ChronoUnit

public final enum ChronoUnit extends Enum<ChronoUnit>
implements TemporalUnit

A standard set of date periods units.

This set of units provide unit-based access to manipulate a date, time or date-time. The standard set of units can be extended by implementing TemporalUnit.

These units are intended to be applicable in multiple calendar systems. For example, most non-ISO calendar systems define units of years, months and days, just with slightly different rules. The documentation of each unit explains how it operates.

Inherited Method Summary

From class java.lang.Enum

final Object	clone() Throws CloneNotSupportedException.
final int	compareTo(ChronoUnit o) Compares this enum with the specified object for order.
final boolean	equals(Object other) Returns true if the specified object is equal to this enum constant.
final void	finalize() enum classes cannot have finalize methods.
final Class<ChronoUnit>	getDeclaringClass() Returns the Class object corresponding to this enum constant's enum type.
final int	hashCode() Returns a hash code for this enum constant.
final String	name() Returns the name of this enum constant, exactly as declared in its enum declaration.
final int	ordinal() Returns the ordinal of this enumeration constant (its position in its enum declaration, where the initial constant is assigned an ordinal of zero).
String	toString() Returns the name of this enum constant, as contained in the declaration.
static <T extends Enum<T>> T	valueOf(Class<T> enumType, String name) Returns the enum constant of the specified enum type with the specified name.

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.lang.Comparable

abstract int

compareTo(ChronoUnit o) Compares this object with the specified object for order.

From interface java.time.temporal.TemporalUnit

abstract <R extends Temporal> R	addTo(R temporal, long amount) Returns a copy of the specified temporal object with the specified period added.
abstract long	between(Temporal temporal1Inclusive, Temporal temporal2Exclusive) Calculates the amount of time between two temporal objects.
abstract Duration	getDuration() Gets the duration of this unit, which may be an estimate.
abstract boolean	isDateBased() Checks if this unit represents a component of a date.
abstract boolean	isDurationEstimated() Checks if the duration of the unit is an estimate.
boolean	isSupportedBy(Temporal temporal) Checks if this unit is supported by the specified temporal object.
abstract boolean	isTimeBased() Checks if this unit represents a component of a time.
abstract String	toString() Gets a descriptive name for the unit.

Enum Values

public static final ChronoUnit CENTURIES

Unit that represents the concept of a century. For the ISO calendar system, it is equal to 100 years.

When used with other calendar systems it must correspond to an integral number of days and is normally an integral number of years.

public static final ChronoUnit DAYS

Unit that represents the concept of a day. For the ISO calendar system, it is the standard day from midnight to midnight. The estimated duration of a day is 24 Hours.

When used with other calendar systems it must correspond to the day defined by the rising and setting of the Sun on Earth. It is not required that days begin at midnight - when converting between calendar systems, the date should be equivalent at midday.

public static final ChronoUnit DECADES

Unit that represents the concept of a decade. For the ISO calendar system, it is equal to 10 years.

When used with other calendar systems it must correspond to an integral number of days and is normally an integral number of years.

public static final ChronoUnit ERAS

Unit that represents the concept of an era. The ISO calendar system doesn't have eras thus it is impossible to add an era to a date or date-time. The estimated duration of the era is artificially defined as 1,000,000,000 Years.

When used with other calendar systems there are no restrictions on the unit.

public static final ChronoUnit FOREVER

Artificial unit that represents the concept of forever. This is primarily used with TemporalField to represent unbounded fields such as the year or era. The estimated duration of the era is artificially defined as the largest duration supported by Duration.

public static final ChronoUnit HALF_DAYS

Unit that represents the concept of half a day, as used in AM/PM. For the ISO calendar system, it is equal to 12 hours.

public static final ChronoUnit HOURS

Unit that represents the concept of an hour. For the ISO calendar system, it is equal to 60 minutes.

public static final ChronoUnit MICROS

Unit that represents the concept of a microsecond. For the ISO calendar system, it is equal to the 1,000,000th part of the second unit.

public static final ChronoUnit MILLENNIA

Unit that represents the concept of a millennium. For the ISO calendar system, it is equal to 1000 years.

When used with other calendar systems it must correspond to an integral number of days and is normally an integral number of years.

public static final ChronoUnit MILLIS

Unit that represents the concept of a millisecond. For the ISO calendar system, it is equal to the 1000th part of the second unit.

public static final ChronoUnit MINUTES

Unit that represents the concept of a minute. For the ISO calendar system, it is equal to 60 seconds.

public static final ChronoUnit MONTHS

Unit that represents the concept of a month. For the ISO calendar system, the length of the month varies by month-of-year. The estimated duration of a month is one twelfth of 365.2425 Days.

When used with other calendar systems it must correspond to an integral number of days.

public static final ChronoUnit NANOS

Unit that represents the concept of a nanosecond, the smallest supported unit of time. For the ISO calendar system, it is equal to the 1,000,000,000th part of the second unit.

public static final ChronoUnit SECONDS

Unit that represents the concept of a second. For the ISO calendar system, it is equal to the second in the SI system of units, except around a leap-second.

public static final ChronoUnit WEEKS

Unit that represents the concept of a week. For the ISO calendar system, it is equal to 7 days.

When used with other calendar systems it must correspond to an integral number of days.

public static final ChronoUnit YEARS

Unit that represents the concept of a year. For the ISO calendar system, it is equal to 12 months. The estimated duration of a year is 365.2425 Days.

When used with other calendar systems it must correspond to an integral number of days or months roughly equal to a year defined by the passage of the Earth around the Sun.