| /* |
| * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Copyright (c) 2012, Stephen Colebourne & Michael Nascimento Santos |
| * |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * |
| * * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * * Neither the name of JSR-310 nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| package java.time.chrono; |
| |
| import static java.time.temporal.ChronoField.DAY_OF_MONTH; |
| import static java.time.temporal.ChronoField.MONTH_OF_YEAR; |
| import static java.time.temporal.ChronoField.YEAR; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import java.io.Serializable; |
| import java.time.Clock; |
| import java.time.DateTimeException; |
| import java.time.LocalDate; |
| import java.time.LocalTime; |
| import java.time.Period; |
| import java.time.Year; |
| import java.time.ZoneId; |
| import java.time.temporal.ChronoField; |
| import java.time.temporal.TemporalAccessor; |
| import java.time.temporal.TemporalAdjuster; |
| import java.time.temporal.TemporalAmount; |
| import java.time.temporal.TemporalField; |
| import java.time.temporal.TemporalQuery; |
| import java.time.temporal.TemporalUnit; |
| import java.time.temporal.UnsupportedTemporalTypeException; |
| import java.time.temporal.ValueRange; |
| import java.util.Calendar; |
| import java.util.Objects; |
| |
| import sun.util.calendar.LocalGregorianCalendar; |
| |
| /** |
| * A date in the Japanese Imperial calendar system. |
| * <p> |
| * This date operates using the {@linkplain JapaneseChronology Japanese Imperial calendar}. |
| * This calendar system is primarily used in Japan. |
| * <p> |
| * The Japanese Imperial calendar system is the same as the ISO calendar system |
| * apart from the era-based year numbering. The proleptic-year is defined to be |
| * equal to the ISO proleptic-year. |
| * <p> |
| * For example, the Japanese year "Heisei 24" corresponds to ISO year "2012".<br> |
| * Calling {@code japaneseDate.get(YEAR_OF_ERA)} will return 24.<br> |
| * Calling {@code japaneseDate.get(YEAR)} will return 2012.<br> |
| * Calling {@code japaneseDate.get(ERA)} will return 2, corresponding to |
| * {@code JapaneseChronology.ERA_HEISEI}.<br> |
| * |
| * <h3>Specification for implementors</h3> |
| * This class is immutable and thread-safe. |
| * |
| * @since 1.8 |
| */ |
| public final class JapaneseDate |
| extends ChronoDateImpl<JapaneseDate> |
| implements ChronoLocalDate<JapaneseDate>, Serializable { |
| |
| /** |
| * Serialization version. |
| */ |
| private static final long serialVersionUID = -305327627230580483L; |
| |
| /** |
| * The underlying ISO local date. |
| */ |
| private transient final LocalDate isoDate; |
| /** |
| * The JapaneseEra of this date. |
| */ |
| private transient JapaneseEra era; |
| /** |
| * The Japanese imperial calendar year of this date. |
| */ |
| private transient int yearOfEra; |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Obtains the current {@code JapaneseDate} from the system clock in the default time-zone. |
| * <p> |
| * This will query the {@link Clock#systemDefaultZone() system clock} in the default |
| * time-zone to obtain the current date. |
| * <p> |
| * Using this method will prevent the ability to use an alternate clock for testing |
| * because the clock is hard-coded. |
| * |
| * @return the current date using the system clock and default time-zone, not null |
| */ |
| public static JapaneseDate now() { |
| return now(Clock.systemDefaultZone()); |
| } |
| |
| /** |
| * Obtains the current {@code JapaneseDate} from the system clock in the specified time-zone. |
| * <p> |
| * This will query the {@link Clock#system(ZoneId) system clock} to obtain the current date. |
| * Specifying the time-zone avoids dependence on the default time-zone. |
| * <p> |
| * Using this method will prevent the ability to use an alternate clock for testing |
| * because the clock is hard-coded. |
| * |
| * @param zone the zone ID to use, not null |
| * @return the current date using the system clock, not null |
| */ |
| public static JapaneseDate now(ZoneId zone) { |
| return now(Clock.system(zone)); |
| } |
| |
| /** |
| * Obtains the current {@code JapaneseDate} from the specified clock. |
| * <p> |
| * This will query the specified clock to obtain the current date - today. |
| * Using this method allows the use of an alternate clock for testing. |
| * The alternate clock may be introduced using {@linkplain Clock dependency injection}. |
| * |
| * @param clock the clock to use, not null |
| * @return the current date, not null |
| * @throws DateTimeException if the current date cannot be obtained |
| */ |
| public static JapaneseDate now(Clock clock) { |
| return JapaneseChronology.INSTANCE.date(LocalDate.now(clock)); |
| } |
| |
| /** |
| * Obtains a {@code JapaneseDate} representing a date in the Japanese calendar |
| * system from the era, year-of-era, month-of-year and day-of-month fields. |
| * <p> |
| * This returns a {@code JapaneseDate} with the specified fields. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * |
| * @param era the Japanese era, not null |
| * @param yearOfEra the Japanese year-of-era |
| * @param month the Japanese month-of-year, from 1 to 12 |
| * @param dayOfMonth the Japanese day-of-month, from 1 to 31 |
| * @return the date in Japanese calendar system, not null |
| * @throws DateTimeException if the value of any field is out of range, |
| * or if the day-of-month is invalid for the month-year, |
| * or if the date is not a Japanese era |
| */ |
| public static JapaneseDate of(Era era, int yearOfEra, int month, int dayOfMonth) { |
| if (era instanceof JapaneseEra == false) { |
| throw new ClassCastException("Era must be JapaneseEra"); |
| } |
| return JapaneseDate.of((JapaneseEra) era, yearOfEra, month, dayOfMonth); |
| } |
| |
| /** |
| * Obtains a {@code JapaneseDate} representing a date in the Japanese calendar |
| * system from the proleptic-year, month-of-year and day-of-month fields. |
| * <p> |
| * This returns a {@code JapaneseDate} with the specified fields. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * |
| * @param prolepticYear the Japanese proleptic-year |
| * @param month the Japanese month-of-year, from 1 to 12 |
| * @param dayOfMonth the Japanese day-of-month, from 1 to 31 |
| * @return the date in Japanese calendar system, not null |
| * @throws DateTimeException if the value of any field is out of range, |
| * or if the day-of-month is invalid for the month-year |
| */ |
| public static JapaneseDate of(int prolepticYear, int month, int dayOfMonth) { |
| return new JapaneseDate(LocalDate.of(prolepticYear, month, dayOfMonth)); |
| } |
| |
| /** |
| * Obtains a {@code JapaneseDate} representing a date in the Japanese calendar |
| * system from the proleptic-year and day-of-year fields. |
| * <p> |
| * This returns a {@code JapaneseDate} with the specified fields. |
| * The day must be valid for the year, otherwise an exception will be thrown. |
| * |
| * @param prolepticYear the chronology proleptic-year |
| * @param dayOfYear the chronology day-of-year, from 1 to 366 |
| * @return the date in Japanese calendar system, not null |
| * @throws DateTimeException if the value of any field is out of range, |
| * or if the day-of-year is invalid for the year |
| */ |
| public static JapaneseDate ofYearDay(int prolepticYear, int dayOfYear) { |
| LocalDate date = LocalDate.ofYearDay(prolepticYear, dayOfYear); |
| return of(prolepticYear, date.getMonthValue(), date.getDayOfMonth()); |
| } |
| |
| /** |
| * Obtains a {@code JapaneseDate} representing a date in the Japanese calendar |
| * system from the era, year-of-era, month-of-year and day-of-month fields. |
| * <p> |
| * This returns a {@code JapaneseDate} with the specified fields. |
| * The day must be valid for the year and month, otherwise an exception will be thrown. |
| * |
| * @param era the Japanese era, not null |
| * @param yearOfEra the Japanese year-of-era |
| * @param month the Japanese month-of-year, from 1 to 12 |
| * @param dayOfMonth the Japanese day-of-month, from 1 to 31 |
| * @return the date in Japanese calendar system, not null |
| * @throws DateTimeException if the value of any field is out of range, |
| * or if the day-of-month is invalid for the month-year |
| */ |
| static JapaneseDate of(JapaneseEra era, int yearOfEra, int month, int dayOfMonth) { |
| Objects.requireNonNull(era, "era"); |
| LocalGregorianCalendar.Date jdate = JapaneseChronology.JCAL.newCalendarDate(null); |
| jdate.setEra(era.getPrivateEra()).setDate(yearOfEra, month, dayOfMonth); |
| if (!JapaneseChronology.JCAL.validate(jdate)) { |
| throw new DateTimeException("year, month, and day not valid for Era"); |
| } |
| LocalDate date = LocalDate.of(jdate.getNormalizedYear(), month, dayOfMonth); |
| return new JapaneseDate(era, yearOfEra, date); |
| } |
| |
| /** |
| * Obtains a {@code JapaneseDate} from a temporal object. |
| * <p> |
| * This obtains a date in the Japanese calendar system based on the specified temporal. |
| * A {@code TemporalAccessor} represents an arbitrary set of date and time information, |
| * which this factory converts to an instance of {@code JapaneseDate}. |
| * <p> |
| * The conversion typically uses the {@link ChronoField#EPOCH_DAY EPOCH_DAY} |
| * field, which is standardized across calendar systems. |
| * <p> |
| * This method matches the signature of the functional interface {@link TemporalQuery} |
| * allowing it to be used as a query via method reference, {@code JapaneseDate::from}. |
| * |
| * @param temporal the temporal object to convert, not null |
| * @return the date in Japanese calendar system, not null |
| * @throws DateTimeException if unable to convert to a {@code JapaneseDate} |
| */ |
| public static JapaneseDate from(TemporalAccessor temporal) { |
| return JapaneseChronology.INSTANCE.date(temporal); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Creates an instance from an ISO date. |
| * |
| * @param isoDate the standard local date, validated not null |
| */ |
| JapaneseDate(LocalDate isoDate) { |
| LocalGregorianCalendar.Date jdate = toPrivateJapaneseDate(isoDate); |
| this.era = JapaneseEra.toJapaneseEra(jdate.getEra()); |
| this.yearOfEra = jdate.getYear(); |
| this.isoDate = isoDate; |
| } |
| |
| /** |
| * Constructs a {@code JapaneseDate}. This constructor does NOT validate the given parameters, |
| * and {@code era} and {@code year} must agree with {@code isoDate}. |
| * |
| * @param era the era, validated not null |
| * @param year the year-of-era, validated |
| * @param isoDate the standard local date, validated not null |
| */ |
| JapaneseDate(JapaneseEra era, int year, LocalDate isoDate) { |
| this.era = era; |
| this.yearOfEra = year; |
| this.isoDate = isoDate; |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * Gets the chronology of this date, which is the Japanese calendar system. |
| * <p> |
| * The {@code Chronology} represents the calendar system in use. |
| * The era and other fields in {@link ChronoField} are defined by the chronology. |
| * |
| * @return the Japanese chronology, not null |
| */ |
| @Override |
| public JapaneseChronology getChronology() { |
| return JapaneseChronology.INSTANCE; |
| } |
| |
| /** |
| * Gets the era applicable at this date. |
| * <p> |
| * The Japanese calendar system has multiple eras defined by {@link JapaneseEra}. |
| * |
| * @return the era applicable at this date, not null |
| */ |
| @Override |
| public JapaneseEra getEra() { |
| return era; |
| } |
| |
| /** |
| * Returns the length of the month represented by this date. |
| * <p> |
| * This returns the length of the month in days. |
| * Month lengths match those of the ISO calendar system. |
| * |
| * @return the length of the month in days |
| */ |
| @Override |
| public int lengthOfMonth() { |
| return isoDate.lengthOfMonth(); |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| public ValueRange range(TemporalField field) { |
| if (field instanceof ChronoField) { |
| if (isSupported(field)) { |
| ChronoField f = (ChronoField) field; |
| switch (f) { |
| case DAY_OF_MONTH: |
| case ALIGNED_WEEK_OF_MONTH: |
| return isoDate.range(field); |
| case DAY_OF_YEAR: |
| return actualRange(Calendar.DAY_OF_YEAR); |
| case YEAR_OF_ERA: |
| return actualRange(Calendar.YEAR); |
| } |
| return getChronology().range(f); |
| } |
| throw new UnsupportedTemporalTypeException("Unsupported field: " + field.getName()); |
| } |
| return field.rangeRefinedBy(this); |
| } |
| |
| private ValueRange actualRange(int calendarField) { |
| Calendar jcal = Calendar.getInstance(JapaneseChronology.LOCALE); |
| jcal.set(Calendar.ERA, era.getValue() + JapaneseEra.ERA_OFFSET); // TODO: cannot calculate this way for SEIREKI |
| jcal.set(yearOfEra, isoDate.getMonthValue() - 1, isoDate.getDayOfMonth()); |
| return ValueRange.of(jcal.getActualMinimum(calendarField), |
| jcal.getActualMaximum(calendarField)); |
| } |
| |
| @Override |
| public long getLong(TemporalField field) { |
| if (field instanceof ChronoField) { |
| // same as ISO: |
| // DAY_OF_WEEK, ALIGNED_DAY_OF_WEEK_IN_MONTH, DAY_OF_MONTH, EPOCH_DAY, |
| // ALIGNED_WEEK_OF_MONTH, MONTH_OF_YEAR, PROLEPTIC_MONTH, YEAR |
| // |
| // calendar specific fields |
| // ALIGNED_DAY_OF_WEEK_IN_YEAR, DAY_OF_YEAR, ALIGNED_WEEK_OF_YEAR, YEAR_OF_ERA, ERA |
| switch ((ChronoField) field) { |
| case YEAR_OF_ERA: |
| return yearOfEra; |
| case ERA: |
| return era.getValue(); |
| case DAY_OF_YEAR: { |
| LocalGregorianCalendar.Date jdate = toPrivateJapaneseDate(isoDate); |
| return JapaneseChronology.JCAL.getDayOfYear(jdate); |
| } |
| // TODO: ALIGNED_DAY_OF_WEEK_IN_YEAR and ALIGNED_WEEK_OF_YEAR ??? |
| } |
| return isoDate.getLong(field); |
| } |
| return field.getFrom(this); |
| } |
| |
| /** |
| * Returns a {@code LocalGregorianCalendar.Date} converted from the given {@code isoDate}. |
| * |
| * @param isoDate the local date, not null |
| * @return a {@code LocalGregorianCalendar.Date}, not null |
| */ |
| private static LocalGregorianCalendar.Date toPrivateJapaneseDate(LocalDate isoDate) { |
| LocalGregorianCalendar.Date jdate = JapaneseChronology.JCAL.newCalendarDate(null); |
| sun.util.calendar.Era sunEra = JapaneseEra.privateEraFrom(isoDate); |
| int year = isoDate.getYear(); |
| if (sunEra != null) { |
| year -= sunEra.getSinceDate().getYear() - 1; |
| } |
| jdate.setEra(sunEra).setYear(year).setMonth(isoDate.getMonthValue()).setDayOfMonth(isoDate.getDayOfMonth()); |
| JapaneseChronology.JCAL.normalize(jdate); |
| return jdate; |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| public JapaneseDate with(TemporalField field, long newValue) { |
| if (field instanceof ChronoField) { |
| ChronoField f = (ChronoField) field; |
| if (getLong(f) == newValue) { |
| return this; |
| } |
| switch (f) { |
| case YEAR_OF_ERA: |
| case YEAR: |
| case ERA: { |
| int nvalue = getChronology().range(f).checkValidIntValue(newValue, f); |
| switch (f) { |
| case YEAR_OF_ERA: |
| return this.withYear(nvalue); |
| case YEAR: |
| return with(isoDate.withYear(nvalue)); |
| case ERA: { |
| return this.withYear(JapaneseEra.of(nvalue), yearOfEra); |
| } |
| } |
| } |
| } |
| // YEAR, PROLEPTIC_MONTH and others are same as ISO |
| // TODO: review other fields, such as WEEK_OF_YEAR |
| return with(isoDate.with(field, newValue)); |
| } |
| return ChronoLocalDate.super.with(field, newValue); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public JapaneseDate with(TemporalAdjuster adjuster) { |
| return super.with(adjuster); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public JapaneseDate plus(TemporalAmount amount) { |
| return super.plus(amount); |
| } |
| |
| /** |
| * {@inheritDoc} |
| * @throws DateTimeException {@inheritDoc} |
| * @throws ArithmeticException {@inheritDoc} |
| */ |
| @Override |
| public JapaneseDate minus(TemporalAmount amount) { |
| return super.minus(amount); |
| } |
| //----------------------------------------------------------------------- |
| /** |
| * Returns a copy of this date with the year altered. |
| * <p> |
| * This method changes the year of the date. |
| * If the month-day is invalid for the year, then the previous valid day |
| * will be selected instead. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param era the era to set in the result, not null |
| * @param yearOfEra the year-of-era to set in the returned date |
| * @return a {@code JapaneseDate} based on this date with the requested year, never null |
| * @throws DateTimeException if {@code year} is invalid |
| */ |
| private JapaneseDate withYear(JapaneseEra era, int yearOfEra) { |
| int year = JapaneseChronology.INSTANCE.prolepticYear(era, yearOfEra); |
| return with(isoDate.withYear(year)); |
| } |
| |
| /** |
| * Returns a copy of this date with the year-of-era altered. |
| * <p> |
| * This method changes the year-of-era of the date. |
| * If the month-day is invalid for the year, then the previous valid day |
| * will be selected instead. |
| * <p> |
| * This instance is immutable and unaffected by this method call. |
| * |
| * @param year the year to set in the returned date |
| * @return a {@code JapaneseDate} based on this date with the requested year-of-era, never null |
| * @throws DateTimeException if {@code year} is invalid |
| */ |
| private JapaneseDate withYear(int year) { |
| return withYear(getEra(), year); |
| } |
| |
| //----------------------------------------------------------------------- |
| @Override |
| JapaneseDate plusYears(long years) { |
| return with(isoDate.plusYears(years)); |
| } |
| |
| @Override |
| JapaneseDate plusMonths(long months) { |
| return with(isoDate.plusMonths(months)); |
| } |
| |
| @Override |
| JapaneseDate plusWeeks(long weeksToAdd) { |
| return with(isoDate.plusWeeks(weeksToAdd)); |
| } |
| |
| @Override |
| JapaneseDate plusDays(long days) { |
| return with(isoDate.plusDays(days)); |
| } |
| |
| @Override |
| public JapaneseDate plus(long amountToAdd, TemporalUnit unit) { |
| return super.plus(amountToAdd, unit); |
| } |
| |
| @Override |
| public JapaneseDate minus(long amountToAdd, TemporalUnit unit) { |
| return super.minus(amountToAdd, unit); |
| } |
| |
| @Override |
| JapaneseDate minusYears(long yearsToSubtract) { |
| return super.minusYears(yearsToSubtract); |
| } |
| |
| @Override |
| JapaneseDate minusMonths(long monthsToSubtract) { |
| return super.minusMonths(monthsToSubtract); |
| } |
| |
| @Override |
| JapaneseDate minusWeeks(long weeksToSubtract) { |
| return super.minusWeeks(weeksToSubtract); |
| } |
| |
| @Override |
| JapaneseDate minusDays(long daysToSubtract) { |
| return super.minusDays(daysToSubtract); |
| } |
| |
| private JapaneseDate with(LocalDate newDate) { |
| return (newDate.equals(isoDate) ? this : new JapaneseDate(newDate)); |
| } |
| |
| @Override // for javadoc and covariant return type |
| public final ChronoLocalDateTime<JapaneseDate> atTime(LocalTime localTime) { |
| return super.atTime(localTime); |
| } |
| |
| @Override |
| public Period periodUntil(ChronoLocalDate<?> endDate) { |
| return isoDate.periodUntil(endDate); |
| } |
| |
| @Override // override for performance |
| public long toEpochDay() { |
| return isoDate.toEpochDay(); |
| } |
| |
| //------------------------------------------------------------------------- |
| @Override // override for performance |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (obj instanceof JapaneseDate) { |
| JapaneseDate otherDate = (JapaneseDate) obj; |
| return this.isoDate.equals(otherDate.isoDate); |
| } |
| return false; |
| } |
| |
| @Override // override for performance |
| public int hashCode() { |
| return getChronology().getId().hashCode() ^ isoDate.hashCode(); |
| } |
| |
| @Override |
| public String toString() { |
| if (era == JapaneseEra.SEIREKI) { |
| return getChronology().getId() + " " + isoDate.toString(); |
| } |
| return super.toString(); |
| } |
| |
| //----------------------------------------------------------------------- |
| private Object writeReplace() { |
| return new Ser(Ser.JAPANESE_DATE_TYPE, this); |
| } |
| |
| void writeExternal(DataOutput out) throws IOException { |
| // JapaneseChronology is implicit in the JAPANESE_DATE_TYPE |
| out.writeInt(get(YEAR)); |
| out.writeByte(get(MONTH_OF_YEAR)); |
| out.writeByte(get(DAY_OF_MONTH)); |
| } |
| |
| static JapaneseDate readExternal(DataInput in) throws IOException { |
| int year = in.readInt(); |
| int month = in.readByte(); |
| int dayOfMonth = in.readByte(); |
| return JapaneseChronology.INSTANCE.date(year, month, dayOfMonth); |
| } |
| |
| } |