- 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.
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 java.lang.Enum
Enum.EnumDesc<E extends Enum<E>>
-
Enum Constant Summary
-
Method Summary
Modifier and TypeMethodDescriptionint
getValue()
Gets the numeric eraint
value.static IsoEra
of(int isoEra)
Obtains an instance ofIsoEra
from anint
value.static IsoEra
Returns the enum constant of this type with the specified name.static IsoEra[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.Methods declared in class java.lang.Enum
clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
Methods declared in interface java.time.chrono.Era
adjustInto, get, getDisplayName, getLong, isSupported, query, range
-
Enum Constant Details
-
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.
-
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Method Details
-
values
Returns an array containing the constants of this enum type, in the order they are declared.- Returns:
- an array containing the constants of this enum type, in the order they are declared
-
valueOf
Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified nameNullPointerException
- if the argument is null
-
of
Obtains an instance ofIsoEra
from anint
value.IsoEra
is an enum representing the ISO eras of BCE/CE. This factory allows the enum to be obtained from theint
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 eraint
value.The era BCE has the value 0, while the era CE has the value 1.
-