public abstract class XMLGregorianCalendar extends Object implements Cloneable
Representation for W3C XML Schema 1.0 date/time datatypes.
 Specifically, these date/time datatypes are
 DatatypeConstants.DATETIME,
 DatatypeConstants.TIME,
 DatatypeConstants.DATE,
 DatatypeConstants.GYEARMONTH,
 DatatypeConstants.GMONTHDAY,
 DatatypeConstants.GYEAR,
 DatatypeConstants.GMONTH, and
 DatatypeConstants.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()orgetEonAndYear() | getYear()is a value between -(10^9-1) to (10^9)-1
            orDatatypeConstants.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 23 or DatatypeConstants.FIELD_UNDEFINED.
         An hour value of 24 is allowed to be set in the lexical space provided the minute and second
         field values are zero. However, an hour value of 24 is not allowed in value space and will be
         transformed to represent the value of the first instance of the following day as per
         
         XML Schema Part 2: Datatypes Second Edition, 3.2 Primitive datatypes. | 
| minute | getMinute() | 0 to 59 or DatatypeConstants.FIELD_UNDEFINED | 
| second | getSecond()+getMillisecond()/1000 orgetSecond()+getFractionalSecond() | getSecond()from 0 to 60 orDatatypeConstants.FIELD_UNDEFINED.(Note: 60 only allowable for leap second.) getFractionalSecond()allows for infinite precision over the range from 0.0 to 1.0 when
         thegetSecond()is defined.FractionalSecondis optional and has a value ofnullwhen it is undefined.getMillisecond()is the convenience
            millisecond precision of value ofgetFractionalSecond(). | 
| 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:
toString(), DatatypeFactory.newXMLGregorianCalendar(String lexicalRepresentation)GregorianCalendar,
     toGregorianCalendar(java.util.TimeZone timezone, java.util.Locale aLocale, XMLGregorianCalendar defaults),
     DatatypeFactorycompare(XMLGregorianCalendar xmlGregorianCalendar)equals(Object) defined relative to compare(XMLGregorianCalendar xmlGregorianCalendar).Duration
      instance as defined in 
      W3C XML Schema 1.0 Part 2, Appendix E, Adding durations to dateTimes.
   Duration, 
DatatypeFactory| Constructor and Description | 
|---|
| XMLGregorianCalendar()Default no-arg constructor. | 
| Modifier and Type | Method and Description | 
|---|---|
| abstract void | add(Duration duration)Add  durationto 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)Compares this calendar to the specified object. | 
| 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 int | getTimezone()Return timezone offset in minutes or
  DatatypeConstants.FIELD_UNDEFINEDif this optional field is not defined. | 
| abstract TimeZone | getTimeZone(int defaultZoneoffset)Returns a  java.util.TimeZonefor this class. | 
| 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
  yearorDatatypeConstants.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  XMLGregorianCalendarto 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)Set time as one unit. | 
| 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,
       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  dateTimeyear field. | 
| abstract void | setYear(int year)Set year of XSD  dateTimeyear field. | 
| abstract GregorianCalendar | toGregorianCalendar()Convert this  XMLGregorianCalendarto aGregorianCalendar. | 
| abstract GregorianCalendar | toGregorianCalendar(TimeZone timezone,
                   Locale aLocale,
                   XMLGregorianCalendar defaults)Convert this  XMLGregorianCalendaralong with provided parameters
 to aGregorianCalendarinstance. | 
| String | toString()Returns a  Stringrepresentation of thisXMLGregorianCalendarObject. | 
| abstract String | toXMLFormat()Return the lexical representation of  thisinstance. | 
public XMLGregorianCalendar()
Note: Always use the DatatypeFactory to
 construct an instance of XMLGregorianCalendar.
 The constructor on this class cannot be guaranteed to
 produce an object with a consistent state and may be
 removed in the future.
public abstract void clear()
Unset all fields to undefined.
Set all int fields to DatatypeConstants.FIELD_UNDEFINED and reference fields
 to null.
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 lexicalRepresentation),
 DatatypeFactory.newXMLGregorianCalendar(
   BigInteger year,
   int month,
   int day,
   int hour,
   int minute,
   int second,
   BigDecimal fractionalSecond,
   int timezone),
 DatatypeFactory.newXMLGregorianCalendar(
   int year,
   int month,
   int day,
   int hour,
   int minute,
   int second,
   int millisecond,
   int timezone),
 DatatypeFactory.newXMLGregorianCalendar(GregorianCalendar cal),
 DatatypeFactory.newXMLGregorianCalendarDate(
   int year,
   int month,
   int day,
   int timezone),
 DatatypeFactory.newXMLGregorianCalendarTime(
   int hours,
   int minutes,
   int seconds,
   int timezone),
 DatatypeFactory.newXMLGregorianCalendarTime(
   int hours,
   int minutes,
   int seconds,
   BigDecimal fractionalSecond,
   int timezone) or
 DatatypeFactory.newXMLGregorianCalendarTime(
   int hours,
   int minutes,
   int seconds,
   int milliseconds,
   int timezone).
 
reset() is designed to allow the reuse of existing XMLGregorianCalendars
 thus saving resources associated with the creation of new XMLGregorianCalendars.
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.
year - value constraints summarized in year field of date/time field mapping table.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.
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 void setMonth(int month)
Set month.
Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.
month - value constraints summarized in month field of date/time field mapping table.IllegalArgumentException - if month parameter is
 outside value constraints for the field as specified in
 date/time field mapping table.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.
day - value constraints summarized in day field of date/time field mapping table.IllegalArgumentException - if day 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.
offset - value constraints summarized in 
   timezone field of date/time field mapping table.IllegalArgumentException - if offset 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.
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.IllegalArgumentException - if any parameter is
 outside value constraints for the field as specified in
 date/time field mapping table.setTime(int, int, int, BigDecimal)public abstract void setHour(int hour)
Set hours.
Unset this field by invoking the setter with a parameter value of DatatypeConstants.FIELD_UNDEFINED.
hour - value constraints summarized in hour field of date/time field mapping table.IllegalArgumentException - if hour 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.
minute - value constraints summarized in minute field of date/time field mapping table.IllegalArgumentException - if minute 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.
second - value constraints summarized in second field of date/time field mapping table.IllegalArgumentException - if second 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.
millisecond - value constraints summarized in
   second field of date/time field mapping table.IllegalArgumentException - if millisecond 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.
fractional - value constraints summarized in
   second field of date/time field mapping table.IllegalArgumentException - if fractional 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.
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.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,
                    int millisecond)
Set time as one unit, including optional milliseconds.
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.IllegalArgumentException - if any parameter is
 outside value constraints for the field as specified in
 date/time field mapping table.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.
XMLGregorianCalendar. The value
 returned is an integer multiple of 10^9.getYear(), 
getEonAndYear()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.
XMLGregorianCalendar.getEon(), 
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.
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.
XMLGregorianCalendar.public abstract int getDay()
DatatypeConstants.FIELD_UNDEFINED.
 Value constraints for this value are summarized in day field of date/time field mapping table.
setDay(int)public abstract int getTimezone()
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.
setTimezone(int)public abstract int getHour()
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.
setTime(int, int, int)public abstract int getMinute()
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.
setTime(int, int, int)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.
XMLGregorianCalendar.getFractionalSecond(), 
getMillisecond(), 
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.
XMLGregorianCalendar.getFractionalSecond(), 
setTime(int, int, int)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.
XMLGregorianCalendar.getSecond(), 
setTime(int, int, int, BigDecimal)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.
xmlGregorianCalendar - Instance of XMLGregorianCalendar to comparethis XMLGregorianCalendar and
   the specified xmlGregorianCalendar as
   DatatypeConstants.LESSER,
   DatatypeConstants.EQUAL,
   DatatypeConstants.GREATER or
   DatatypeConstants.INDETERMINATE.NullPointerException - if xmlGregorianCalendar is null.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).
this XMLGregorianCalendar normalized to UTC.public boolean equals(Object obj)
Compares this calendar to the specified object. The result is
 true if and only if the argument is not null and is an
 XMLGregorianCalendar object that represents the same
 instant in time as this object.
equals in class Objectobj - to compare.true when obj is an instance of
 XMLGregorianCalendar and
 compare(XMLGregorianCalendar obj)
 returns DatatypeConstants.EQUAL,
 otherwise false.Object.hashCode(), 
HashMappublic int hashCode()
Returns a hash code consistent with the definition of the equals method.
hashCode in class ObjectObject.equals(java.lang.Object), 
System.identityHashCode(java.lang.Object)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().
String, representation of this XMLGregorianCalendarIllegalStateException - if the combination of set fields
    does not match one of the eight defined XML Schema builtin date/time datatypes.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 | |||||
DatatypeConstants.DATETIME,
   DatatypeConstants.TIME,
   DatatypeConstants.DATE,
   DatatypeConstants.GYEARMONTH,
   DatatypeConstants.GMONTHDAY,
   DatatypeConstants.GYEAR,
   DatatypeConstants.GMONTH or
   DatatypeConstants.GDAY.IllegalStateException - if the combination of set fields
    does not match one of the eight defined XML Schema builtin
    date/time datatypes.public String toString()
Returns a String representation of this XMLGregorianCalendar Object.
The result is a lexical representation generated by toXMLFormat().
toString in class Objectnull valid String representation of this XMLGregorianCalendar.IllegalStateException - if the combination of set fields
    does not match one of the eight defined XML Schema builtin date/time datatypes.toXMLFormat()public abstract boolean isValid()
getXMLSchemaType() constraints.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.
duration - Duration to add to this XMLGregorianCalendar.NullPointerException - when duration parameter is 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.GregorianCalendarfield | javax.xml.datatype.XMLGregorianCalendarfield | 
| 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 | 
To ensure consistency in conversion implementations, the new
 GregorianCalendar should be instantiated in following
 manner.
 
timeZone value as defined above, create a new
 java.util.GregorianCalendar(timeZone,Locale.getDefault()).
   Calendar.clear().GregorianCalendar.setGregorianChange(
   new Date(Long.MIN_VALUE)).Calendar.set(int,int)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,
 
timeZone is non-null,
 it is the timezone field.this.getTimezone() != FIELD_UNDEFINED,
 create a java.util.TimeZone with a custom timezone id
 using the this.getTimezone().defaults.getTimezone() != FIELD_UNDEFINED,
 create a java.util.TimeZone with a custom timezone id
 using defaults.getTimezone().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.
 
java.util.GregorianCalendar(TimeZone,
       Locale) with TimeZone set as specified above and the
       Locale parameter.
   Calendar.clear()GregorianCalendar.setGregorianChange(
   new Date(Long.MIN_VALUE)).Calendar.set(int,int)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.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).
defaultZoneoffset - default zoneoffset if this zoneoffset is
 DatatypeConstants.FIELD_UNDEFINED. Submit a bug or feature 
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
 Copyright © 1993, 2025, Oracle and/or its affiliates.  All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.