Java : JapaneseEra with Examples

final var locale = Locale.getDefault();
System.out.println(locale.toLanguageTag()); // en-US

{
    final var era = JapaneseEra.SHOWA;
    System.out.println(era.getValue()); // 1

    final var name = era.getDisplayName(TextStyle.FULL, locale);
    System.out.println(name); // Shōwa
}
{
    final var era = JapaneseEra.HEISEI;
    System.out.println(era.getValue()); // 2

    final var name = era.getDisplayName(TextStyle.FULL, locale);
    System.out.println(name); // Heisei
}
{
    final var era = JapaneseEra.REIWA;
    System.out.println(era.getValue()); // 3

    final var name = era.getDisplayName(TextStyle.FULL, locale);
    System.out.println(name); // Reiwa
}

final var japaneseDate1 = JapaneseDate.of(1989, 1, 8);
System.out.println(japaneseDate1); // Japanese Heisei 1-01-08
System.out.println(japaneseDate1.getEra()); // Heisei

final var japaneseDate2 = JapaneseDate.of(2019, 4, 30);
System.out.println(japaneseDate2); // Japanese Heisei 31-04-30
System.out.println(japaneseDate2.getEra()); // Heisei

final var japaneseDate3 = JapaneseDate.of(2019, 5, 1);
System.out.println(japaneseDate3); // Japanese Reiwa 1-05-01
System.out.println(japaneseDate3.getEra()); // Reiwa

static final JapaneseEra HEISEI

The singleton instance for the 'Heisei' era (1989-01-08 - 2019-04-30) which has the value 2.

final var era = JapaneseEra.HEISEI;
System.out.println(era); // Heisei
System.out.println(era.getValue()); // 2

static final JapaneseEra MEIJI

The singleton instance for the 'Meiji' era (1868-01-01 - 1912-07-29) which has the value -1.

final var era = JapaneseEra.MEIJI;
System.out.println(era); // Meiji
System.out.println(era.getValue()); // -1

static final JapaneseEra REIWA

The singleton instance for the 'Reiwa' era (2019-05-01 - ) which has the value 3.

final var era = JapaneseEra.REIWA;
System.out.println(era); // Reiwa
System.out.println(era.getValue()); // 3

static final JapaneseEra SHOWA

The singleton instance for the 'Showa' era (1926-12-25 - 1989-01-07) which has the value 1.

final var era = JapaneseEra.SHOWA;
System.out.println(era); // Showa
System.out.println(era.getValue()); // 1

static final JapaneseEra TAISHO

The singleton instance for the 'Taisho' era (1912-07-30 - 1926-12-24) which has the value 0.

final var era = JapaneseEra.TAISHO;
System.out.println(era); // Taisho
System.out.println(era.getValue()); // 0

String getDisplayName (TextStyle style, Locale locale)

Gets the textual representation of this era.

final var era = JapaneseEra.HEISEI;
System.out.println(era); // Heisei

final var name1 = era.getDisplayName(TextStyle.FULL, Locale.US);
System.out.println(name1); // Heisei

final var name2 = era.getDisplayName(TextStyle.FULL, Locale.JAPAN);
System.out.println(name2); // 平成

final var era = JapaneseEra.REIWA;
System.out.println(era); // Reiwa

final var name1 = era.getDisplayName(TextStyle.FULL, Locale.US);
System.out.println(name1); // Reiwa

final var name2 = era.getDisplayName(TextStyle.FULL, Locale.JAPAN);
System.out.println(name2); // 令和

int getValue ()

Gets the numeric era int value.

for (final var era : JapaneseEra.values()) {
    System.out.printf("%s : value = %d%n", era, era.getValue());
}

// Result
// ↓
//Meiji : value = -1
//Taisho : value = 0
//Showa : value = 1
//Heisei : value = 2
//Reiwa : value = 3

static JapaneseEra of (int japaneseEra)

Obtains an instance of JapaneseEra from an int value.

final var era1 = JapaneseEra.of(2);
System.out.println(era1); // Heisei

final var era2 = JapaneseEra.of(3);
System.out.println(era2); // Reiwa

ValueRange range (TemporalField field)

Gets the range of valid values for the specified field.

final var era = JapaneseEra.REIWA;
System.out.println(era); // Reiwa

System.out.println(era.range(ChronoField.ERA)); // -1 - 3

static JapaneseEra valueOf (String japaneseEra)

Returns the JapaneseEra with the name.

final var era1 = JapaneseEra.valueOf("Heisei");
System.out.println(era1); // Heisei

final var era2 = JapaneseEra.valueOf("Reiwa");
System.out.println(era2); // Reiwa

static JapaneseEra[] values ()

Returns an array of JapaneseEras.

for (final var era : JapaneseEra.values()) {
    System.out.printf("%s : value = %d%n", era, era.getValue());
}

// Result
// ↓
//Meiji : value = -1
//Taisho : value = 0
//Showa : value = 1
//Heisei : value = 2
//Reiwa : value = 3

adjustInto, get, getLong, isSupported, query

Please see the link below.

• Era with Examples