The singleton instance for the era BCE, 'Before Current Era'.
The singleton instance for the era BCE, 'Before Current Era'. The 'ISO' part of the name
emphasizes that this differs from the BCE era in the Gregorian calendar system. This has the
numeric value of 0.
The singleton instance for the era CE, 'Current Era'.
The singleton instance for the era CE, 'Current Era'. The 'ISO' part of the name emphasizes
that this differs from the CE era in the Gregorian calendar system. This has the numeric value
of 1.
Obtains an instance of IsoEra from an int value.
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.
the BCE/CE value to represent, from 0 (BCE) to 1 (CE)
the era singleton, not null
DateTimeException
if the value is invalid