parameters:

objectOrArrayOrCollection - is a list

Returns:

the array of objects with type of the first element in the list

toArray

public static <T> T[] toArray(Collection collection,
 Class<T> theClass)

convert a list into an array of type of theClass

Type Parameters:

T - is the type of the array

Parameters:

collection - list to convert

theClass - type of array to return

Returns:

array of type theClass[] filled with the objects from list

replace

public static String replace(String text,
 Object searchFor,
 Object replaceWith)

replace a string or strings from a string, and put the output in a string buffer. This does not recurse

Parameters:

text - string to look in

searchFor - string array to search for

replaceWith - string array to replace with

Returns:

the string

replace

public static String replace(String text,
 Object searchFor,
 Object replaceWith,
 boolean recurse)

replace a string or strings from a string, and put the output in a string buffer

Parameters:

text - string to look in

searchFor - string array to search for

replaceWith - string array to replace with

recurse - if true then do multiple replaces (on the replacements)

Returns:

the string

replace

public static String replace(String text,
 Object searchFor,
 Object replaceWith,
 boolean recurse,
 boolean removeIfFound)

replace a string or strings from a string, and put the output in a string buffer

Parameters:

text - string to look in

searchFor - string array to search for

replaceWith - string array to replace with

recurse - if true then do multiple replaces (on the replacements)

removeIfFound - true if removing from searchFor and replaceWith if found

Returns:

the string

replace

public static String replace(String text,
 String repl,
 String with)

Replaces all occurrences of a String within another String.

A null reference passed to this method is a no-op.

 replace(null, *, *)        = null
 replace("", *, *)          = ""
 replace("any", null, *)    = "any"
 replace("any", *, null)    = "any"
 replace("any", "", *)      = "any"
 replace("aba", "a", null)  = "aba"
 replace("aba", "a", "")    = "b"
 replace("aba", "a", "z")   = "zbz"
 

Parameters:

text - text to search and replace in, may be null

repl - the String to search for, may be null

with - the String to replace with, may be null

Returns:

the text with any replacements processed, null if null String input

See Also:

• replace(String text, String repl, String with, int max)

replace

public static String replace(String text,
 String repl,
 String with,
 int max)

Replaces a String with another String inside a larger String, for the first max values of the search String.

A null reference passed to this method is a no-op.

 replace(null, *, *, *)         = null
 replace("", *, *, *)           = ""
 replace("any", null, *, *)     = "any"
 replace("any", *, null, *)     = "any"
 replace("any", "", *, *)       = "any"
 replace("any", *, *, 0)        = "any"
 replace("abaa", "a", null, -1) = "abaa"
 replace("abaa", "a", "", -1)   = "b"
 replace("abaa", "a", "z", 0)   = "abaa"
 replace("abaa", "a", "z", 1)   = "zbaa"
 replace("abaa", "a", "z", 2)   = "zbza"
 replace("abaa", "a", "z", -1)  = "zbzz"
 

Parameters:

text - text to search and replace in, may be null

repl - the String to search for, may be null

with - the String to replace with, may be null

max - maximum number of values to replace, or -1 if no maximum

Returns:

the text with any replacements processed, null if null String input

isEmpty

public static boolean isEmpty(String str)

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

 isEmpty(null)      = true
 isEmpty("")        = true
 isEmpty(" ")       = false
 isEmpty("bob")     = false
 isEmpty("  bob  ") = false
 

NOTE: This method changed in Lang version 2.0. It no longer trims the String. That functionality is available in isBlank().

Parameters:

str - the String to check, may be null

Returns:

true if the String is empty or null

replace

public static void replace(StringBuffer outBuffer,
 String text,
 Object searchFor,
 Object replaceWith)

replace a string or strings from a string, and put the output in a string buffer. This does not recurse

Parameters:

outBuffer - stringbuffer to write to

text - string to look in

searchFor - string array to search for

replaceWith - string array to replace with

replace

public static void replace(StringBuffer outBuffer,
 String text,
 Object searchFor,
 Object replaceWith,
 boolean recurse)

replace a string or strings from a string, and put the output in a string buffer

Parameters:

outBuffer - stringbuffer to write to

text - string to look in

searchFor - string array to search for

replaceWith - string array to replace with

recurse - if true then do multiple replaces (on the replacements)

replace

public static void replace(Writer outWriter,
 String text,
 Object searchFor,
 Object replaceWith)

replace a string or strings from a string, and put the output in a string buffer. This does not recurse

Parameters:

outWriter - writer to write to

text - string to look in

searchFor - string array to search for

replaceWith - string array to replace with

replace

public static void replace(Writer outWriter,
 String text,
 Object searchFor,
 Object replaceWith,
 boolean recurse)

replace a string or strings from a string, and put the output in a string buffer

Parameters:

outWriter - writer to write to

text - string to look in

searchFor - string array to search for

replaceWith - string array to replace with

recurse - if true then do multiple replaces (on the replacements)

packInts

public static long packInts(int first,
 int second)

pack two ints into a long. Note: the first is held in the left bits, the second is held in the right bits

Parameters:

first - is first int

second - is second int

Returns:

the long which has two ints in there

unpackInt

public static int unpackInt(long theLong,
 boolean isFirst)

take a long

Parameters:

theLong - to unpack

isFirst - true for first, false for second

Returns:

one of the packed ints, first or second

toString

public static String toString(Collection<Source> sources)

convert a collection of sources to a string

Parameters:

sources -

Returns:

the string

toStringSafe

public static String toStringSafe(Object object)

fail safe toString for Exception blocks, and include the stack if there is a problem with toString()

Parameters:

object -

Returns:

the toStringSafe string

booleanValue

public static boolean booleanValue(Object object)

get the boolean value for an object, cant be null or blank

Parameters:

object -

Returns:

the boolean

booleanValue

public static boolean booleanValue(Object object,
 boolean defaultBoolean)

get the boolean value for an object

Parameters:

object -

defaultBoolean - if object is null or empty

Returns:

the boolean

booleanObjectValue

public static Boolean booleanObjectValue(Object object)

get the Boolean value for an object

Parameters:

object -

Returns:

the Boolean or null if null or empty

nullOrBlank

public static boolean nullOrBlank(Object object)

is an object null or blank

Parameters:

object -

Returns:

true if null or blank

dateLongValue

public static Long dateLongValue(String date)

convert a string date into a long date (e.g. for xml export)

Parameters:

date -

Returns:

the long or null if the date was null or blank

dateStringValue

public static String dateStringValue(Date date)

date object to a string:

Parameters:

date -

Returns:

the long or null if the date was null or blank

dateStringValue

public static String dateStringValue(Long theDate)

date object to a string:

Parameters:

theDate -

Returns:

the long or null if the date was null or blank

dateValue

public static Date dateValue(Object inputObject)

 Convert an object to a java.util.Date.  allows, dates, null, blank, 
 yyyymmdd or yyyymmdd hh24:mm:ss
 or yyyy/MM/dd HH:mm:ss.SSS
 

Parameters:

inputObject - is the String or Date to convert

Returns:

the Date

stringToDate2

public static Date stringToDate2(String input)

take as input: yyyy/mm/dd yyyy-mm-dd dd-mon-yyyy yyyy/mm/dd hh:mm:ss dd-mon-yyyy hh:mm:ss yyyy/mm/dd hh:mm:ss.SSS dd-mon-yyyy hh:mm:ss.SSS

Parameters:

input -

Returns:

the date

monthInt

public static int monthInt(String mon)

convert a month string to an int (1 indexed). e.g. if input is feb or Feb or february or February return 2

Parameters:

mon -

Returns:

the month

isBlank

public static boolean isBlank(Object input)

See if the input is null or if string, if it is empty or blank (whitespace)

Parameters:

input -

Returns:

true if blank

isScalar

public static boolean isScalar(Class<?> type)

see if a class is a scalar (not bean, not array or list, etc)

Parameters:

type -

Returns:

true if scalar

toTimestamp

public static Timestamp toTimestamp(Object input)

 Convert a string or object to a timestamp (could be string, date, timestamp, etc)
 yyyymmdd
 or 
 yyyy/MM/dd
 or
 yyyy/MM/dd HH:mm:ss
 or
 yyyy/MM/dd HH:mm:ss.SSS
 or
 yyyy/MM/dd HH:mm:ss.SSSSSS
 
 

Parameters:

input -

Returns:

the timestamp

Throws:

RuntimeException - if invalid format

stringValue

public static String stringValue(Object input)

convert an object to a string

Parameters:

input - is the object to convert

Returns:

the String conversion of the object

timestampToString

public static String timestampToString(Date timestamp)

Convert a timestamp into a string: yyyy/MM/dd HH:mm:ss.SSS

Parameters:

timestamp -

Returns:

the string representation

timestampToFileString

public static String timestampToFileString(Date timestamp)

Convert a timestamp into a string: yyyy/MM/dd HH:mm:ss.SSS

Parameters:

timestamp -

Returns:

the string representation

stringValue

public static String stringValue(Date date)

convert a date to the standard string yyyymmdd

Parameters:

date -

Returns:

the string value

stringToTimestamp

public static Timestamp stringToTimestamp(String input)

convert a string to timestamp based on the following formats:
 yyyyMMdd
 yyyy/MM/dd
 yyyy/MM/dd HH:mm:ss
 yyyy/MM/dd HH:mm:ss.SSS
 yyyy/MM/dd HH:mm:ss.SSSSSS
 

Parameters:

input -

Returns:

the timestamp object

bigDecimalObjectValue

public static BigDecimal bigDecimalObjectValue(Object input)

Convert an object to a byte, allow nulls

Parameters:

input -

Returns:

the boolean object value

byteObjectValue

public static Byte byteObjectValue(Object input)

Convert an object to a byte, allow nulls

Parameters:

input -

Returns:

the boolean object value

byteValue

public static byte byteValue(Object input)

convert an object to a byte

Parameters:

input -

Returns:

the byte

doubleObjectValue

public static Double doubleObjectValue(Object input,
 boolean allowNullBlank)

get the Double value of an object

Parameters:

input - is a number or String

allowNullBlank - used to default to false, if true, return null if nul inputted

Returns:

the Double equivalent

doubleValue

public static double doubleValue(Object input)

get the double value of an object

Parameters:

input - is a number or String

Returns:

the double equivalent

doubleValueNoError

public static double doubleValueNoError(Object input)

get the double value of an object, do not throw an exception if there is an error

Parameters:

input - is a number or String

Returns:

the double equivalent

floatObjectValue

public static Float floatObjectValue(Object input,
 boolean allowNullBlank)

get the Float value of an object

Parameters:

input - is a number or String

allowNullBlank - true if allow null or blank

Returns:

the Float equivalent

floatValue

public static float floatValue(Object input)

get the float value of an object

Parameters:

input - is a number or String

Returns:

the float equivalent

floatValueNoError

public static float floatValueNoError(Object input)

get the float value of an object, do not throw an exception if there is an error

Parameters:

input - is a number or String

Returns:

the float equivalent

intObjectValue

public static Integer intObjectValue(Object input,
 boolean allowNullBlank)

get the Integer value of an object

Parameters:

input - is a number or String

allowNullBlank - true if convert null or blank to null

Returns:

the Integer equivalent

intValue

public static int intValue(Object input)

convert an object to a int

Parameters:

input -

Returns:

the number

intValue

public static int intValue(Object input,
 int valueIfNull)

convert an object to a int

Parameters:

input -

valueIfNull - is if the input is null or empty, return this value

Returns:

the number

intValueNoError

public static int intValueNoError(Object input)

get the int value of an object, do not throw an exception if there is an error

Parameters:

input - is a number or String

Returns:

the int equivalent

longObjectValue

public static Long longObjectValue(Object input,
 boolean allowNullBlank)

get the Long value of an object

Parameters:

input - is a number or String

allowNullBlank - true if null or blank converts to null

Returns:

the Long equivalent

longValue

public static long longValue(Object input)

convert an object to a long

Parameters:

input -

Returns:

the number

longValue

public static long longValue(Object input,
 long valueIfNull)

convert an object to a long

Parameters:

input -

valueIfNull - is if the input is null or empty, return this value

Returns:

the number

longValueNoError

public static long longValueNoError(Object input)

get the long value of an object, do not throw an exception if there is an error

Parameters:

input - is a number or String

Returns:

the long equivalent

shortObjectValue

public static Short shortObjectValue(Object input)

get the Short value of an object. converts null or blank to null

Parameters:

input - is a number or String

Returns:

the Long equivalent

shortValue

public static short shortValue(Object input)

convert an object to a short

Parameters:

input -

Returns:

the number

charObjectValue

public static Character charObjectValue(Object input)

get the Character wrapper value for the input

Parameters:

input - allow null, return null

Returns:

the Character object wrapper

charValue

public static char charValue(Object input)

convert an object to a char

Parameters:

input -

Returns:

the number

replaceWhitespaceWithSpace

public static String replaceWhitespaceWithSpace(String input)

replace all whitespace with space

Parameters:

input -

Returns:

the string

convertLongToChar

public static String convertLongToChar(long theLong)

this method takes a long (less than 62) and converts it to a 1 character string (a-z, A-Z, 0-9)

Parameters:

theLong - is the long (less than 62) to convert to a 1 character string

Returns:

a one character string

convertLongToCharSmall

public static String convertLongToCharSmall(long theLong)

this method takes a long (less than 36) and converts it to a 1 character string (A-Z, 0-9)

Parameters:

theLong - is the long (less than 36) to convert to a 1 character string

Returns:

a one character string

convertLongToString

public static String convertLongToString(long theLong)

convert a long to a string by converting it to base 62 (26 lower, 26 upper, 10 digits)

Parameters:

theLong - is the long to convert

Returns:

the String conversion of this

convertLongToStringSmall

public static String convertLongToStringSmall(long theLong)

convert a long to a string by converting it to base 36 (26 upper, 10 digits)

Parameters:

theLong - is the long to convert

Returns:

the String conversion of this

incrementChar

public static char incrementChar(char theChar)

increment a character (A-Z then 0-9)

Parameters:

theChar -

Returns:

the value

incrementStringInt

public static char[] incrementStringInt(char[] string)

Increment a string with A-Z and 0-9 (no lower case so case insensitive apps like windows IE will still work)

Parameters:

string -

Returns:

the value

isAscii

public static boolean isAscii(char input)

is ascii char

Parameters:

input -

Returns:

true if ascii

lengthAscii

public static int lengthAscii(String input)

find the length of ascii chars (non ascii are counted as two)

Parameters:

input -

Returns:

the length of ascii chars

stringLength

public static int stringLength(String string)

string length

Parameters:

string -

Returns:

string length

truncateAscii

public static String truncateAscii(String input,
 int requiredLength)

find the length of ascii chars (non ascii are counted as two)

Parameters:

input - is the string to operate on

requiredLength - length we need the string to be

Returns:

the length of ascii chars

subjectToString

public static String subjectToString(Subject subject)

convert a subject to string safely

Parameters:

subject -

Returns:

the string value of subject (might be null)

equals

public static boolean equals(String first,
 String second)

null safe string compare

Parameters:

first -

second -

Returns:

true if equal

isBlank

public static boolean isBlank(String str)

Checks if a String is whitespace, empty ("") or null.

 isBlank(null)      = true
 isBlank("")        = true
 isBlank(" ")       = true
 isBlank("bob")     = false
 isBlank("  bob  ") = false
 

Parameters:

str - the String to check, may be null

Returns:

true if the String is null, empty or whitespace

Since:

2.0

isNotBlank

public static boolean isNotBlank(String str)

Parameters:

str -

Returns:

true if not blank

trim

public static String trim(String str)

trim whitespace from string

Parameters:

str -

Returns:

trimmed string

equalsIgnoreCase

public static boolean equalsIgnoreCase(String str1,
 String str2)

equalsignorecase

Parameters:

str1 -

str2 -

Returns:

true if the strings are equal ignore case

trimToEmpty

public static String trimToEmpty(String str)

trim to empty, convert null to empty

Parameters:

str -

Returns:

trimmed

abbreviate

public static String abbreviate(String str,
 int maxWidth)

Abbreviates a String using ellipses. This will turn "Now is the time for all good men" into "Now is the time for..."

Specifically:

• If str is less than maxWidth characters long, return it.
• Else abbreviate it to (substring(str, 0, max-3) + "...").
• If maxWidth is less than 4, throw an IllegalArgumentException.
• In no case will it return a String of length greater than maxWidth.

 StringUtils.abbreviate(null, *)      = null
 StringUtils.abbreviate("", 4)        = ""
 StringUtils.abbreviate("abcdefg", 6) = "abc..."
 StringUtils.abbreviate("abcdefg", 7) = "abcdefg"
 StringUtils.abbreviate("abcdefg", 8) = "abcdefg"
 StringUtils.abbreviate("abcdefg", 4) = "a..."
 StringUtils.abbreviate("abcdefg", 3) = IllegalArgumentException
 

Parameters:

str - the String to check, may be null

maxWidth - maximum length of result String, must be at least 4

Returns:

abbreviated String, null if null String input

Throws:

IllegalArgumentException - if the width is too small

Since:

2.0

abbreviate

public static String abbreviate(String str,
 int offset,
 int maxWidth)

Abbreviates a String using ellipses. This will turn "Now is the time for all good men" into "...is the time for..."

Works like abbreviate(String, int), but allows you to specify a "left edge" offset. Note that this left edge is not necessarily going to be the leftmost character in the result, or the first character following the ellipses, but it will appear somewhere in the result.

In no case will it return a String of length greater than maxWidth.

 StringUtils.abbreviate(null, *, *)                = null
 StringUtils.abbreviate("", 0, 4)                  = ""
 StringUtils.abbreviate("abcdefghijklmno", -1, 10) = "abcdefg..."
 StringUtils.abbreviate("abcdefghijklmno", 0, 10)  = "abcdefg..."
 StringUtils.abbreviate("abcdefghijklmno", 1, 10)  = "abcdefg..."
 StringUtils.abbreviate("abcdefghijklmno", 4, 10)  = "abcdefg..."
 StringUtils.abbreviate("abcdefghijklmno", 5, 10)  = "...fghi..."
 StringUtils.abbreviate("abcdefghijklmno", 6, 10)  = "...ghij..."
 StringUtils.abbreviate("abcdefghijklmno", 8, 10)  = "...ijklmno"
 StringUtils.abbreviate("abcdefghijklmno", 10, 10) = "...ijklmno"
 StringUtils.abbreviate("abcdefghijklmno", 12, 10) = "...ijklmno"
 StringUtils.abbreviate("abcdefghij", 0, 3)        = IllegalArgumentException
 StringUtils.abbreviate("abcdefghij", 5, 6)        = IllegalArgumentException
 

Parameters:

str - the String to check, may be null

offset - left edge of source String

maxWidth - maximum length of result String, must be at least 4

Returns:

abbreviated String, null if null String input

Throws:

IllegalArgumentException - if the width is too small

Since:

2.0

split

public static String[] split(String str)

Splits the provided text into an array, using whitespace as the separator. Whitespace is defined by Character.isWhitespace(char).

The separator is not included in the returned String array. Adjacent separators are treated as one separator. For more control over the split use the StrTokenizer class.

A null input String returns null.

 StringUtils.split(null)       = null
 StringUtils.split("")         = []
 StringUtils.split("abc def")  = ["abc", "def"]
 StringUtils.split("abc  def") = ["abc", "def"]
 StringUtils.split(" abc ")    = ["abc"]
 

Parameters:

str - the String to parse, may be null

Returns:

an array of parsed Strings, null if null String input

split

public static String[] split(String str,
 char separatorChar)

Splits the provided text into an array, separator specified. This is an alternative to using StringTokenizer.

The separator is not included in the returned String array. Adjacent separators are treated as one separator. For more control over the split use the StrTokenizer class.

A null input String returns null.

 StringUtils.split(null, *)         = null
 StringUtils.split("", *)           = []
 StringUtils.split("a.b.c", '.')    = ["a", "b", "c"]
 StringUtils.split("a..b.c", '.')   = ["a", "b", "c"]
 StringUtils.split("a:b:c", '.')    = ["a:b:c"]
 StringUtils.split("a\tb\nc", null) = ["a", "b", "c"]
 StringUtils.split("a b c", ' ')    = ["a", "b", "c"]
 

Parameters:

str - the String to parse, may be null

separatorChar - the character used as the delimiter, null splits on whitespace

Returns:

an array of parsed Strings, null if null String input

Since:

2.0

split

public static String[] split(String str,
 String separatorChars)

Splits the provided text into an array, separators specified. This is an alternative to using StringTokenizer.

The separator is not included in the returned String array. Adjacent separators are treated as one separator. For more control over the split use the StrTokenizer class.

A null input String returns null. A null separatorChars splits on whitespace.

 StringUtils.split(null, *)         = null
 StringUtils.split("", *)           = []
 StringUtils.split("abc def", null) = ["abc", "def"]
 StringUtils.split("abc def", " ")  = ["abc", "def"]
 StringUtils.split("abc  def", " ") = ["abc", "def"]
 StringUtils.split("ab:cd:ef", ":") = ["ab", "cd", "ef"]
 

Parameters:

str - the String to parse, may be null

separatorChars - the characters used as the delimiters, null splits on whitespace

Returns:

an array of parsed Strings, null if null String input

split

public static String[] split(String str,
 String separatorChars,
 int max)

Splits the provided text into an array with a maximum length, separators specified.

The separator is not included in the returned String array. Adjacent separators are treated as one separator.

A null input String returns null. A null separatorChars splits on whitespace.

If more than max delimited substrings are found, the last returned string includes all characters after the first max - 1 returned strings (including separator characters).

 StringUtils.split(null, *, *)            = null
 StringUtils.split("", *, *)              = []
 StringUtils.split("ab de fg", null, 0)   = ["ab", "cd", "ef"]
 StringUtils.split("ab   de fg", null, 0) = ["ab", "cd", "ef"]
 StringUtils.split("ab:cd:ef", ":", 0)    = ["ab", "cd", "ef"]
 StringUtils.split("ab:cd:ef", ":", 2)    = ["ab", "cd:ef"]
 

Parameters:

str - the String to parse, may be null

separatorChars - the characters used as the delimiters, null splits on whitespace

max - the maximum number of elements to include in the array. A zero or negative value implies no limit

Returns:

an array of parsed Strings, null if null String input

splitByWholeSeparator

public static String[] splitByWholeSeparator(String str,
 String separator)

Splits the provided text into an array, separator string specified.

The separator(s) will not be included in the returned String array. Adjacent separators are treated as one separator.

A null input String returns null. A null separator splits on whitespace.

 StringUtils.split(null, *)            = null
 StringUtils.split("", *)              = []
 StringUtils.split("ab de fg", null)   = ["ab", "de", "fg"]
 StringUtils.split("ab   de fg", null) = ["ab", "de", "fg"]
 StringUtils.split("ab:cd:ef", ":")    = ["ab", "cd", "ef"]
 StringUtils.split("abstemiouslyaeiouyabstemiously", "aeiouy")  = ["bst", "m", "sl", "bst", "m", "sl"]
 StringUtils.split("abstemiouslyaeiouyabstemiously", "aeiouy")  = ["abstemiously", "abstemiously"]
 

Parameters:

str - the String to parse, may be null

separator - String containing the String to be used as a delimiter, null splits on whitespace

Returns:

an array of parsed Strings, null if null String was input

splitByWholeSeparator

public static String[] splitByWholeSeparator(String str,
 String separator,
 int max)

Splits the provided text into an array, separator string specified. Returns a maximum of max substrings.

The separator(s) will not be included in the returned String array. Adjacent separators are treated as one separator.

A null input String returns null. A null separator splits on whitespace.

 StringUtils.splitByWholeSeparator(null, *, *)               = null
 StringUtils.splitByWholeSeparator("", *, *)                 = []
 StringUtils.splitByWholeSeparator("ab de fg", null, 0)      = ["ab", "de", "fg"]
 StringUtils.splitByWholeSeparator("ab   de fg", null, 0)    = ["ab", "de", "fg"]
 StringUtils.splitByWholeSeparator("ab:cd:ef", ":", 2)       = ["ab", "cd"]
 StringUtils.splitByWholeSeparator("abstemiouslyaeiouyabstemiously", "aeiouy", 2) = ["bst", "m"]
 StringUtils.splitByWholeSeparator("abstemiouslyaeiouyabstemiously", "aeiouy", 2)  = ["abstemiously", "abstemiously"]
 

Parameters:

str - the String to parse, may be null

separator - String containing the String to be used as a delimiter, null splits on whitespace

max - the maximum number of elements to include in the returned array. A zero or negative value implies no limit.

Returns:

an array of parsed Strings, null if null String was input

splitPreserveAllTokens

public static String[] splitPreserveAllTokens(String str)

Splits the provided text into an array, using whitespace as the separator, preserving all tokens, including empty tokens created by adjacent separators. This is an alternative to using StringTokenizer. Whitespace is defined by Character.isWhitespace(char).

The separator is not included in the returned String array. Adjacent separators are treated as separators for empty tokens. For more control over the split use the StrTokenizer class.

A null input String returns null.

 StringUtils.splitPreserveAllTokens(null)       = null
 StringUtils.splitPreserveAllTokens("")         = []
 StringUtils.splitPreserveAllTokens("abc def")  = ["abc", "def"]
 StringUtils.splitPreserveAllTokens("abc  def") = ["abc", "", "def"]
 StringUtils.splitPreserveAllTokens(" abc ")    = ["", "abc", ""]
 

Parameters:

str - the String to parse, may be null

Returns:

an array of parsed Strings, null if null String input

Since:

2.1

splitPreserveAllTokens

public static String[] splitPreserveAllTokens(String str,
 char separatorChar)

Splits the provided text into an array, separator specified, preserving all tokens, including empty tokens created by adjacent separators. This is an alternative to using StringTokenizer.

The separator is not included in the returned String array. Adjacent separators are treated as separators for empty tokens. For more control over the split use the StrTokenizer class.

A null input String returns null.

 StringUtils.splitPreserveAllTokens(null, *)         = null
 StringUtils.splitPreserveAllTokens("", *)           = []
 StringUtils.splitPreserveAllTokens("a.b.c", '.')    = ["a", "b", "c"]
 StringUtils.splitPreserveAllTokens("a..b.c", '.')   = ["a", "b", "c"]
 StringUtils.splitPreserveAllTokens("a:b:c", '.')    = ["a:b:c"]
 StringUtils.splitPreserveAllTokens("a\tb\nc", null) = ["a", "b", "c"]
 StringUtils.splitPreserveAllTokens("a b c", ' ')    = ["a", "b", "c"]
 StringUtils.splitPreserveAllTokens("a b c ", ' ')   = ["a", "b", "c", ""]
 StringUtils.splitPreserveAllTokens("a b c ", ' ')   = ["a", "b", "c", "", ""]
 StringUtils.splitPreserveAllTokens(" a b c", ' ')   = ["", a", "b", "c"]
 StringUtils.splitPreserveAllTokens("  a b c", ' ')  = ["", "", a", "b", "c"]
 StringUtils.splitPreserveAllTokens(" a b c ", ' ')  = ["", a", "b", "c", ""]
 

Parameters:

str - the String to parse, may be null

separatorChar - the character used as the delimiter, null splits on whitespace

Returns:

an array of parsed Strings, null if null String input

Since:

2.1

splitPreserveAllTokens

public static String[] splitPreserveAllTokens(String str,
 String separatorChars)

Splits the provided text into an array, separators specified, preserving all tokens, including empty tokens created by adjacent separators. This is an alternative to using StringTokenizer.

The separator is not included in the returned String array. Adjacent separators are treated as separators for empty tokens. For more control over the split use the StrTokenizer class.

A null input String returns null. A null separatorChars splits on whitespace.

 StringUtils.splitPreserveAllTokens(null, *)           = null
 StringUtils.splitPreserveAllTokens("", *)             = []
 StringUtils.splitPreserveAllTokens("abc def", null)   = ["abc", "def"]
 StringUtils.splitPreserveAllTokens("abc def", " ")    = ["abc", "def"]
 StringUtils.splitPreserveAllTokens("abc  def", " ")   = ["abc", "", def"]
 StringUtils.splitPreserveAllTokens("ab:cd:ef", ":")   = ["ab", "cd", "ef"]
 StringUtils.splitPreserveAllTokens("ab:cd:ef:", ":")  = ["ab", "cd", "ef", ""]
 StringUtils.splitPreserveAllTokens("ab:cd:ef::", ":") = ["ab", "cd", "ef", "", ""]
 StringUtils.splitPreserveAllTokens("ab::cd:ef", ":")  = ["ab", "", cd", "ef"]
 StringUtils.splitPreserveAllTokens(":cd:ef", ":")     = ["", cd", "ef"]
 StringUtils.splitPreserveAllTokens("::cd:ef", ":")    = ["", "", cd", "ef"]
 StringUtils.splitPreserveAllTokens(":cd:ef:", ":")    = ["", cd", "ef", ""]
 

Parameters:

str - the String to parse, may be null

separatorChars - the characters used as the delimiters, null splits on whitespace

Returns:

an array of parsed Strings, null if null String input

Since:

2.1

splitPreserveAllTokens

public static String[] splitPreserveAllTokens(String str,
 String separatorChars,
 int max)

Splits the provided text into an array with a maximum length, separators specified, preserving all tokens, including empty tokens created by adjacent separators.

The separator is not included in the returned String array. Adjacent separators are treated as separators for empty tokens. Adjacent separators are treated as one separator.

A null input String returns null. A null separatorChars splits on whitespace.

If more than max delimited substrings are found, the last returned string includes all characters after the first max - 1 returned strings (including separator characters).

 StringUtils.splitPreserveAllTokens(null, *, *)            = null
 StringUtils.splitPreserveAllTokens("", *, *)              = []
 StringUtils.splitPreserveAllTokens("ab de fg", null, 0)   = ["ab", "cd", "ef"]
 StringUtils.splitPreserveAllTokens("ab   de fg", null, 0) = ["ab", "cd", "ef"]
 StringUtils.splitPreserveAllTokens("ab:cd:ef", ":", 0)    = ["ab", "cd", "ef"]
 StringUtils.splitPreserveAllTokens("ab:cd:ef", ":", 2)    = ["ab", "cd:ef"]
 StringUtils.splitPreserveAllTokens("ab   de fg", null, 2) = ["ab", "  de fg"]
 StringUtils.splitPreserveAllTokens("ab   de fg", null, 3) = ["ab", "", " de fg"]
 StringUtils.splitPreserveAllTokens("ab   de fg", null, 4) = ["ab", "", "", "de fg"]
 

Parameters:

str - the String to parse, may be null

separatorChars - the characters used as the delimiters, null splits on whitespace

max - the maximum number of elements to include in the array. A zero or negative value implies no limit

Returns:

an array of parsed Strings, null if null String input

Since:

2.1

join

public static String join(Object[] array)

Joins the elements of the provided array into a single String containing the provided list of elements.

No separator is added to the joined String. Null objects or empty strings within the array are represented by empty strings.

 StringUtils.join(null)            = null
 StringUtils.join([])              = ""
 StringUtils.join([null])          = ""
 StringUtils.join(["a", "b", "c"]) = "abc"
 StringUtils.join([null, "", "a"]) = "a"
 

Parameters:

array - the array of values to join together, may be null

Returns:

the joined String, null if null array input

Since:

2.0

join

public static String join(Object[] array,
 char separator)

Joins the elements of the provided array into a single String containing the provided list of elements.

No delimiter is added before or after the list. Null objects or empty strings within the array are represented by empty strings.

 StringUtils.join(null, *)               = null
 StringUtils.join([], *)                 = ""
 StringUtils.join([null], *)             = ""
 StringUtils.join(["a", "b", "c"], ';')  = "a;b;c"
 StringUtils.join(["a", "b", "c"], null) = "abc"
 StringUtils.join([null, "", "a"], ';')  = ";;a"
 

Parameters:

array - the array of values to join together, may be null

separator - the separator character to use

Returns:

the joined String, null if null array input

Since:

2.0

join

public static String join(Object[] array,
 String separator)

Joins the elements of the provided array into a single String containing the provided list of elements.

No delimiter is added before or after the list. A null separator is the same as an empty String (""). Null objects or empty strings within the array are represented by empty strings.

 StringUtils.join(null, *)                = null
 StringUtils.join([], *)                  = ""
 StringUtils.join([null], *)              = ""
 StringUtils.join(["a", "b", "c"], "--")  = "a--b--c"
 StringUtils.join(["a", "b", "c"], null)  = "abc"
 StringUtils.join(["a", "b", "c"], "")    = "abc"
 StringUtils.join([null, "", "a"], ',')   = ",,a"
 

Parameters:

array - the array of values to join together, may be null

separator - the separator character to use, null treated as ""

Returns:

the joined String, null if null array input

join

public static String join(Iterator iterator,
 char separator)

Joins the elements of the provided Iterator into a single String containing the provided elements.

No delimiter is added before or after the list. Null objects or empty strings within the iteration are represented by empty strings.

See the examples here: join(Object[],char).

Parameters:

iterator - the Iterator of values to join together, may be null

separator - the separator character to use

Returns:

the joined String, null if null iterator input

Since:

2.0

join

public static String join(Iterator iterator,
 String separator)

Joins the elements of the provided Iterator into a single String containing the provided elements.

No delimiter is added before or after the list. A null separator is the same as an empty String ("").

See the examples here: join(Object[],String).

Parameters:

iterator - the Iterator of values to join together, may be null

separator - the separator character to use, null treated as ""

Returns:

the joined String, null if null iterator input

defaultString

public static String defaultString(String str)

Returns either the passed in String, or if the String is null, an empty String ("").

 StringUtils.defaultString(null)  = ""
 StringUtils.defaultString("")    = ""
 StringUtils.defaultString("bat") = "bat"
 

Parameters:

str - the String to check, may be null

Returns:

the passed in String, or the empty String if it was null

See Also:

• String.valueOf(Object)

defaultString

public static String defaultString(String str,
 String defaultStr)

Returns either the passed in String, or if the String is null, the value of defaultStr.

 StringUtils.defaultString(null, "NULL")  = "NULL"
 StringUtils.defaultString("", "NULL")    = ""
 StringUtils.defaultString("bat", "NULL") = "bat"
 

Parameters:

str - the String to check, may be null

defaultStr - the default String to return if the input is null, may be null

Returns:

the passed in String, or the default if it was null

See Also:

• String.valueOf(Object)

defaultIfEmpty

public static String defaultIfEmpty(String str,
 String defaultStr)

Returns either the passed in String, or if the String is empty or null, the value of defaultStr.

 StringUtils.defaultIfEmpty(null, "NULL")  = "NULL"
 StringUtils.defaultIfEmpty("", "NULL")    = "NULL"
 StringUtils.defaultIfEmpty("bat", "NULL") = "bat"
 

Parameters:

str - the String to check, may be null

defaultStr - the default String to return if the input is empty ("") or null, may be null

Returns:

the passed in String, or the default

capitalize

public static String capitalize(String str)

Capitalizes a String changing the first letter to title case as per Character.toTitleCase(char). No other letters are changed.

A null input String returns null.

 StringUtils.capitalize(null)  = null
 StringUtils.capitalize("")    = ""
 StringUtils.capitalize("cat") = "Cat"
 StringUtils.capitalize("cAt") = "CAt"
 

Parameters:

str - the String to capitalize, may be null

Returns:

the capitalized String, null if null String input

Since:

2.0

capitalizeFully

public static String capitalizeFully(String str)

Converts all the whitespace separated words in a String into capitalized words, that is each word is made up of a titlecase character and then a series of lowercase characters.

Whitespace is defined by Character.isWhitespace(char). A null input String returns null. Capitalization uses the Unicode title case, normally equivalent to upper case.

 WordUtils.capitalizeFully(null)        = null
 WordUtils.capitalizeFully("")          = ""
 WordUtils.capitalizeFully("i am FINE") = "I Am Fine"
 

Parameters:

str - the String to capitalize, may be null

Returns:

capitalized String, null if null String input

capitalizeFully

public static String capitalizeFully(String str,
 char... delimiters)

Converts all the delimiter separated words in a String into capitalized words, that is each word is made up of a titlecase character and then a series of lowercase characters.

The delimiters represent a set of characters understood to separate words. The first string character and the first non-delimiter character after a delimiter will be capitalized.

A null input String returns null. Capitalization uses the Unicode title case, normally equivalent to upper case.

 WordUtils.capitalizeFully(null, *)            = null
 WordUtils.capitalizeFully("", *)              = ""
 WordUtils.capitalizeFully(*, null)            = *
 WordUtils.capitalizeFully(*, new char[0])     = *
 WordUtils.capitalizeFully("i aM.fine", {'.'}) = "I am.Fine"
 

Parameters:

str - the String to capitalize, may be null

delimiters - set of characters to determine capitalization, null means whitespace

Returns:

capitalized String, null if null String input

Since:

2.1

capitalize

public static String capitalize(String str,
 char... delimiters)

Capitalizes all the delimiter separated words in a String. Only the first letter of each word is changed. To convert the rest of each word to lowercase at the same time, use capitalizeFully(String, char[]).

The delimiters represent a set of characters understood to separate words. The first string character and the first non-delimiter character after a delimiter will be capitalized.

A null input String returns null. Capitalization uses the Unicode title case, normally equivalent to upper case.

 WordUtils.capitalize(null, *)            = null
 WordUtils.capitalize("", *)              = ""
 WordUtils.capitalize(*, new char[0])     = *
 WordUtils.capitalize("i am fine", null)  = "I Am Fine"
 WordUtils.capitalize("i aM.fine", {'.'}) = "I aM.Fine"
 

Parameters:

str - the String to capitalize, may be null

delimiters - set of characters to determine capitalization, null means whitespace

Returns:

capitalized String, null if null String input

Since:

2.1

See Also:

• capitalizeFully(String)

contains

public static boolean contains(String str,
 char searchChar)

Checks if String contains a search character, handling null. This method uses String.indexOf(int).

A null or empty ("") String will return false.

 StringUtils.contains(null, *)    = false
 StringUtils.contains("", *)      = false
 StringUtils.contains("abc", 'a') = true
 StringUtils.contains("abc", 'z') = false
 

Parameters:

str - the String to check, may be null

searchChar - the character to find

Returns:

true if the String contains the search character, false if not or null string input

Since:

2.0

contains

public static boolean contains(String str,
 String searchStr)

Checks if String contains a search String, handling null. This method uses String.indexOf(int).

A null String will return false.

 StringUtils.contains(null, *)     = false
 StringUtils.contains(*, null)     = false
 StringUtils.contains("", "")      = true
 StringUtils.contains("abc", "")   = true
 StringUtils.contains("abc", "a")  = true
 StringUtils.contains("abc", "z")  = false
 

Parameters:

str - the String to check, may be null

searchStr - the String to find, may be null

Returns:

true if the String contains the search String, false if not or null string input

Since:

2.0

equals

public static boolean equals(Object object1,
 Object object2)

Compares two objects for equality, where either one or both objects may be null.

 ObjectUtils.equals(null, null)                  = true
 ObjectUtils.equals(null, "")                    = false
 ObjectUtils.equals("", null)                    = false
 ObjectUtils.equals("", "")                      = true
 ObjectUtils.equals(Boolean.TRUE, null)          = false
 ObjectUtils.equals(Boolean.TRUE, "true")        = false
 ObjectUtils.equals(Boolean.TRUE, Boolean.TRUE)  = true
 ObjectUtils.equals(Boolean.TRUE, Boolean.FALSE) = false
 

Parameters:

object1 - the first object, may be null

object2 - the second object, may be null

Returns:

true if the values of both objects are the same

stripLastSlashIfExists

public static String stripLastSlashIfExists(String input)

strip the last slash (/ or \) from a string if it exists

Parameters:

input -

Returns:

input - the last / or \

stripStart

public static String stripStart(String str,
 String stripChars)

Strips any of a set of characters from the start of a String.

A null input String returns null. An empty string ("") input returns the empty string.

If the stripChars String is null, whitespace is stripped as defined by Character.isWhitespace(char).

 StringUtils.stripStart(null, *)          = null
 StringUtils.stripStart("", *)            = ""
 StringUtils.stripStart("abc", "")        = "abc"
 StringUtils.stripStart("abc", null)      = "abc"
 StringUtils.stripStart("  abc", null)    = "abc"
 StringUtils.stripStart("abc  ", null)    = "abc  "
 StringUtils.stripStart(" abc ", null)    = "abc "
 StringUtils.stripStart("yxabc  ", "xyz") = "abc  "
 

Parameters:

str - the String to remove characters from, may be null

stripChars - the characters to remove, null treated as whitespace

Returns:

the stripped String, null if null String input

stripEnd

public static String stripEnd(String str,
 String stripChars)

Strips any of a set of characters from the end of a String.

A null input String returns null. An empty string ("") input returns the empty string.

If the stripChars String is null, whitespace is stripped as defined by Character.isWhitespace(char).

 StringUtils.stripEnd(null, *)          = null
 StringUtils.stripEnd("", *)            = ""
 StringUtils.stripEnd("abc", "")        = "abc"
 StringUtils.stripEnd("abc", null)      = "abc"
 StringUtils.stripEnd("  abc", null)    = "  abc"
 StringUtils.stripEnd("abc  ", null)    = "abc"
 StringUtils.stripEnd(" abc ", null)    = " abc"
 StringUtils.stripEnd("  abcyx", "xyz") = "  abc"
 

Parameters:

str - the String to remove characters from, may be null

stripChars - the characters to remove, null treated as whitespace

Returns:

the stripped String, null if null String input

repeat

public static String repeat(String str,
 int repeat)

Repeat a String repeat times to form a new String.

 StringUtils.repeat(null, 2) = null
 StringUtils.repeat("", 0)   = ""
 StringUtils.repeat("", 2)   = ""
 StringUtils.repeat("a", 3)  = "aaa"
 StringUtils.repeat("ab", 2) = "abab"
 StringUtils.repeat("a", -2) = ""
 

Parameters:

str - the String to repeat, may be null

repeat - number of times to repeat str, negative treated as zero

Returns:

a new String consisting of the original String repeated, null if null String input

rightPad

public static String rightPad(String str,
 int size)

Right pad a String with spaces (' ').

The String is padded to the size of size.

 StringUtils.rightPad(null, *)   = null
 StringUtils.rightPad("", 3)     = "   "
 StringUtils.rightPad("bat", 3)  = "bat"
 StringUtils.rightPad("bat", 5)  = "bat  "
 StringUtils.rightPad("bat", 1)  = "bat"
 StringUtils.rightPad("bat", -1) = "bat"
 

Parameters:

str - the String to pad out, may be null

size - the size to pad to

Returns:

right padded String or original String if no padding is necessary, null if null String input

rightPad

public static String rightPad(String str,
 int size,
 char padChar)

Right pad a String with a specified character.

The String is padded to the size of size.

 StringUtils.rightPad(null, *, *)     = null
 StringUtils.rightPad("", 3, 'z')     = "zzz"
 StringUtils.rightPad("bat", 3, 'z')  = "bat"
 StringUtils.rightPad("bat", 5, 'z')  = "batzz"
 StringUtils.rightPad("bat", 1, 'z')  = "bat"
 StringUtils.rightPad("bat", -1, 'z') = "bat"
 

Parameters:

str - the String to pad out, may be null

size - the size to pad to

padChar - the character to pad with

Returns:

right padded String or original String if no padding is necessary, null if null String input

Since:

2.0

rightPad

public static String rightPad(String str,
 int size,
 String padStr)

Right pad a String with a specified String.

The String is padded to the size of size.

 StringUtils.rightPad(null, *, *)      = null
 StringUtils.rightPad("", 3, "z")      = "zzz"
 StringUtils.rightPad("bat", 3, "yz")  = "bat"
 StringUtils.rightPad("bat", 5, "yz")  = "batyz"
 StringUtils.rightPad("bat", 8, "yz")  = "batyzyzy"
 StringUtils.rightPad("bat", 1, "yz")  = "bat"
 StringUtils.rightPad("bat", -1, "yz") = "bat"
 StringUtils.rightPad("bat", 5, null)  = "bat  "
 StringUtils.rightPad("bat", 5, "")    = "bat  "
 

Parameters:

str - the String to pad out, may be null

size - the size to pad to

padStr - the String to pad with, null or empty treated as single space

Returns:

right padded String or original String if no padding is necessary, null if null String input

leftPad

public static String leftPad(String str,
 int size)

Left pad a String with spaces (' ').

The String is padded to the size of size.

 StringUtils.leftPad(null, *)   = null
 StringUtils.leftPad("", 3)     = "   "
 StringUtils.leftPad("bat", 3)  = "bat"
 StringUtils.leftPad("bat", 5)  = "  bat"
 StringUtils.leftPad("bat", 1)  = "bat"
 StringUtils.leftPad("bat", -1) = "bat"
 

Parameters:

str - the String to pad out, may be null

size - the size to pad to

Returns:

left padded String or original String if no padding is necessary, null if null String input

leftPad

public static String leftPad(String str,
 int size,
 char padChar)

Left pad a String with a specified character.

Pad to a size of size.

 StringUtils.leftPad(null, *, *)     = null
 StringUtils.leftPad("", 3, 'z')     = "zzz"
 StringUtils.leftPad("bat", 3, 'z')  = "bat"
 StringUtils.leftPad("bat", 5, 'z')  = "zzbat"
 StringUtils.leftPad("bat", 1, 'z')  = "bat"
 StringUtils.leftPad("bat", -1, 'z') = "bat"
 

Parameters:

str - the String to pad out, may be null

size - the size to pad to

padChar - the character to pad with

Returns:

left padded String or original String if no padding is necessary, null if null String input

Since:

2.0

leftPad

public static String leftPad(String str,
 int size,
 String padStr)

Left pad a String with a specified String.

Pad to a size of size.

 StringUtils.leftPad(null, *, *)      = null
 StringUtils.leftPad("", 3, "z")      = "zzz"
 StringUtils.leftPad("bat", 3, "yz")  = "bat"
 StringUtils.leftPad("bat", 5, "yz")  = "yzbat"
 StringUtils.leftPad("bat", 8, "yz")  = "yzyzybat"
 StringUtils.leftPad("bat", 1, "yz")  = "bat"
 StringUtils.leftPad("bat", -1, "yz") = "bat"
 StringUtils.leftPad("bat", 5, null)  = "  bat"
 StringUtils.leftPad("bat", 5, "")    = "  bat"
 

Parameters:

str - the String to pad out, may be null

size - the size to pad to

padStr - the String to pad with, null or empty treated as single space

Returns:

left padded String or original String if no padding is necessary, null if null String input

substringBefore

public static String substringBefore(String str,
 String separator)

Gets the substring before the first occurrence of a separator. The separator is not returned.

A null string input will return null. An empty ("") string input will return the empty string. A null separator will return the input string.

 StringUtils.substringBefore(null, *)      = null
 StringUtils.substringBefore("", *)        = ""
 StringUtils.substringBefore("abc", "a")   = ""
 StringUtils.substringBefore("abcba", "b") = "a"
 StringUtils.substringBefore("abc", "c")   = "ab"
 StringUtils.substringBefore("abc", "d")   = "abc"
 StringUtils.substringBefore("abc", "")    = ""
 StringUtils.substringBefore("abc", null)  = "abc"
 

Parameters:

str - the String to get a substring from, may be null

separator - the String to search for, may be null

Returns:

the substring before the first occurrence of the separator, null if null String input

Since:

2.0

substringAfter

public static String substringAfter(String str,
 String separator)

Gets the substring after the first occurrence of a separator. The separator is not returned.

A null string input will return null. An empty ("") string input will return the empty string. A null separator will return the empty string if the input string is not null.

 StringUtils.substringAfter(null, *)      = null
 StringUtils.substringAfter("", *)        = ""
 StringUtils.substringAfter(*, null)      = ""
 StringUtils.substringAfter("abc", "a")   = "bc"
 StringUtils.substringAfter("abcba", "b") = "cba"
 StringUtils.substringAfter("abc", "c")   = ""
 StringUtils.substringAfter("abc", "d")   = ""
 StringUtils.substringAfter("abc", "")    = "abc"
 

Parameters:

str - the String to get a substring from, may be null

separator - the String to search for, may be null

Returns:

the substring after the first occurrence of the separator, null if null String input

Since:

2.0

substringBeforeLast

public static String substringBeforeLast(String str,
 String separator)

Gets the substring before the last occurrence of a separator. The separator is not returned.

A null string input will return null. An empty ("") string input will return the empty string. An empty or null separator will return the input string.

 StringUtils.substringBeforeLast(null, *)      = null
 StringUtils.substringBeforeLast("", *)        = ""
 StringUtils.substringBeforeLast("abcba", "b") = "abc"
 StringUtils.substringBeforeLast("abc", "c")   = "ab"
 StringUtils.substringBeforeLast("a", "a")     = ""
 StringUtils.substringBeforeLast("a", "z")     = "a"
 StringUtils.substringBeforeLast("a", null)    = "a"
 StringUtils.substringBeforeLast("a", "")      = "a"
 

Parameters:

str - the String to get a substring from, may be null

separator - the String to search for, may be null

Returns:

the substring before the last occurrence of the separator, null if null String input

Since:

2.0

substringAfterLast

public static String substringAfterLast(String str,
 String separator)

Gets the substring after the last occurrence of a separator. The separator is not returned.

A null string input will return null. An empty ("") string input will return the empty string. An empty or null separator will return the empty string if the input string is not null.

 StringUtils.substringAfterLast(null, *)      = null
 StringUtils.substringAfterLast("", *)        = ""
 StringUtils.substringAfterLast(*, "")        = ""
 StringUtils.substringAfterLast(*, null)      = ""
 StringUtils.substringAfterLast("abc", "a")   = "bc"
 StringUtils.substringAfterLast("abcba", "b") = "a"
 StringUtils.substringAfterLast("abc", "c")   = ""
 StringUtils.substringAfterLast("a", "a")     = ""
 StringUtils.substringAfterLast("a", "z")     = ""
 

Parameters:

str - the String to get a substring from, may be null

separator - the String to search for, may be null

Returns:

the substring after the last occurrence of the separator, null if null String input

Since:

2.0

getFirstParentStemOfName

public static Stem getFirstParentStemOfName(String name)

Returns the first existing parent stem of a given name. So if the following stems exist: i2 i2:test And you run getFirstParentStemOfName("i2:test:mystem:mygroup"), you will get back the stem for i2:test. If you run getFirstParentStemOfName("test1:test2"), you will get back the root stem.

Parameters:

name -

Returns:

Stem

listPopOne

public static <T> T listPopOne(List<T> list)

Return the zero element of the list, if it exists, null if the list is empty. If there is more than one element in the list, an exception is thrown.

Type Parameters:

T -

Parameters:

list - is the container of objects to get the first of.

Returns:

the first object, null, or exception.

setPopOne

public static <T> T setPopOne(Set<T> set)

Return the zero element of the set, if it exists, null if the list is empty. If there is more than one element in the list, an exception is thrown.

Type Parameters:

T -

Parameters:

set - is the container of objects to get the first of.

Returns:

the first object, null, or exception.

collectionPopOne

public static <T> T collectionPopOne(Collection<T> collection,
 boolean exceptionIfMoreThanOne)

Return the zero element of the list, if it exists, null if the list is empty. If there is more than one element in the list, an exception is thrown.

Type Parameters:

T -

Parameters:

collection - is the container of objects to get the first of.

exceptionIfMoreThanOne - will throw exception if there is more than one item in list

Returns:

the first object, null, or exception.

xmlEscape

public static String xmlEscape(String input)

Convert an XML string to HTML to display on the screen

Parameters:

input - is the XML to convert

isEscape - true to escape chars, false to unescape

Returns:

the HTML converted string

xmlEscape

public static String xmlEscape(String input,
 boolean isEscape)

Convert an XML string to HTML to display on the screen

Parameters:

input - is the XML to convert

isEscape - true to escape chars, false to unescape

Returns:

the HTML converted string

appendIfNotBlank

public static boolean appendIfNotBlank(StringBuilder result,
 Object theStringOrArrayOrList)

if theString is not blank, apppend it to the result, and if appending,

Parameters:

result - to append to add a prefix and suffix (if not null)

theStringOrArrayOrList - is a string, array, list, or set of strings

Returns:

true if something appended, false if not

appendIfNotBlankString

public static String appendIfNotBlankString(String string,
 String separator,
 String suffix)

 append a string to another string if both not blank, with separator.  trim to empty everything
 

Parameters:

string -

separator -

suffix -

Returns:

the resulting string or blank if nothing

appendPrefixIfStringNotBlank

public static String appendPrefixIfStringNotBlank(String prefix,
 String separator,
 String string)

 append a prefix to another string if both not blank.  trim to empty everything except separator
 i.e. appendPrefixIfStringNotBlank("[]", " - ", "a")   returns [] - a
 i.e. appendPrefixIfStringNotBlank("", " - ", "a")   returns a
 i.e. appendPrefixIfStringNotBlank("[]", " - ", "")   returns ""
 i.e. appendPrefixIfStringNotBlank("", " - ", "")   returns ""
 

Parameters:

prefix -

separator -

string -

Returns:

the resulting string or blank if nothing

appendIfNotBlank

public static boolean appendIfNotBlank(StringBuilder result,
 String prefix,
 Object theStringOrArrayOrList)

if theString is not Blank, apppend it to the result, and if appending, add a prefix (if not null)

Parameters:

result - to append to

prefix -

theStringOrArrayOrList - is a string, array, list, or set of strings

Returns:

true if something appended, false if not

appendIfNotBlank

public static boolean appendIfNotBlank(StringBuilder result,
 String prefix,
 Object theStringOrArrayOrList,
 String suffix)

if theString is not Blank, apppend it to the result, and if appending, add a prefix and suffix (if not null)

Parameters:

result - to append to, assumed to be not null

prefix -

theStringOrArrayOrList - is a string, array, list, or set of strings

suffix -

Returns:

true if anything appended, false if not

appendIfNotBlank

public static boolean appendIfNotBlank(StringBuilder result,
 String prefix,
 String prefixIfNotBlank,
 Object theStringOrArrayOrList,
 String suffix)

if theString is not Blank, apppend it to the result, and if appending, add a prefix and suffix (if not null)

Parameters:

result - to append to, assumed to be not null

prefix - prepend this prefix always (when a result not empty). Will be after the other prefix

prefixIfNotBlank - prepend this prefix if the result is not empty

theStringOrArrayOrList - is a string, array, list, or set of strings

suffix -

Returns:

true if anything appended, false if not

appendIfNotEmpty

public static boolean appendIfNotEmpty(StringBuilder result,
 Object theStringOrArrayOrList)

if theString is not empty, apppend it to the result, and if appending,

Parameters:

result - to append to add a prefix and suffix (if not null)

theStringOrArrayOrList - is a string, array, list, or set of strings

Returns:

true if something appended, false if not

appendIfNotEmpty

public static boolean appendIfNotEmpty(StringBuilder result,
 String prefix,
 Object theStringOrArrayOrList)

if theString is not empty, apppend it to the result, and if appending, add a prefix (if not null)

Parameters:

result - to append to

prefix -

theStringOrArrayOrList - is a string, array, list, or set of strings

Returns:

true if something appended, false if not

appendIfNotEmpty

public static boolean appendIfNotEmpty(StringBuilder result,
 String prefix,
 Object theStringOrArrayOrList,
 String suffix)

if theString is not empty, apppend it to the result, and if appending, add a prefix and suffix (if not null)

Parameters:

result - to append to, assumed to be not null

prefix -

theStringOrArrayOrList - is a string, array, list, or set of strings

suffix -

Returns:

true if anything appended, false if not

appendIfNotEmpty

public static boolean appendIfNotEmpty(StringBuilder result,
 String prefix,
 String prefixIfNotEmpty,
 Object theStringOrArrayOrList,
 String suffix)

if theString is not empty, apppend it to the result, and if appending, add a prefix and suffix (if not null)

Parameters:

result - to append to, assumed to be not null

prefix - prepend this prefix always (when a result not empty). Will be after the other prefix

prefixIfNotEmpty - prepend this prefix if the result is not empty

theStringOrArrayOrList - is a string, array, list, or set of strings

suffix -

Returns:

true if anything appended, false if not

indexOf

public static int indexOf(Object[] array,
 Object objectToFind)

Find the index of the given object in the array.

This method returns -1 if null array input.

Parameters:

array - the array to search through for the object, may be null

objectToFind - the object to find, may be null

Returns:

the index of the object within the array, -1 if not found or null array input

contains

public static boolean contains(Object[] array,
 Object objectToFind)

Checks if the object is in the given array.

The method returns false if a null array is passed in.

Parameters:

array - the array to search through

objectToFind - the object to find

Returns:

true if the array contains the object

indexOf

public static int indexOf(Object[] array,
 Object objectToFind,
 int startIndex)

Find the index of the given object in the array starting at the given index.

This method returns -1 if null array input.

A negative startIndex is treated as zero. A startIndex larger than the array length will return -1.

Parameters:

array - the array to search through for the object, may be null

objectToFind - the object to find, may be null

startIndex - the index to start searching at

Returns:

the index of the object within the array starting at the index, -1 if not found or null array input

arrayPopOne

public static <T> T arrayPopOne(T[] array)

Return the zero element of the array, if it exists, null if the array is empty. If there is more than one element in the list, an exception is thrown.

Type Parameters:

T -

Parameters:

array - is the container of objects to get the first of.

Returns:

the first object, null, or exception.

dateToString

public static String dateToString(Date date)

convert a date to a string using the standard web service pattern yyyy/MM/dd HH:mm:ss.SSS Note that HH is 0-23

Parameters:

date -

Returns:

the string, or null if the date is null

stringToDate

public static Date stringToDate(String dateString)

convert a string to a date using the standard web service pattern Note that HH is 0-23

Parameters:

dateString -

Returns:

the string, or null if the date was null

getMaxLongValue

public static Long getMaxLongValue(Long... values)

Parameters:

values -

Returns:

the max long in the list of args

getMinLongValue

public static Long getMinLongValue(Long... values)

Parameters:

values -

Returns:

the min long in the list of args

ipOnNetwork

public static boolean ipOnNetwork(String ipString,
 String networkIpString,
 int mask)

see if an ip address is on a network

Parameters:

ipString - is the ip address to check

networkIpString - is the ip address of the network

mask - is the length of the mask (0-32)

Returns:

boolean

ipOnNetworks

public static boolean ipOnNetworks(String ipString,
 String networkIpStrings)

see if an ip address is on a network

Parameters:

ipString - is the ip address to check

networkIpStrings - are the ip addresses of the networks, e.g. 1.2.3.4/12, 2.3.4.5/24

Returns:

boolean

ipReadyForAnd

public static int ipReadyForAnd(int ip,
 int maskLength)

get the ip address after putting 1's where the subnet mask is not

Parameters:

ip - int

maskLength - int

Returns:

int

ipInt

public static int ipInt(String ip)

get the ip addres integer from a string ip address

Parameters:

ip - String

Returns:

int

getFullStackTrace

public static String getFullStackTrace(Throwable throwable)

A way to get the entire nested stack-trace of an throwable.

Parameters:

throwable - the Throwable to be examined

Returns:

the nested stack trace, with the root cause first

Since:

2.0

get

public static Object get(Object arrayOrCollection,
 int index)

Get a specific index of an array or collection (note for collections and iterating, it is more efficient to get an iterator and iterate

Parameters:

arrayOrCollection -

index -

Returns:

the object at that index

unenhanceClass

public static Class unenhanceClass(Class theClass)

if a class is enhanced, get the unenhanced version

Parameters:

theClass -

Returns:

the unenhanced version

getThrowables

public static Throwable[] getThrowables(Throwable throwable)

Returns the list of Throwable objects in the exception chain.

A throwable without cause will return an array containing one element - the input throwable. A throwable with one cause will return an array containing two elements. - the input throwable and the cause throwable. A null throwable will return an array size zero.

Parameters:

throwable - the throwable to inspect, may be null

Returns:

the array of throwables, never null

isThrowableNested

public static boolean isThrowableNested()

Checks if the Throwable class has a getCause method.

This is true for JDK 1.4 and above.

Returns:

true if Throwable is nestable

Since:

2.0

isNestedThrowable

public static boolean isNestedThrowable(Throwable throwable)

Checks whether this Throwable class can store a cause.

This method does not check whether it actually does store a cause.

Parameters:

throwable - the Throwable to examine, may be null

Returns:

boolean true if nested otherwise false

Since:

2.0

getCause

public static Throwable getCause(Throwable throwable)

Introspects the Throwable to obtain the cause.

The method searches for methods with specific names that return a Throwable object. This will pick up most wrapping exceptions, including those from JDK 1.4, and NestableException.

The default list searched for are:

• getCause()
• getNextException()
• getTargetException()
• getException()
• getSourceException()
• getRootCause()
• getCausedByException()
• getNested()

In the absence of any such method, the object is inspected for a detail field assignable to a Throwable.

If none of the above is found, returns null.

Parameters:

throwable - the throwable to introspect for a cause, may be null

Returns:

the cause of the Throwable, null if none found or null throwable input

Since:

1.0

getCause

public static Throwable getCause(Throwable throwable,
 String[] methodNames)

Introspects the Throwable to obtain the cause.

1. Try known exception types.
2. Try the supplied array of method names.
3. Try the field 'detail'.

A null set of method names means use the default set. A null in the set of method names will be ignored.

Parameters:

throwable - the throwable to introspect for a cause, may be null

methodNames - the method names, null treated as default set

Returns:

the cause of the Throwable, null if none found or null throwable input

Since:

1.0

concat

public static String concat(String a,
 String b)

concat two strings

Parameters:

a -

b -

Returns:

the concatted string

concat

public static String concat(String a,
 String b,
 String c)

concat strings

Parameters:

a -

b -

c -

Returns:

the concatted string

concat

public static String concat(String a,
 String b,
 String c,
 String d)

concat strings

Parameters:

a -

b -

c -

d -

Returns:

the concatted string

concat

public static String concat(String a,
 String b,
 String c,
 String d,
 String e)

concat strings

Parameters:

a -

b -

c -

d -

Returns:

the concatted string

hostname

public static String hostname()

Hostname of server

Returns:

hostname of server

characterMatchesRegex

public static boolean characterMatchesRegex(Character character,
 String regex)

Parameters:

character -

regex -

Returns:

if regex

splitTrimCurlyColons

public static List<String> splitTrimCurlyColons(String input,
 String commaSeparatedAttributes,
 String regexAllowedChars,
 String replaceChar)

split by curly colons. only keep specific attribute values. if a regexAllowedChars is specified, then whitelist chars by regex. character to replace (e.g. underscore), default is underscore. if there isnt a value, dont put it in the list

Parameters:

input -

commaSeparatedAttributes -

regexAllowedChars -

replaceChar -

Returns:

the list of attributes

splitTrimCommas

public static List<String> splitTrimCommas(String input,
 String commaSeparatedAttributes,
 String regexAllowedChars,
 String replaceChar)

split by commas. only keep specific attribute values. if a regexAllowedChars is specified, then whitelist chars by regex. character to replace (e.g. underscore), default is underscore. if there isnt a value, dont put it in the list

Parameters:

input -

commaSeparatedAttributes -

regexAllowedChars -

replaceChar -

Returns:

the list of attributes

getFriendlyTimezoneStringForInputDescription

public static String getFriendlyTimezoneStringForInputDescription()

Return a string that combines the standard and daylight timezones of the server into one string separated by a slash that can be used in an input description to inform the user of the server timezone. For the main US timezones, the following is returned instead: ET, CT, MT, PT.

Returns:

string