Module java.base
Package java.time.chrono

# Enum Class MinguoEra

java.lang.Object
java.lang.Enum<MinguoEra>
java.time.chrono.MinguoEra

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

public enum MinguoEra extends Enum<MinguoEra> implements Era
An era in the Minguo calendar system.

The Minguo calendar system has two eras. The current era, for years from 1 onwards, is known as the 'Republic of China' era. All previous years, zero or earlier in the proleptic count or one and greater in the year-of-era count, are part of the 'Before Republic of China' era.

Minguo years and eras
year-of-era | era | proleptic-year | ISO proleptic-year
--- | --- | --- | ---
2 | ROC | 2 | 1913
1 | ROC | 1 | 1912
1 | BEFORE_ROC | 0 | 1911
2 | BEFORE_ROC | -1 | 1910

Do not use `ordinal()` to obtain the numeric representation of `MinguoEra`. 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

  Enum Constants
  Enum Constant
  Description
  `BEFORE_ROC`
  The singleton instance for the era before the current one, 'Before Republic of China Era', which has the numeric value 0.
  `ROC`
  The singleton instance for the current era, 'Republic of China Era', which has the numeric value 1.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `String`
  `getDisplayName(TextStyle style, Locale locale)`
  Gets the textual representation of this era.
  `int`
  `getValue()`
  Gets the numeric era `int` value.
  `static MinguoEra`
  `of(int minguoEra)`
  Obtains an instance of `MinguoEra` from an `int` value.
  `static MinguoEra`
  `valueOf(String name)`
  Returns the enum constant of this class with the specified name.
  `static MinguoEra[]`
  `values()`
  Returns an array containing the constants of this enum class, 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 class java.lang.Object

  `getClass, notify, notifyAll, wait, wait, wait`

  ### Methods declared in interface java.time.chrono.Era

  `adjustInto, get, getLong, isSupported, query, range`

- ## Enum Constant Details

  - ### BEFORE_ROC

    public static final MinguoEra BEFORE_ROC
    The singleton instance for the era before the current one, 'Before Republic of China Era', which has the numeric value 0.

  - ### ROC

    public static final MinguoEra ROC
    The singleton instance for the current era, 'Republic of China Era', which has the numeric value 1.

- ## Method Details

  - ### values

    public static MinguoEra[] 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 MinguoEra 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 MinguoEra of(int minguoEra)
    Obtains an instance of `MinguoEra` from an `int` value.

    `MinguoEra` is an enum representing the Minguo eras of BEFORE_ROC/ROC. This factory allows the enum to be obtained from the `int` value.

    Parameters:
      `minguoEra` - the BEFORE_ROC/ROC value to represent, from 0 (BEFORE_ROC) to 1 (ROC)
    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 BEFORE_ROC has the value 0, while the era ROC has the value 1.

    Specified by:
      `getValue` in interface `Era`
    Returns:
      the era value, from 0 (BEFORE_ROC) to 1 (ROC)

  - ### getDisplayName

    public String getDisplayName(TextStyle style, Locale locale)
    Gets the textual representation of this era.

    This returns the textual name used to identify the era, suitable for presentation to the user. The parameters control the style of the returned text and the locale.

    If no textual mapping is found then the `numeric value` is returned.

    Specified by:
      `getDisplayName` in interface `Era`
    Parameters:
      `style` - the style of the text required, not null
      `locale` - the locale to use, not null
    Returns:
      the text value of the era, not null