Enum IsoEra
- java.lang.Object
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- java.lang.Enum<IsoEra>
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- java.time.chrono.IsoEra
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- All Implemented Interfaces:
- Serializable, Comparable<IsoEra>, 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 ofIsoEra. UsegetValue()instead.- Implementation Requirements:
- This is an immutable and thread-safe enum.
- Since:
- 1.8
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Enum Constant Summary
Enum Constants Enum Constant and Description BCEThe singleton instance for the era before the current one, 'Before Current Era', which has the numeric value 0.CEThe singleton instance for the current era, 'Current Era', which has the numeric value 1.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method and Description intgetValue()Gets the numeric eraintvalue.static IsoEraof(int isoEra)Obtains an instance ofIsoErafrom anintvalue.static IsoEravalueOf(String name)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 inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf
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Methods inherited from interface java.time.chrono.Era
adjustInto, get, getDisplayName, getLong, isSupported, query, range
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Enum Constant Detail
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.
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Method Detail
values
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);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
valueOf
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.)- Parameters:
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name- the name of the enum constant to be returned. - Returns:
- the enum constant with the specified name
- Throws:
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IllegalArgumentException- if this enum type has no constant with the specified name -
NullPointerException- if the argument is null
of
public static IsoEra of(int isoEra)
Obtains an instance ofIsoErafrom anintvalue.IsoErais an enum representing the ISO eras of BCE/CE. This factory allows the enum to be obtained from theintvalue.- Parameters:
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isoEra- the BCE/CE value to represent, from 0 (BCE) to 1 (CE) - Returns:
- the era singleton, not null
- Throws:
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DateTimeException- if the value is invalid
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