Enum Class IsoEra

java.lang.Object

java.lang.Enum<IsoEra>

java.time.chrono.IsoEra

All Implemented Interfaces:: Serializable, Comparable<IsoEra>, Constable, Era, TemporalAccessor, TemporalAdjuster

public enum IsoEra extends Enum<IsoEra> implements Era

An era in the ISO calendar system.

The ISO-8601 standard does not define eras. A definition has therefore been created with two eras - 'Current era' (CE) for years on or after 0001-01-01 (ISO), and 'Before current era' (BCE) for years before that.

ISO years and eras
year-of-era	era	proleptic-year
2	CE	2
1	CE	1
1	BCE	0
2	BCE	-1

Do not use ordinal() to obtain the numeric representation of IsoEra. Use getValue() instead.

Implementation Requirements:: This is an immutable and thread-safe enum.
Since:: 1.8

Nested Class Summary

Nested classes/interfaces declared in class Enum

Enum.EnumDesc<E>

Modifier and Type	Class	Description
`static final class`	`Enum.EnumDesc<E extends Enum<E>>`	A nominal descriptor for an `enum` constant.

Enum Constant Summary

Enum Constant	Description
`BCE`	The singleton instance for the era before the current one, 'Before Current Era', which has the numeric value 0.
`CE`	The singleton instance for the current era, 'Current Era', which has the numeric value 1.

Method Summary

Modifier and Type	Method	Description
`int`	`getValue()`	Gets the numeric era `int` value.
`static IsoEra`	`of(int isoEra)`	Obtains an instance of `IsoEra` from an `int` value.
`static IsoEra`	`valueOf(String name)`	Returns the enum constant of this class with the specified name.
`static IsoEra[]`	`values()`	Returns an array containing the constants of this enum class, in the order they are declared.

Methods declared in class Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Modifier and Type	Method	Description
`protected final Object`	`clone()`	Throws CloneNotSupportedException.
`final int`	`compareTo(IsoEra o)`	Compares this enum with the specified object for order.
`final Optional<Enum.EnumDesc<IsoEra>>`	`describeConstable()`	Returns an enum descriptor `EnumDesc` for this instance, if one can be constructed, or an empty `Optional` if one cannot be.
`final boolean`	`equals(Object other)`	Returns true if the specified object is equal to this enum constant.
`protected final void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization has been deprecated for removal.
`final Class<IsoEra>`	`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> enumClass, String name)`	Returns the enum constant of the specified enum class with the specified name.

Methods declared in class Object

getClass, notify, notifyAll, wait, wait, wait

Modifier and Type	Method	Description
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`final void`	`notify()`	Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()`	Wakes up all threads that are waiting on this object's monitor.
`final void`	`wait()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Methods declared in interface Era

adjustInto, get, getDisplayName, getLong, isSupported, query, range

Modifier and Type	Method	Description
`default Temporal`	`adjustInto(Temporal temporal)`	Adjusts the specified temporal object to have the same era as this object.
`default int`	`get(TemporalField field)`	Gets the value of the specified field from this era as an `int`.
`default String`	`getDisplayName(TextStyle style, Locale locale)`	Gets the textual representation of this era.
`default long`	`getLong(TemporalField field)`	Gets the value of the specified field from this era as a `long`.
`default boolean`	`isSupported(TemporalField field)`	Checks if the specified field is supported.
`default <R> R`	`query(TemporalQuery<R> query)`	Queries this era using the specified query.
`default ValueRange`	`range(TemporalField field)`	Gets the range of valid values for the specified field.

Enum Constant Details

BCE

public static final IsoEra BCE

The singleton instance for the era before the current one, 'Before Current Era', which has the numeric value 0.

CE

public static final IsoEra CE

The singleton instance for the current era, 'Current Era', which has the numeric value 1.

Method Details

values

public static IsoEra[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:: an array containing the constants of this enum class, in the order they are declared

valueOf

public static IsoEra valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:: name - the name of the enum constant to be returned.
Returns:: the enum constant with the specified name
Throws:: IllegalArgumentException - if this enum class has no constant with the specified name; NullPointerException - if the argument is null

of

public static IsoEra of(int isoEra)

Obtains an instance of IsoEra from an int value.

IsoEra is an enum representing the ISO eras of BCE/CE. This factory allows the enum to be obtained from the int value.

Parameters:: isoEra - the BCE/CE value to represent, from 0 (BCE) to 1 (CE)
Returns:: the era singleton, not null
Throws:: DateTimeException - if the value is invalid

getValue

public int getValue()

Gets the numeric era int value.

The era BCE has the value 0, while the era CE has the value 1.

Specified by:: getValue in interface Era
Returns:: the era value, from 0 (BCE) to 1 (CE)

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