LocalDate

public final class LocalDate extends Object
implements Temporal TemporalAdjuster ChronoLocalDate Serializable

A date without a time-zone in the ISO-8601 calendar system, such as 2007-12-03.

LocalDate is an immutable date-time object that represents a date, often viewed as year-month-day. Other date fields, such as day-of-year, day-of-week and week-of-year, can also be accessed. For example, the value "2nd October 2007" can be stored in a LocalDate.

This class does not store or represent a time or time-zone. Instead, it is a description of the date, as used for birthdays. It cannot represent an instant on the time-line without additional information such as an offset or time-zone.

The ISO-8601 calendar system is the modern civil calendar system used today in most of the world. It is equivalent to the proleptic Gregorian calendar system, in which today's rules for leap years are applied for all time. For most applications written today, the ISO-8601 rules are entirely suitable. However, any application that makes use of historical dates, and requires them to be accurate will find the ISO-8601 approach unsuitable.

Field Summary

public static final LocalDate	MAX	The maximum supported `LocalDate`, '+999999999-12-31'.
public static final LocalDate	MIN	The minimum supported `LocalDate`, '-999999999-01-01'.

Public Method Summary

Temporal	adjustInto(Temporal temporal) Adjusts the specified temporal object to have the same date as this object.
ZonedDateTime	atStartOfDay(ZoneId zone) Returns a zoned date-time from this date at the earliest valid time according to the rules in the time-zone.
LocalDateTime	atStartOfDay() Combines this date with the time of midnight to create a `LocalDateTime` at the start of this date.
OffsetDateTime	atTime(OffsetTime time) Combines this date with an offset time to create an `OffsetDateTime`.
LocalDateTime	atTime(int hour, int minute) Combines this date with a time to create a `LocalDateTime`.
LocalDateTime	atTime(int hour, int minute, int second) Combines this date with a time to create a `LocalDateTime`.
LocalDateTime	atTime(int hour, int minute, int second, int nanoOfSecond) Combines this date with a time to create a `LocalDateTime`.
LocalDateTime	atTime(LocalTime time) Combines this date with a time to create a `LocalDateTime`.
int	compareTo(ChronoLocalDate other) Compares this date to another date.
boolean	equals(Object obj) Checks if this date is equal to another date.
String	format(DateTimeFormatter formatter) Formats this date using the specified formatter.
static LocalDate	from(TemporalAccessor temporal) Obtains an instance of `LocalDate` from a temporal object.
int	get(TemporalField field) Gets the value of the specified field from this date as an `int`.
IsoChronology	getChronology() Gets the chronology of this date, which is the ISO calendar system.
int	getDayOfMonth() Gets the day-of-month field.
DayOfWeek	getDayOfWeek() Gets the day-of-week field, which is an enum `DayOfWeek`.
int	getDayOfYear() Gets the day-of-year field.
Era	getEra() Gets the era applicable at this date.
long	getLong(TemporalField field) Gets the value of the specified field from this date as a `long`.
Month	getMonth() Gets the month-of-year field using the `Month` enum.
int	getMonthValue() Gets the month-of-year field from 1 to 12.
int	getYear() Gets the year field.
int	hashCode() A hash code for this date.
boolean	isAfter(ChronoLocalDate other) Checks if this date is after the specified date.
boolean	isBefore(ChronoLocalDate other) Checks if this date is before the specified date.
boolean	isEqual(ChronoLocalDate other) Checks if this date is equal to the specified date.
boolean	isLeapYear() Checks if the year is a leap year, according to the ISO proleptic calendar system rules.
boolean	isSupported(TemporalUnit unit) Checks if the specified unit is supported.
boolean	isSupported(TemporalField field) Checks if the specified field is supported.
int	lengthOfMonth() Returns the length of the month represented by this date.
int	lengthOfYear() Returns the length of the year represented by this date.
LocalDate	minus(TemporalAmount amountToSubtract) Returns a copy of this date with the specified amount subtracted.
LocalDate	minus(long amountToSubtract, TemporalUnit unit) Returns a copy of this date with the specified amount subtracted.
LocalDate	minusDays(long daysToSubtract) Returns a copy of this `LocalDate` with the specified number of days subtracted.
LocalDate	minusMonths(long monthsToSubtract) Returns a copy of this `LocalDate` with the specified number of months subtracted.
LocalDate	minusWeeks(long weeksToSubtract) Returns a copy of this `LocalDate` with the specified number of weeks subtracted.
LocalDate	minusYears(long yearsToSubtract) Returns a copy of this `LocalDate` with the specified number of years subtracted.
static LocalDate	now(ZoneId zone) Obtains the current date from the system clock in the specified time-zone.
static LocalDate	now() Obtains the current date from the system clock in the default time-zone.
static LocalDate	now(Clock clock) Obtains the current date from the specified clock.
static LocalDate	of(int year, int month, int dayOfMonth) Obtains an instance of `LocalDate` from a year, month and day.
static LocalDate	of(int year, Month month, int dayOfMonth) Obtains an instance of `LocalDate` from a year, month and day.
static LocalDate	ofEpochDay(long epochDay) Obtains an instance of `LocalDate` from the epoch day count.
static LocalDate	ofYearDay(int year, int dayOfYear) Obtains an instance of `LocalDate` from a year and day-of-year.
static LocalDate	parse(CharSequence text, DateTimeFormatter formatter) Obtains an instance of `LocalDate` from a text string using a specific formatter.
static LocalDate	parse(CharSequence text) Obtains an instance of `LocalDate` from a text string such as `2007-12-03`.
LocalDate	plus(TemporalAmount amountToAdd) Returns a copy of this date with the specified amount added.
LocalDate	plus(long amountToAdd, TemporalUnit unit) Returns a copy of this date with the specified amount added.
LocalDate	plusDays(long daysToAdd) Returns a copy of this `LocalDate` with the specified number of days added.
LocalDate	plusMonths(long monthsToAdd) Returns a copy of this `LocalDate` with the specified number of months added.
LocalDate	plusWeeks(long weeksToAdd) Returns a copy of this `LocalDate` with the specified number of weeks added.
LocalDate	plusYears(long yearsToAdd) Returns a copy of this `LocalDate` with the specified number of years added.
<R> R	query(TemporalQuery<R> query) Queries this date using the specified query.
ValueRange	range(TemporalField field) Gets the range of valid values for the specified field.
long	toEpochDay() Converts this date to the Epoch Day.
String	toString() Outputs this date as a `String`, such as `2007-12-03`.
long	until(Temporal endExclusive, TemporalUnit unit) Calculates the amount of time until another date in terms of the specified unit.
Period	until(ChronoLocalDate endDateExclusive) Calculates the period between this date and another date as a `Period`.
LocalDate	with(TemporalField field, long newValue) Returns a copy of this date with the specified field set to a new value.
LocalDate	with(TemporalAdjuster adjuster) Returns an adjusted copy of this date.
LocalDate	withDayOfMonth(int dayOfMonth) Returns a copy of this `LocalDate` with the day-of-month altered.
LocalDate	withDayOfYear(int dayOfYear) Returns a copy of this `LocalDate` with the day-of-year altered.
LocalDate	withMonth(int month) Returns a copy of this `LocalDate` with the month-of-year altered.
LocalDate	withYear(int year) Returns a copy of this `LocalDate` with the year altered.

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.

From interface java.time.temporal.Temporal

abstract boolean	isSupported(TemporalUnit unit) Checks if the specified unit is supported.
Temporal	minus(TemporalAmount amount) Returns an object of the same type as this object with an amount subtracted.
Temporal	minus(long amountToSubtract, TemporalUnit unit) Returns an object of the same type as this object with the specified period subtracted.
abstract Temporal	plus(long amountToAdd, TemporalUnit unit) Returns an object of the same type as this object with the specified period added.
Temporal	plus(TemporalAmount amount) Returns an object of the same type as this object with an amount added.
abstract long	until(Temporal endExclusive, TemporalUnit unit) Calculates the amount of time until another temporal in terms of the specified unit.
abstract Temporal	with(TemporalField field, long newValue) Returns an object of the same type as this object with the specified field altered.
Temporal	with(TemporalAdjuster adjuster) Returns an adjusted object of the same type as this object with the adjustment made.

From interface java.time.temporal.TemporalAdjuster

abstract Temporal

adjustInto(Temporal temporal)

Adjusts the specified temporal object.

From interface java.time.chrono.ChronoLocalDate

Temporal	adjustInto(Temporal temporal) Adjusts the specified temporal object to have the same date as this object.
ChronoLocalDateTime<?>	atTime(LocalTime localTime) Combines this date with a time to create a `ChronoLocalDateTime`.
int	compareTo(ChronoLocalDate other) Compares this date to another date, including the chronology.
abstract boolean	equals(Object obj) Checks if this date is equal to another date, including the chronology.
String	format(DateTimeFormatter formatter) Formats this date using the specified formatter.
static ChronoLocalDate	from(TemporalAccessor temporal) Obtains an instance of `ChronoLocalDate` from a temporal object.
abstract Chronology	getChronology() Gets the chronology of this date.
Era	getEra() Gets the era, as defined by the chronology.
abstract int	hashCode() A hash code for this date.
boolean	isAfter(ChronoLocalDate other) Checks if this date is after the specified date ignoring the chronology.
boolean	isBefore(ChronoLocalDate other) Checks if this date is before the specified date ignoring the chronology.
boolean	isEqual(ChronoLocalDate other) Checks if this date is equal to the specified date ignoring the chronology.
boolean	isLeapYear() Checks if the year is a leap year, as defined by the calendar system.
boolean	isSupported(TemporalUnit unit) Checks if the specified unit is supported.
boolean	isSupported(TemporalField field) Checks if the specified field is supported.
abstract int	lengthOfMonth() Returns the length of the month represented by this date, as defined by the calendar system.
int	lengthOfYear() Returns the length of the year represented by this date, as defined by the calendar system.
ChronoLocalDate	minus(TemporalAmount amount) Returns an object of the same type as this object with an amount subtracted.
ChronoLocalDate	minus(long amountToSubtract, TemporalUnit unit) Returns an object of the same type as this object with the specified period subtracted.
ChronoLocalDate	plus(TemporalAmount amount) Returns an object of the same type as this object with an amount added.
ChronoLocalDate	plus(long amountToAdd, TemporalUnit unit) Returns an object of the same type as this object with the specified period added.
<R> R	query(TemporalQuery<R> query) Queries this date using the specified query.
static Comparator<ChronoLocalDate>	timeLineOrder() Gets a comparator that compares `ChronoLocalDate` in time-line order ignoring the chronology.
long	toEpochDay() Converts this date to the Epoch Day.
abstract String	toString() Outputs this date as a `String`.
abstract long	until(Temporal endExclusive, TemporalUnit unit) Calculates the amount of time until another date in terms of the specified unit.
abstract ChronoPeriod	until(ChronoLocalDate endDateExclusive) Calculates the period between this date and another date as a `ChronoPeriod`.
ChronoLocalDate	with(TemporalField field, long newValue) Returns an object of the same type as this object with the specified field altered.
ChronoLocalDate	with(TemporalAdjuster adjuster) Returns an adjusted object of the same type as this object with the adjustment made.

From interface java.time.temporal.TemporalAccessor

int	get(TemporalField field) Gets the value of the specified field as an `int`.
abstract long	getLong(TemporalField field) Gets the value of the specified field as a `long`.
abstract boolean	isSupported(TemporalField field) Checks if the specified field is supported.
<R> R	query(TemporalQuery<R> query) Queries this date-time.
ValueRange	range(TemporalField field) Gets the range of valid values for the specified field.

From interface java.lang.Comparable

abstract int

compareTo(ChronoLocalDate o)

Compares this object with the specified object for order.

Fields

public static final LocalDate MAX

The maximum supported LocalDate, '+999999999-12-31'. This could be used by an application as a "far future" date.

public static final LocalDate MIN

The minimum supported LocalDate, '-999999999-01-01'. This could be used by an application as a "far past" date.

Public Methods

public Temporal adjustInto (Temporal temporal)

Adjusts the specified temporal object to have the same date as this object.

This returns a temporal object of the same observable type as the input with the date changed to be the same as this.

The adjustment is equivalent to using Temporal.with(TemporalField, long) passing ChronoField.EPOCH_DAY as the field.

In most cases, it is clearer to reverse the calling pattern by using Temporal.with(TemporalAdjuster):

   // these two lines are equivalent, but the second approach is recommended
   temporal = thisLocalDate.adjustInto(temporal);
   temporal = temporal.with(thisLocalDate);

This instance is immutable and unaffected by this method call.

Parameters

temporal	the target object to be adjusted, not null

Returns

the adjusted object, not null

Throws

DateTimeException	if unable to make the adjustment
ArithmeticException	if numeric overflow occurs

public ZonedDateTime atStartOfDay (ZoneId zone)

Returns a zoned date-time from this date at the earliest valid time according to the rules in the time-zone.

Time-zone rules, such as daylight savings, mean that not every local date-time is valid for the specified zone, thus the local date-time may not be midnight.

In most cases, there is only one valid offset for a local date-time. In the case of an overlap, there are two valid offsets, and the earlier one is used, corresponding to the first occurrence of midnight on the date. In the case of a gap, the zoned date-time will represent the instant just after the gap.

If the zone ID is a ZoneOffset, then the result always has a time of midnight.

To convert to a specific time in a given time-zone call atTime(LocalTime) followed by LocalDateTime.atZone(ZoneId).

Parameters

zone	the zone ID to use, not null

Returns

the zoned date-time formed from this date and the earliest valid time for the zone, not null

public LocalDateTime atStartOfDay ()

Combines this date with the time of midnight to create a LocalDateTime at the start of this date.

This returns a LocalDateTime formed from this date at the time of midnight, 00:00, at the start of this date.

Returns

the local date-time of midnight at the start of this date, not null

public OffsetDateTime atTime (OffsetTime time)

Combines this date with an offset time to create an OffsetDateTime.

This returns an OffsetDateTime formed from this date at the specified time. All possible combinations of date and time are valid.

Parameters

time	the time to combine with, not null

Returns

the offset date-time formed from this date and the specified time, not null

public LocalDateTime atTime (int hour, int minute)

Combines this date with a time to create a LocalDateTime.

This returns a LocalDateTime formed from this date at the specified hour and minute. The seconds and nanosecond fields will be set to zero. The individual time fields must be within their valid range. All possible combinations of date and time are valid.

Parameters

hour	the hour-of-day to use, from 0 to 23
minute	the minute-of-hour to use, from 0 to 59

Returns

the local date-time formed from this date and the specified time, not null

Throws

DateTimeException	if the value of any field is out of range

public LocalDateTime atTime (int hour, int minute, int second)

Combines this date with a time to create a LocalDateTime.

This returns a LocalDateTime formed from this date at the specified hour, minute and second. The nanosecond field will be set to zero. The individual time fields must be within their valid range. All possible combinations of date and time are valid.

Parameters

hour	the hour-of-day to use, from 0 to 23
minute	the minute-of-hour to use, from 0 to 59
second	the second-of-minute to represent, from 0 to 59

Returns

the local date-time formed from this date and the specified time, not null

Throws

DateTimeException	if the value of any field is out of range

public LocalDateTime atTime (int hour, int minute, int second, int nanoOfSecond)

Combines this date with a time to create a LocalDateTime.

This returns a LocalDateTime formed from this date at the specified hour, minute, second and nanosecond. The individual time fields must be within their valid range. All possible combinations of date and time are valid.

Parameters

hour	the hour-of-day to use, from 0 to 23
minute	the minute-of-hour to use, from 0 to 59
second	the second-of-minute to represent, from 0 to 59
nanoOfSecond	the nano-of-second to represent, from 0 to 999,999,999

Returns

the local date-time formed from this date and the specified time, not null

Throws

DateTimeException	if the value of any field is out of range

public LocalDateTime atTime (LocalTime time)

Combines this date with a time to create a LocalDateTime.

This returns a LocalDateTime formed from this date at the specified time. All possible combinations of date and time are valid.

Parameters

time	the time to combine with, not null

Returns

the local date-time formed from this date and the specified time, not null

public int compareTo (ChronoLocalDate other)

Compares this date to another date.

The comparison is primarily based on the date, from earliest to latest. It is "consistent with equals", as defined by Comparable.

If all the dates being compared are instances of LocalDate, then the comparison will be entirely based on the date. If some dates being compared are in different chronologies, then the chronology is also considered, see Comparable.compareTo(T).

Parameters

other	the other date to compare to, not null

Returns

the comparator value, negative if less, positive if greater

public boolean equals (Object obj)

Checks if this date is equal to another date.

Compares this LocalDate with another ensuring that the date is the same.

Only objects of type LocalDate are compared, other types return false. To compare the dates of two TemporalAccessor instances, including dates in two different chronologies, use ChronoField.EPOCH_DAY as a comparator.

Parameters

obj	the object to check, null returns false

Returns

true if this is equal to the other date

public String format (DateTimeFormatter formatter)

Formats this date using the specified formatter.

This date will be passed to the formatter to produce a string.

Parameters

formatter	the formatter to use, not null

Returns

the formatted date string, not null

Throws

DateTimeException	if an error occurs during printing

public static LocalDate from (TemporalAccessor temporal)

Obtains an instance of LocalDate from a temporal object.

This obtains a local date based on the specified temporal. A TemporalAccessor represents an arbitrary set of date and time information, which this factory converts to an instance of LocalDate.

The conversion uses the TemporalQueries.localDate() query, which relies on extracting the EPOCH_DAY field.

This method matches the signature of the functional interface TemporalQuery allowing it to be used as a query via method reference, LocalDate::from.

Parameters

temporal	the temporal object to convert, not null

Returns

the local date, not null

Throws

DateTimeException	if unable to convert to a `LocalDate`

public int get (TemporalField field)

Gets the value of the specified field from this date as an int.

This queries this date for the value of the specified field. The returned value will always be within the valid range of values for the field. If it is not possible to return the value, because the field is not supported or for some other reason, an exception is thrown.

If the field is a ChronoField then the query is implemented here. The supported fields will return valid values based on this date, except EPOCH_DAY and PROLEPTIC_MONTH which are too large to fit in an int and throw a DateTimeException. All other ChronoField instances will throw an UnsupportedTemporalTypeException.

If the field is not a ChronoField, then the result of this method is obtained by invoking TemporalField.getFrom(TemporalAccessor) passing this as the argument. Whether the value can be obtained, and what the value represents, is determined by the field.

Parameters

field	the field to get, not null

Returns

the value for the field

Throws

DateTimeException	if a value for the field cannot be obtained or the value is outside the range of valid values for the field
UnsupportedTemporalTypeException	if the field is not supported or the range of values exceeds an `int`
ArithmeticException	if numeric overflow occurs

public IsoChronology getChronology ()

Gets the chronology of this date, which is the ISO calendar system.

The Chronology represents the calendar system in use. The ISO-8601 calendar system is the modern civil calendar system used today in most of the world. It is equivalent to the proleptic Gregorian calendar system, in which today's rules for leap years are applied for all time.

Returns

the ISO chronology, not null

public int getDayOfMonth ()

Gets the day-of-month field.

This method returns the primitive int value for the day-of-month.

Returns

the day-of-month, from 1 to 31

public DayOfWeek getDayOfWeek ()

Gets the day-of-week field, which is an enum DayOfWeek.

This method returns the enum DayOfWeek for the day-of-week. This avoids confusion as to what int values mean. If you need access to the primitive int value then the enum provides the int value.

Additional information can be obtained from the DayOfWeek. This includes textual names of the values.

Returns

the day-of-week, not null

public int getDayOfYear ()

Gets the day-of-year field.

This method returns the primitive int value for the day-of-year.

Returns

the day-of-year, from 1 to 365, or 366 in a leap year

public Era getEra ()

Gets the era applicable at this date.

The official ISO-8601 standard does not define eras, however IsoChronology does. It defines two eras, 'CE' from year one onwards and 'BCE' from year zero backwards. Since dates before the Julian-Gregorian cutover are not in line with history, the cutover between 'BCE' and 'CE' is also not aligned with the commonly used eras, often referred to using 'BC' and 'AD'.

Users of this class should typically ignore this method as it exists primarily to fulfill the ChronoLocalDate contract where it is necessary to support the Japanese calendar system.

The returned era will be a singleton capable of being compared with the constants in IsoChronology using the == operator.

Returns

the IsoChronology era constant applicable at this date, not null

public long getLong (TemporalField field)

Gets the value of the specified field from this date as a long.

This queries this date for the value of the specified field. If it is not possible to return the value, because the field is not supported or for some other reason, an exception is thrown.

If the field is a ChronoField then the query is implemented here. The supported fields will return valid values based on this date. All other ChronoField instances will throw an UnsupportedTemporalTypeException.

Parameters

field	the field to get, not null

Returns

the value for the field

Throws

DateTimeException	if a value for the field cannot be obtained
UnsupportedTemporalTypeException	if the field is not supported
ArithmeticException	if numeric overflow occurs

public Month getMonth ()

Gets the month-of-year field using the Month enum.

This method returns the enum Month for the month. This avoids confusion as to what int values mean. If you need access to the primitive int value then the enum provides the int value.

Returns

the month-of-year, not null

public int getMonthValue ()

Gets the month-of-year field from 1 to 12.

This method returns the month as an int from 1 to 12. Application code is frequently clearer if the enum Month is used by calling getMonth().

Returns

the month-of-year, from 1 to 12

public int getYear ()

Gets the year field.

This method returns the primitive int value for the year.

The year returned by this method is proleptic as per get(YEAR). To obtain the year-of-era, use get(YEAR_OF_ERA).

Returns

the year, from MIN_YEAR to MAX_YEAR

public int hashCode ()

A hash code for this date.

Returns

a suitable hash code

public boolean isAfter (ChronoLocalDate other)

Checks if this date is after the specified date.

This checks to see if this date represents a point on the local time-line after the other date.

   LocalDate a = LocalDate.of(2012, 6, 30);
   LocalDate b = LocalDate.of(2012, 7, 1);
   a.isAfter(b) == false
   a.isAfter(a) == false
   b.isAfter(a) == true

This method only considers the position of the two dates on the local time-line. It does not take into account the chronology, or calendar system. This is different from the comparison in compareTo(ChronoLocalDate), but is the same approach as ChronoLocalDate.timeLineOrder().

Parameters

other	the other date to compare to, not null

Returns

true if this date is after the specified date

public boolean isBefore (ChronoLocalDate other)

Checks if this date is before the specified date.

This checks to see if this date represents a point on the local time-line before the other date.

   LocalDate a = LocalDate.of(2012, 6, 30);
   LocalDate b = LocalDate.of(2012, 7, 1);
   a.isBefore(b) == true
   a.isBefore(a) == false
   b.isBefore(a) == false

Parameters

other	the other date to compare to, not null

Returns

true if this date is before the specified date

public boolean isEqual (ChronoLocalDate other)

Checks if this date is equal to the specified date.

This checks to see if this date represents the same point on the local time-line as the other date.

   LocalDate a = LocalDate.of(2012, 6, 30);
   LocalDate b = LocalDate.of(2012, 7, 1);
   a.isEqual(b) == false
   a.isEqual(a) == true
   b.isEqual(a) == false

This method only considers the position of the two dates on the local time-line. It does not take into account the chronology, or calendar system. This is different from the comparison in compareTo(ChronoLocalDate) but is the same approach as ChronoLocalDate.timeLineOrder().

Parameters

other	the other date to compare to, not null

Returns

true if this date is equal to the specified date

public boolean isLeapYear ()

Checks if the year is a leap year, according to the ISO proleptic calendar system rules.

This method applies the current rules for leap years across the whole time-line. In general, a year is a leap year if it is divisible by four without remainder. However, years divisible by 100, are not leap years, with the exception of years divisible by 400 which are.

For example, 1904 is a leap year it is divisible by 4. 1900 was not a leap year as it is divisible by 100, however 2000 was a leap year as it is divisible by 400.

The calculation is proleptic - applying the same rules into the far future and far past. This is historically inaccurate, but is correct for the ISO-8601 standard.

Returns

true if the year is leap, false otherwise

public boolean isSupported (TemporalUnit unit)

Checks if the specified unit is supported.

This checks if the specified unit can be added to, or subtracted from, this date. If false, then calling the plus(long, TemporalUnit) and minus methods will throw an exception.

If the unit is a ChronoUnit then the query is implemented here. The supported units are:

DAYS
WEEKS
MONTHS
YEARS
DECADES
CENTURIES
MILLENNIA
ERAS

All other ChronoUnit instances will return false.

If the unit is not a ChronoUnit, then the result of this method is obtained by invoking TemporalUnit.isSupportedBy(Temporal) passing this as the argument. Whether the unit is supported is determined by the unit.

Parameters

unit	the unit to check, null returns false

Returns

true if the unit can be added/subtracted, false if not

public boolean isSupported (TemporalField field)

Checks if the specified field is supported.

This checks if this date can be queried for the specified field. If false, then calling the range, get and with(TemporalField, long) methods will throw an exception.

If the field is a ChronoField then the query is implemented here. The supported fields are:

DAY_OF_WEEK
ALIGNED_DAY_OF_WEEK_IN_MONTH
ALIGNED_DAY_OF_WEEK_IN_YEAR
DAY_OF_MONTH
DAY_OF_YEAR
EPOCH_DAY
ALIGNED_WEEK_OF_MONTH
ALIGNED_WEEK_OF_YEAR
MONTH_OF_YEAR
PROLEPTIC_MONTH
YEAR_OF_ERA
YEAR
ERA

All other ChronoField instances will return false.

If the field is not a ChronoField, then the result of this method is obtained by invoking TemporalField.isSupportedBy(TemporalAccessor) passing this as the argument. Whether the field is supported is determined by the field.

Parameters

field	the field to check, null returns false

Returns

true if the field is supported on this date, false if not

public int lengthOfMonth ()

Returns the length of the month represented by this date.

This returns the length of the month in days. For example, a date in January would return 31.

Returns

the length of the month in days

LocalDate

Field Summary

Public Method Summary

Inherited Method Summary

Fields

public static final LocalDate MAX

public static final LocalDate MIN

Public Methods

public Temporal adjustInto (Temporal temporal)

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public ZonedDateTime atStartOfDay (ZoneId zone)

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public LocalDateTime atStartOfDay ()

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public OffsetDateTime atTime (OffsetTime time)

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public LocalDateTime atTime (int hour, int minute)

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public LocalDateTime atTime (int hour, int minute, int second)

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public LocalDateTime atTime (int hour, int minute, int second, int nanoOfSecond)

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public LocalDateTime atTime (LocalTime time)

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public int compareTo (ChronoLocalDate other)

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public boolean equals (Object obj)

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public String format (DateTimeFormatter formatter)

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public static LocalDate from (TemporalAccessor temporal)

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public int get (TemporalField field)

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public IsoChronology getChronology ()

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public int getDayOfMonth ()

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public DayOfWeek getDayOfWeek ()

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public int getDayOfYear ()

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public Era getEra ()

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public long getLong (TemporalField field)

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Throws

public Month getMonth ()

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See Also

public int getMonthValue ()

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See Also

public int getYear ()

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public int hashCode ()

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public boolean isAfter (ChronoLocalDate other)

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