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.
public static final IsoEra BCE
The singleton instance for the era before the current one, 'Before Current Era', which has the numeric value 0.
public static final IsoEra CE
The singleton instance for the current era, 'Current Era', which has the numeric value 1.
public static IsoEra[] values()
Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
for (IsoEra c : IsoEra.values()) System.out.println(c);
public static IsoEra valueOf(String name)
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.)
name
- the name of the enum constant to be returned.IllegalArgumentException
- if this enum type has no constant with the specified nameNullPointerException
- if the argument is nullpublic 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.
isoEra
- the BCE/CE value to represent, from 0 (BCE) to 1 (CE)DateTimeException
- if the value is invalidpublic int getValue()
Gets the numeric era int
value.
The era BCE has the value 0, while the era CE has the value 1.
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