XMLGregorianCalendar

public abstract class XMLGregorianCalendar extends Object
implements Cloneable

Representation for W3C XML Schema 1.0 date/time datatypes. Specifically, these date/time datatypes are dateTime, time, date, gYearMonth, gMonthDay, gYear gMonth and gDay defined in the XML Namespace "http://www.w3.org/2001/XMLSchema". These datatypes are normatively defined in W3C XML Schema 1.0 Part 2, Section 3.2.7-14.

The table below defines the mapping between XML Schema 1.0 date/time datatype fields and this class' fields. It also summarizes the value constraints for the date and time fields defined in W3C XML Schema 1.0 Part 2, Appendix D, ISO 8601 Date and Time Formats.

Date/Time Datatype Field Mapping Between XML Schema 1.0 and Java Representation
XML Schema 1.0 datatype field	Related XMLGregorianCalendar Accessor(s)	Value Range
year	getYear() + getEon() or getEonAndYear()	getYear() is a value between -(10^9-1) to (10^9)-1 or DatatypeConstants.FIELD_UNDEFINED. getEon() is high order year value in billion of years. getEon() has values greater than or equal to (10^9) or less than or equal to -(10^9). A value of null indicates field is undefined. Given that XML Schema 1.0 errata states that the year zero will be a valid lexical value in a future version of XML Schema, this class allows the year field to be set to zero. Otherwise, the year field value is handled exactly as described in the errata and [ISO-8601-1988]. Note that W3C XML Schema 1.0 validation does not allow for the year field to have a value of zero.
month	getMonth()	1 to 12 or DatatypeConstants.FIELD_UNDEFINED
day	getDay()	Independent of month, max range is 1 to 31 or DatatypeConstants.FIELD_UNDEFINED. The normative value constraint stated relative to month field's value is in W3C XML Schema 1.0 Part 2, Appendix D.
hour	getHour()	0 to 24 or DatatypeConstants.FIELD_UNDEFINED. For a value of 24, the minute and second field must be zero per XML Schema Errata.
minute	getMinute()	0 to 59 or DatatypeConstants.FIELD_UNDEFINED
second	getSecond() + getMillisecond()/1000 or getSecond() + getFractionalSecond()	getSecond() from 0 to 60 or DatatypeConstants.FIELD_UNDEFINED. (Note: 60 only allowable for leap second.) getFractionalSecond() allows for infinite precision over the range from 0.0 to 1.0 when the getSecond() is defined. FractionalSecond is optional and has a value of null when it is undefined. getMillisecond() is the convenience millisecond precision of value of getFractionalSecond().
timezone	getTimezone()	Number of minutes or DatatypeConstants.FIELD_UNDEFINED. Value range from -14 hours (-14 * 60 minutes) to 14 hours (14 * 60 minutes).

All maximum value space constraints listed for the fields in the table above are checked by factory methods, @{link DatatypeFactory}, setter methods and parse methods of this class. IllegalArgumentException is thrown when a parameter's value is outside the value constraint for the field or if the composite values constitute an invalid XMLGregorianCalendar instance (for example, if the 31st of June is specified).

The following operations are defined for this class:

• accessors/mutators for independent date/time fields
• conversion between this class and W3C XML Schema 1.0 lexical representation, toString(), DatatypeFactory.newXMLGregorianCalendar(String)
• conversion between this class and GregorianCalendar, toGregorianCalendar(java.util.TimeZone, java.util.Locale, XMLGregorianCalendar), DatatypeFactory
• partial order relation comparator method, compare(XMLGregorianCalendar)
• equals(Object) defined relative to compare(XMLGregorianCalendar).
• addition operation with Duration instance as defined in W3C XML Schema 1.0 Part 2, Appendix E, Adding durations to dateTimes.

See Also

• Duration
• DatatypeFactory

Public Constructor Summary

XMLGregorianCalendar()

Public Method Summary

abstract void	add(Duration duration) Add duration to this instance.
abstract void	clear() Unset all fields to undefined.
abstract Object	clone() Creates and returns a copy of this object.
abstract int	compare(XMLGregorianCalendar xmlGregorianCalendar) Compare two instances of W3C XML Schema 1.0 date/time datatypes according to partial order relation defined in W3C XML Schema 1.0 Part 2, Section 3.2.7.3, Order relation on dateTime.
boolean	equals(Object obj) Indicates whether parameter obj is "equal to" this one.
abstract int	getDay() Return day in month or DatatypeConstants.FIELD_UNDEFINED.
abstract BigInteger	getEon() Return high order component for XML Schema 1.0 dateTime datatype field for year.
abstract BigInteger	getEonAndYear() Return XML Schema 1.0 dateTime datatype field for year.
abstract BigDecimal	getFractionalSecond() Return fractional seconds.
abstract int	getHour() Return hours or DatatypeConstants.FIELD_UNDEFINED.
int	getMillisecond() Return millisecond precision of getFractionalSecond().
abstract int	getMinute() Return minutes or DatatypeConstants.FIELD_UNDEFINED.
abstract int	getMonth() Return number of month or DatatypeConstants.FIELD_UNDEFINED.
abstract int	getSecond() Return seconds or DatatypeConstants.FIELD_UNDEFINED.
abstract TimeZone	getTimeZone(int defaultZoneoffset) Returns a java.util.TimeZone for this class.
abstract int	getTimezone() Return timezone offset in minutes or DatatypeConstants.FIELD_UNDEFINED if this optional field is not defined.
abstract QName	getXMLSchemaType() Return the name of the XML Schema date/time type that this instance maps to.
abstract int	getYear() Return low order component for XML Schema 1.0 dateTime datatype field for year or DatatypeConstants.FIELD_UNDEFINED.
int	hashCode() Returns a hash code consistent with the definition of the equals method.
abstract boolean	isValid() Validate instance by getXMLSchemaType() constraints.
abstract XMLGregorianCalendar	normalize() Normalize this instance to UTC.
abstract void	reset() Reset this XMLGregorianCalendar to its original values.
abstract void	setDay(int day) Set days in month.
abstract void	setFractionalSecond(BigDecimal fractional) Set fractional seconds.
abstract void	setHour(int hour) Set hours.
abstract void	setMillisecond(int millisecond) Set milliseconds.
abstract void	setMinute(int minute) Set minutes.
abstract void	setMonth(int month) Set month.
abstract void	setSecond(int second) Set seconds.
void	setTime(int hour, int minute, int second, BigDecimal fractional) Set time as one unit, including the optional infinite precision fractional seconds.
void	setTime(int hour, int minute, int second) Set time as one unit.
void	setTime(int hour, int minute, int second, int millisecond) Set time as one unit, including optional milliseconds.
abstract void	setTimezone(int offset) Set the number of minutes in the timezone offset.
abstract void	setYear(BigInteger year) Set low and high order component of XSD dateTime year field.
abstract void	setYear(int year) Set year of XSD dateTime year field.
abstract GregorianCalendar	toGregorianCalendar() Convert this XMLGregorianCalendar to a GregorianCalendar.
abstract GregorianCalendar	toGregorianCalendar(TimeZone timezone, Locale aLocale, XMLGregorianCalendar defaults) Convert this XMLGregorianCalendar along with provided parameters to a GregorianCalendar instance.
String	toString() Returns a String representation of this XMLGregorianCalendar Object.
abstract String	toXMLFormat() Return the lexical representation of this instance.

Inherited Method Summary

From class java.lang.Object

Object	clone() Creates and returns a copy of this Object.
boolean	equals(Object obj) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of Class that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long timeout, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait(long timeout) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.

Public Constructors

public XMLGregorianCalendar ()

Public Methods

public abstract void add (Duration duration)

Add duration to this instance.

The computation is specified in XML Schema 1.0 Part 2, Appendix E, Adding durations to dateTimes>. date/time field mapping table defines the mapping from XML Schema 1.0 dateTime fields to this class' representation of those fields.

Parameters

duration	Duration to add to this XMLGregorianCalendar.

Throws

NullPointerException	when duration parameter is null.

public abstract void clear ()

Unset all fields to undefined.

Set all int fields to DatatypeConstants.FIELD_UNDEFINED and reference fields to null.

public abstract Object clone ()

Creates and returns a copy of this object.

Returns

• copy of this Object

public abstract int compare (XMLGregorianCalendar xmlGregorianCalendar)

Compare two instances of W3C XML Schema 1.0 date/time datatypes according to partial order relation defined in W3C XML Schema 1.0 Part 2, Section 3.2.7.3, Order relation on dateTime.

xsd:dateTime datatype field mapping to accessors of this class are defined in date/time field mapping table.

Parameters

xmlGregorianCalendar	Instance of XMLGregorianCalendar to compare

Returns

• The relationship between this XMLGregorianCalendar and the specified xmlGregorianCalendar as DatatypeConstants.LESSER, DatatypeConstants.EQUAL, DatatypeConstants.GREATER or DatatypeConstants.INDETERMINATE.

Throws

NullPointerException	if xmlGregorianCalendar is null.

public boolean equals (Object obj)

Indicates whether parameter obj is "equal to" this one.

Parameters

obj	to compare.

Returns

• true when obj is an instance of XMLGregorianCalendar and compare(XMLGregorianCalendar) returns DatatypeConstants.EQUAL, otherwise false.

public abstract int getDay ()

Return day in month or DatatypeConstants.FIELD_UNDEFINED.

Value constraints for this value are summarized in day field of date/time field mapping table.

See Also

• setDay(int)

public abstract BigInteger getEon ()

Return high order component for XML Schema 1.0 dateTime datatype field for year. null if this optional part of the year field is not defined.

Value constraints for this value are summarized in year field of date/time field mapping table.

Returns

• eon of this XMLGregorianCalendar. The value returned is an integer multiple of 10^9.

See Also

• getYear()
• getEonAndYear()

public abstract BigInteger getEonAndYear ()

Return XML Schema 1.0 dateTime datatype field for year.

Value constraints for this value are summarized in year field of date/time field mapping table.

Returns

• sum of eon and BigInteger.valueOf(year) when both fields are defined. When only year is defined, return it. When both eon and year are not defined, return null.

See Also

• getEon()
• getYear()

public abstract BigDecimal getFractionalSecond ()

Return fractional seconds.

null is returned when this optional field is not defined.

Value constraints are detailed in second field of date/time field mapping table.

This optional field can only have a defined value when the xs:dateTime second field, represented by getSecond(), does not return DatatypeConstants.FIELD_UNDEFINED.

Returns

• fractional seconds of this XMLGregorianCalendar.

See Also

• getSecond()
• setTime(int, int, int, BigDecimal)

public abstract int getHour ()

Return hours or DatatypeConstants.FIELD_UNDEFINED. Returns DatatypeConstants.FIELD_UNDEFINED if this field is not defined.

Value constraints for this value are summarized in hour field of date/time field mapping table.

See Also

• setTime(int, int, int)

public int getMillisecond ()

Return millisecond precision of getFractionalSecond().

This method represents a convenience accessor to infinite precision fractional second value returned by getFractionalSecond(). The returned value is the rounded down to milliseconds value of getFractionalSecond(). When getFractionalSecond() returns null, this method must return DatatypeConstants.FIELD_UNDEFINED.

Value constraints for this value are summarized in second field of date/time field mapping table.

Returns

• Millisecond of this XMLGregorianCalendar.

See Also

• getFractionalSecond()
• setTime(int, int, int)

public abstract int getMinute ()

Return minutes or DatatypeConstants.FIELD_UNDEFINED.

Returns DatatypeConstants.FIELD_UNDEFINED if this field is not defined.

Value constraints for this value are summarized in minute field of date/time field mapping table.

See Also

• setTime(int, int, int)

public abstract int getMonth ()

Return number of month or DatatypeConstants.FIELD_UNDEFINED.

Value constraints for this value are summarized in month field of date/time field mapping table.

Returns

• year of this XMLGregorianCalendar.

public abstract int getSecond ()

Return seconds or DatatypeConstants.FIELD_UNDEFINED.

Returns DatatypeConstants.FIELD_UNDEFINED if this field is not defined. When this field is not defined, the optional xs:dateTime fractional seconds field, represented by getFractionalSecond() and getMillisecond(), must not be defined.

Value constraints for this value are summarized in second field of date/time field mapping table.

Returns

• Second of this XMLGregorianCalendar.

See Also

• getFractionalSecond()
• getMillisecond()
• setTime(int, int, int)

public abstract TimeZone getTimeZone (int defaultZoneoffset)

Returns a java.util.TimeZone for this class.

If timezone field is defined for this instance, returns TimeZone initialized with custom timezone id of zoneoffset. If timezone field is undefined, try the defaultZoneoffset that was passed in. If defaultZoneoffset is FIELD_UNDEFINED, return default timezone for this host. (Same default as java.util.GregorianCalendar).

Parameters

defaultZoneoffset	default zoneoffset if this zoneoffset is DatatypeConstants.FIELD_UNDEFINED.

Returns

• TimeZone for this.

public abstract int getTimezone ()

Return timezone offset in minutes or DatatypeConstants.FIELD_UNDEFINED if this optional field is not defined.

Value constraints for this value are summarized in timezone field of date/time field mapping table.

See Also

• setTimezone(int)

public abstract QName getXMLSchemaType ()

Return the name of the XML Schema date/time type that this instance maps to. Type is computed based on fields that are set.

Required fields for XML Schema 1.0 Date/Time Datatypes. (timezone is optional for all date/time datatypes)
Datatype	year	month	day	hour	minute	second
DatatypeConstants.DATETIME	X	X	X	X	X	X
DatatypeConstants.DATE	X	X	X
DatatypeConstants.TIME				X	X	X
DatatypeConstants.GYEARMONTH	X	X
DatatypeConstants.GMONTHDAY		X	X
DatatypeConstants.GYEAR	X
DatatypeConstants.GMONTH		X
DatatypeConstants.GDAY			X

Returns

• One of the following class constants: DatatypeConstants.DATETIME, DatatypeConstants.TIME, DatatypeConstants.DATE, DatatypeConstants.GYEARMONTH, DatatypeConstants.GMONTHDAY, DatatypeConstants.GYEAR, DatatypeConstants.GMONTH or DatatypeConstants.GDAY.

Throws

IllegalStateException	if the combination of set fields does not match one of the eight defined XML Schema builtin date/time datatypes.

public abstract int getYear ()

Return low order component for XML Schema 1.0 dateTime datatype field for year or DatatypeConstants.FIELD_UNDEFINED.

Value constraints for this value are summarized in year field of date/time field mapping table.

Returns

• year of this XMLGregorianCalendar.

See Also

• getEon()
• getEonAndYear()

public int hashCode ()

Returns a hash code consistent with the definition of the equals method.

Returns

• hash code of this object.

public abstract boolean isValid ()

Validate instance by getXMLSchemaType() constraints.

Returns

• true if data values are valid.

public abstract XMLGregorianCalendar normalize ()

Normalize this instance to UTC.

2000-03-04T23:00:00+03:00 normalizes to 2000-03-04T20:00:00Z

Implements W3C XML Schema Part 2, Section 3.2.7.3 (A).

Returns

• this XMLGregorianCalendar normalized to UTC.

public abstract void reset ()

Reset this XMLGregorianCalendar to its original values.

XMLGregorianCalendar is reset to the same values as when it was created with DatatypeFactory.newXMLGregorianCalendar(), DatatypeFactory.newXMLGregorianCalendar(String), DatatypeFactory.newXMLGregorianCalendar(BigInteger, int, int, int, int, int, BigDecimal, int), DatatypeFactory.newXMLGregorianCalendar(int, int, int, int, int, int, int, int), DatatypeFactory.newXMLGregorianCalendar(GregorianCalendar), DatatypeFactory.newXMLGregorianCalendarDate(int, int, int, int), DatatypeFactory.newXMLGregorianCalendarTime(int, int, int, int), DatatypeFactory.newXMLGregorianCalendarTime(int, int, int, BigDecimal, int) or DatatypeFactory.newXMLGregorianCalendarTime(int, int, int, int, int).

reset() is designed to allow the reuse of existing XMLGregorianCalendars thus saving resources associated with the creation of new XMLGregorianCalendars.

public abstract void setDay (int day)

Set days in month.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Parameters

day	value constraints summarized in day field of date/time field mapping table.

Throws

IllegalArgumentException	if day parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setFractionalSecond (BigDecimal fractional)

Set fractional seconds.

Unset this field by invoking the setter with a parameter value of null.

Parameters

fractional	value constraints summarized in fractional field of date/time field mapping table.

Throws

IllegalArgumentException	if fractional parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setHour (int hour)

Set hours.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Parameters

hour	value constraints summarized in hour field of date/time field mapping table.

Throws

IllegalArgumentException	if hour parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setMillisecond (int millisecond)

Set milliseconds.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Parameters

millisecond	value constraints summarized in millisecond field of date/time field mapping table.

Throws

IllegalArgumentException	if millisecond parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setMinute (int minute)

Set minutes.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Parameters

minute	value constraints summarized in minute field of date/time field mapping table.

Throws

IllegalArgumentException	if minute parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setMonth (int month)

Set month.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Parameters

month	value constraints summarized in month field of date/time field mapping table.

Throws

IllegalArgumentException	if month parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setSecond (int second)

Set seconds.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Parameters

second	value constraints summarized in second field of date/time field mapping table.

Throws

IllegalArgumentException	if second parameter is outside value constraints for the field as specified in date/time field mapping table.

public void setTime (int hour, int minute, int second, BigDecimal fractional)

Set time as one unit, including the optional infinite precision fractional seconds.

Parameters

hour	value constraints are summarized in hour field of date/time field mapping table.
minute	value constraints are summarized in minute field of date/time field mapping table.
second	value constraints are summarized in second field of date/time field mapping table.
fractional	value of null indicates this optional field is not set.

Throws

IllegalArgumentException	if any parameter is outside value constraints for the field as specified in date/time field mapping table.

public void setTime (int hour, int minute, int second)

Set time as one unit.

Parameters

hour	value constraints are summarized in hour field of date/time field mapping table.
minute	value constraints are summarized in minute field of date/time field mapping table.
second	value constraints are summarized in second field of date/time field mapping table.

Throws

IllegalArgumentException	if any parameter is outside value constraints for the field as specified in date/time field mapping table.

See Also

• setTime(int, int, int, BigDecimal)

public void setTime (int hour, int minute, int second, int millisecond)

Set time as one unit, including optional milliseconds.

Parameters

hour	value constraints are summarized in hour field of date/time field mapping table.
minute	value constraints are summarized in minute field of date/time field mapping table.
second	value constraints are summarized in second field of date/time field mapping table.
millisecond	value of DatatypeConstants.FIELD_UNDEFINED indicates this optional field is not set.

Throws

IllegalArgumentException	if any parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setTimezone (int offset)

Set the number of minutes in the timezone offset.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Parameters

offset	value constraints summarized in timezone field of date/time field mapping table.

Throws

IllegalArgumentException	if offset parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setYear (BigInteger year)

Set low and high order component of XSD dateTime year field.

Unset this field by invoking the setter with a parameter value of null.

Parameters

year	value constraints summarized in year field of date/time field mapping table.

Throws

IllegalArgumentException	if year parameter is outside value constraints for the field as specified in date/time field mapping table.

public abstract void setYear (int year)

Set year of XSD dateTime year field.

Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.

Note: if the absolute value of the year parameter is less than 10^9, the eon component of the XSD year field is set to null by this method.

Parameters

year	value constraints are summarized in year field of date/time field mapping table. If year is DatatypeConstants.FIELD_UNDEFINED, then eon is set to null.

public abstract GregorianCalendar toGregorianCalendar ()

Convert this XMLGregorianCalendar to a GregorianCalendar.

When this instance has an undefined field, this conversion relies on the java.util.GregorianCalendar default for its corresponding field. A notable difference between XML Schema 1.0 date/time datatypes and java.util.GregorianCalendar is that Timezone value is optional for date/time datatypes and it is a required field for java.util.GregorianCalendar. See javadoc for java.util.TimeZone.getDefault() on how the default is determined. To explicitly specify the TimeZone instance, see toGregorianCalendar(TimeZone, Locale, XMLGregorianCalendar).

Field by Field Conversion from this class to java.util.GregorianCalendar
java.util.GregorianCalendar field	javax.xml.datatype.XMLGregorianCalendar field
ERA	getEonAndYear().signum() < 0 ? GregorianCalendar.BC : GregorianCalendar.AD
YEAR	getEonAndYear().abs().intValue()*
MONTH	getMonth() - DatatypeConstants.JANUARY + Calendar.JANUARY
DAY_OF_MONTH	getDay()
HOUR_OF_DAY	getHour()
MINUTE	getMinute()
SECOND	getSecond()
MILLISECOND	get millisecond order from getFractionalSecond()*
GregorianCalendar.setTimeZone(TimeZone)	getTimezone() formatted into Custom timezone id

* designates possible loss of precision during the conversion due to source datatype having higher precision than target datatype.

To ensure consistency in conversion implementations, the new GregorianCalendar should be instantiated in following manner.

• Using timeZone value as defined above, create a new java.util.GregorianCalendar(timeZone,Locale.getDefault()).
• Initialize all GregorianCalendar fields by calling {(@link GegorianCalendar#clear()}.
• Obtain a pure Gregorian Calendar by invoking GregorianCalendar.setGregorianChange( new Date(Long.MIN_VALUE)).
• Its fields ERA, YEAR, MONTH, DAY_OF_MONTH, HOUR_OF_DAY, MINUTE, SECOND and MILLISECOND are set using the method Calendar.set(int,int)

See Also

• toGregorianCalendar(java.util.TimeZone, java.util.Locale, XMLGregorianCalendar)

public abstract GregorianCalendar toGregorianCalendar (TimeZone timezone, Locale aLocale, XMLGregorianCalendar defaults)

Convert this XMLGregorianCalendar along with provided parameters to a GregorianCalendar instance.

Since XML Schema 1.0 date/time datetypes has no concept of timezone ids or daylight savings timezone ids, this conversion operation allows the user to explicitly specify one with timezone parameter.

To compute the return value's TimeZone field,

• when parameter timeZone is non-null, it is the timezone field.
• else when this.getTimezone() != FIELD_UNDEFINED, create a java.util.TimeZone with a custom timezone id using the this.getTimezone().
• else when defaults.getTimezone() != FIELD_UNDEFINED, create a java.util.TimeZone with a custom timezone id using defaults.getTimezone().
• else use the GregorianCalendar default timezone value for the host is defined as specified by java.util.TimeZone.getDefault().

To ensure consistency in conversion implementations, the new GregorianCalendar should be instantiated in following manner.

• Create a new java.util.GregorianCalendar(TimeZone, Locale) with TimeZone set as specified above and the Locale parameter.
• Initialize all GregorianCalendar fields by calling Calendar.clear()
• Obtain a pure Gregorian Calendar by invoking GregorianCalendar.setGregorianChange( new Date(Long.MIN_VALUE)).
• Its fields ERA, YEAR, MONTH, DAY_OF_MONTH, HOUR_OF_DAY, MINUTE, SECOND and MILLISECOND are set using the method Calendar.set(int,int)

Parameters

timezone	provide Timezone. null is a legal value.
aLocale	provide explicit Locale. Use default GregorianCalendar locale if value is null.
defaults	provide default field values to use when corresponding field for this instance is FIELD_UNDEFINED or null. If defaultsis null or a field within the specified defaults is undefined, just use java.util.GregorianCalendar defaults.

Returns

• a java.util.GregorianCalendar conversion of this instance.

public String toString ()

Returns a String representation of this XMLGregorianCalendar Object.

The result is a lexical representation generated by toXMLFormat().

Returns

• A non-null valid String representation of this XMLGregorianCalendar.

Throws

IllegalStateException	if the combination of set fields does not match one of the eight defined XML Schema builtin date/time datatypes.

See Also

• toXMLFormat()

public abstract String toXMLFormat ()

Return the lexical representation of this instance. The format is specified in XML Schema 1.0 Part 2, Section 3.2.[7-14].1, Lexical Representation".

Specific target lexical representation format is determined by getXMLSchemaType().

Returns

• XML, as String, representation of this XMLGregorianCalendar

Throws

IllegalStateException	if the combination of set fields does not match one of the eight defined XML Schema builtin date/time datatypes.