--- a/jdk/src/share/classes/java/time/temporal/MonthDay.java Tue Feb 12 16:02:14 2013 +0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,755 +0,0 @@
-/*
- * 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.
- */
-
-/*
- * This file is available under and governed by the GNU General Public
- * License version 2 only, as published by the Free Software Foundation.
- * However, the following notice accompanied the original version of this
- * file:
- *
- * Copyright (c) 2007-2012, 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.temporal;
-
-import static java.time.temporal.ChronoField.DAY_OF_MONTH;
-import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
-
-import java.io.DataInput;
-import java.io.DataOutput;
-import java.io.IOException;
-import java.io.InvalidObjectException;
-import java.io.ObjectStreamException;
-import java.io.Serializable;
-import java.time.Clock;
-import java.time.DateTimeException;
-import java.time.LocalDate;
-import java.time.Month;
-import java.time.ZoneId;
-import java.time.format.DateTimeFormatter;
-import java.time.format.DateTimeFormatterBuilder;
-import java.time.format.DateTimeParseException;
-import java.util.Objects;
-
-/**
- * A month-day in the ISO-8601 calendar system, such as {@code --12-03}.
- * <p>
- * {@code MonthDay} is an immutable date-time object that represents the combination
- * of a year and month. Any field that can be derived from a month and day, such as
- * quarter-of-year, can be obtained.
- * <p>
- * This class does not store or represent a year, time or time-zone.
- * For example, the value "December 3rd" can be stored in a {@code MonthDay}.
- * <p>
- * Since a {@code MonthDay} does not possess a year, the leap day of
- * February 29th is considered valid.
- * <p>
- * This class implements {@link TemporalAccessor} rather than {@link Temporal}.
- * This is because it is not possible to define whether February 29th is valid or not
- * without external information, preventing the implementation of plus/minus.
- * Related to this, {@code MonthDay} only provides access to query and set the fields
- * {@code MONTH_OF_YEAR} and {@code DAY_OF_MONTH}.
- * <p>
- * The ISO-8601 calendar system is the modern civil calendar system used today
- * in most of the world. It is equivalent to the proleptic Gregorian calendar
- * system, in which today's rules for leap years are applied for all time.
- * For most applications written today, the ISO-8601 rules are entirely suitable.
- * However, any application that makes use of historical dates, and requires them
- * to be accurate will find the ISO-8601 approach unsuitable.
- *
- * <h3>Specification for implementors</h3>
- * This class is immutable and thread-safe.
- *
- * @since 1.8
- */
-public final class MonthDay
- implements TemporalAccessor, TemporalAdjuster, Comparable<MonthDay>, Serializable {
-
- /**
- * Serialization version.
- */
- private static final long serialVersionUID = -939150713474957432L;
- /**
- * Parser.
- */
- private static final DateTimeFormatter PARSER = new DateTimeFormatterBuilder()
- .appendLiteral("--")
- .appendValue(MONTH_OF_YEAR, 2)
- .appendLiteral('-')
- .appendValue(DAY_OF_MONTH, 2)
- .toFormatter();
-
- /**
- * The month-of-year, not null.
- */
- private final int month;
- /**
- * The day-of-month.
- */
- private final int day;
-
- //-----------------------------------------------------------------------
- /**
- * Obtains the current month-day from the system clock in the default time-zone.
- * <p>
- * This will query the {@link java.time.Clock#systemDefaultZone() system clock} in the default
- * time-zone to obtain the current month-day.
- * <p>
- * Using this method will prevent the ability to use an alternate clock for testing
- * because the clock is hard-coded.
- *
- * @return the current month-day using the system clock and default time-zone, not null
- */
- public static MonthDay now() {
- return now(Clock.systemDefaultZone());
- }
-
- /**
- * Obtains the current month-day from the system clock in the specified time-zone.
- * <p>
- * This will query the {@link Clock#system(java.time.ZoneId) system clock} to obtain the current month-day.
- * 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 month-day using the system clock, not null
- */
- public static MonthDay now(ZoneId zone) {
- return now(Clock.system(zone));
- }
-
- /**
- * Obtains the current month-day from the specified clock.
- * <p>
- * This will query the specified clock to obtain the current month-day.
- * Using this method allows the use of an alternate clock for testing.
- * The alternate clock may be introduced using {@link Clock dependency injection}.
- *
- * @param clock the clock to use, not null
- * @return the current month-day, not null
- */
- public static MonthDay now(Clock clock) {
- final LocalDate now = LocalDate.now(clock); // called once
- return MonthDay.of(now.getMonth(), now.getDayOfMonth());
- }
-
- //-----------------------------------------------------------------------
- /**
- * Obtains an instance of {@code MonthDay}.
- * <p>
- * The day-of-month must be valid for the month within a leap year.
- * Hence, for February, day 29 is valid.
- * <p>
- * For example, passing in April and day 31 will throw an exception, as
- * there can never be April 31st in any year. By contrast, passing in
- * February 29th is permitted, as that month-day can sometimes be valid.
- *
- * @param month the month-of-year to represent, not null
- * @param dayOfMonth the day-of-month to represent, from 1 to 31
- * @return the month-day, not null
- * @throws DateTimeException if the value of any field is out of range
- * @throws DateTimeException if the day-of-month is invalid for the month
- */
- public static MonthDay of(Month month, int dayOfMonth) {
- Objects.requireNonNull(month, "month");
- DAY_OF_MONTH.checkValidValue(dayOfMonth);
- if (dayOfMonth > month.maxLength()) {
- throw new DateTimeException("Illegal value for DayOfMonth field, value " + dayOfMonth +
- " is not valid for month " + month.name());
- }
- return new MonthDay(month.getValue(), dayOfMonth);
- }
-
- /**
- * Obtains an instance of {@code MonthDay}.
- * <p>
- * The day-of-month must be valid for the month within a leap year.
- * Hence, for month 2 (February), day 29 is valid.
- * <p>
- * For example, passing in month 4 (April) and day 31 will throw an exception, as
- * there can never be April 31st in any year. By contrast, passing in
- * February 29th is permitted, as that month-day can sometimes be valid.
- *
- * @param month the month-of-year to represent, from 1 (January) to 12 (December)
- * @param dayOfMonth the day-of-month to represent, from 1 to 31
- * @return the month-day, not null
- * @throws DateTimeException if the value of any field is out of range
- * @throws DateTimeException if the day-of-month is invalid for the month
- */
- public static MonthDay of(int month, int dayOfMonth) {
- return of(Month.of(month), dayOfMonth);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Obtains an instance of {@code MonthDay} from a temporal object.
- * <p>
- * A {@code TemporalAccessor} represents some form of date and time information.
- * This factory converts the arbitrary temporal object to an instance of {@code MonthDay}.
- * <p>
- * The conversion extracts the {@link ChronoField#MONTH_OF_YEAR MONTH_OF_YEAR} and
- * {@link ChronoField#DAY_OF_MONTH DAY_OF_MONTH} fields.
- * The extraction is only permitted if the date-time has an ISO chronology.
- * <p>
- * This method matches the signature of the functional interface {@link TemporalQuery}
- * allowing it to be used in queries via method reference, {@code MonthDay::from}.
- *
- * @param temporal the temporal object to convert, not null
- * @return the month-day, not null
- * @throws DateTimeException if unable to convert to a {@code MonthDay}
- */
- public static MonthDay from(TemporalAccessor temporal) {
- if (temporal instanceof MonthDay) {
- return (MonthDay) temporal;
- }
- try {
- if (ISOChrono.INSTANCE.equals(Chrono.from(temporal)) == false) {
- temporal = LocalDate.from(temporal);
- }
- return of(temporal.get(MONTH_OF_YEAR), temporal.get(DAY_OF_MONTH));
- } catch (DateTimeException ex) {
- throw new DateTimeException("Unable to obtain MonthDay from TemporalAccessor: " + temporal.getClass(), ex);
- }
- }
-
- //-----------------------------------------------------------------------
- /**
- * Obtains an instance of {@code MonthDay} from a text string such as {@code --12-03}.
- * <p>
- * The string must represent a valid month-day.
- * The format is {@code --MM-dd}.
- *
- * @param text the text to parse such as "--12-03", not null
- * @return the parsed month-day, not null
- * @throws DateTimeParseException if the text cannot be parsed
- */
- public static MonthDay parse(CharSequence text) {
- return parse(text, PARSER);
- }
-
- /**
- * Obtains an instance of {@code MonthDay} from a text string using a specific formatter.
- * <p>
- * The text is parsed using the formatter, returning a month-day.
- *
- * @param text the text to parse, not null
- * @param formatter the formatter to use, not null
- * @return the parsed month-day, not null
- * @throws DateTimeParseException if the text cannot be parsed
- */
- public static MonthDay parse(CharSequence text, DateTimeFormatter formatter) {
- Objects.requireNonNull(formatter, "formatter");
- return formatter.parse(text, MonthDay::from);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Constructor, previously validated.
- *
- * @param month the month-of-year to represent, validated from 1 to 12
- * @param dayOfMonth the day-of-month to represent, validated from 1 to 29-31
- */
- private MonthDay(int month, int dayOfMonth) {
- this.month = month;
- this.day = dayOfMonth;
- }
-
- //-----------------------------------------------------------------------
- /**
- * Checks if the specified field is supported.
- * <p>
- * This checks if this month-day can be queried for the specified field.
- * If false, then calling the {@link #range(TemporalField) range} and
- * {@link #get(TemporalField) get} methods will throw an exception.
- * <p>
- * If the field is a {@link ChronoField} then the query is implemented here.
- * The {@link #isSupported(TemporalField) supported fields} will return valid
- * values based on this date-time.
- * The supported fields are:
- * <ul>
- * <li>{@code MONTH_OF_YEAR}
- * <li>{@code YEAR}
- * </ul>
- * All other {@code ChronoField} instances will return false.
- * <p>
- * If the field is not a {@code ChronoField}, then the result of this method
- * is obtained by invoking {@code TemporalField.doIsSupported(TemporalAccessor)}
- * passing {@code this} as the argument.
- * Whether the field is supported is determined by the field.
- *
- * @param field the field to check, null returns false
- * @return true if the field is supported on this month-day, false if not
- */
- @Override
- public boolean isSupported(TemporalField field) {
- if (field instanceof ChronoField) {
- return field == MONTH_OF_YEAR || field == DAY_OF_MONTH;
- }
- return field != null && field.doIsSupported(this);
- }
-
- /**
- * Gets the range of valid values for the specified field.
- * <p>
- * The range object expresses the minimum and maximum valid values for a field.
- * This month-day is used to enhance the accuracy of the returned range.
- * If it is not possible to return the range, because the field is not supported
- * or for some other reason, an exception is thrown.
- * <p>
- * If the field is a {@link ChronoField} then the query is implemented here.
- * The {@link #isSupported(TemporalField) supported fields} will return
- * appropriate range instances.
- * All other {@code ChronoField} instances will throw a {@code DateTimeException}.
- * <p>
- * If the field is not a {@code ChronoField}, then the result of this method
- * is obtained by invoking {@code TemporalField.doRange(TemporalAccessor)}
- * passing {@code this} as the argument.
- * Whether the range can be obtained is determined by the field.
- *
- * @param field the field to query the range for, not null
- * @return the range of valid values for the field, not null
- * @throws DateTimeException if the range for the field cannot be obtained
- */
- @Override
- public ValueRange range(TemporalField field) {
- if (field == MONTH_OF_YEAR) {
- return field.range();
- } else if (field == DAY_OF_MONTH) {
- return ValueRange.of(1, getMonth().minLength(), getMonth().maxLength());
- }
- return TemporalAccessor.super.range(field);
- }
-
- /**
- * Gets the value of the specified field from this month-day as an {@code int}.
- * <p>
- * This queries this month-day for the value for the specified field.
- * The returned value will always be within the valid range of values for the field.
- * If it is not possible to return the value, because the field is not supported
- * or for some other reason, an exception is thrown.
- * <p>
- * If the field is a {@link ChronoField} then the query is implemented here.
- * The {@link #isSupported(TemporalField) supported fields} will return valid
- * values based on this month-day.
- * All other {@code ChronoField} instances will throw a {@code DateTimeException}.
- * <p>
- * If the field is not a {@code ChronoField}, then the result of this method
- * is obtained by invoking {@code TemporalField.doGet(TemporalAccessor)}
- * passing {@code this} as the argument. Whether the value can be obtained,
- * and what the value represents, is determined by the field.
- *
- * @param field the field to get, not null
- * @return the value for the field
- * @throws DateTimeException if a value for the field cannot be obtained
- * @throws ArithmeticException if numeric overflow occurs
- */
- @Override // override for Javadoc
- public int get(TemporalField field) {
- return range(field).checkValidIntValue(getLong(field), field);
- }
-
- /**
- * Gets the value of the specified field from this month-day as a {@code long}.
- * <p>
- * This queries this month-day for the value for the specified field.
- * If it is not possible to return the value, because the field is not supported
- * or for some other reason, an exception is thrown.
- * <p>
- * If the field is a {@link ChronoField} then the query is implemented here.
- * The {@link #isSupported(TemporalField) supported fields} will return valid
- * values based on this month-day.
- * All other {@code ChronoField} instances will throw a {@code DateTimeException}.
- * <p>
- * If the field is not a {@code ChronoField}, then the result of this method
- * is obtained by invoking {@code TemporalField.doGet(TemporalAccessor)}
- * passing {@code this} as the argument. Whether the value can be obtained,
- * and what the value represents, is determined by the field.
- *
- * @param field the field to get, not null
- * @return the value for the field
- * @throws DateTimeException if a value for the field cannot be obtained
- * @throws ArithmeticException if numeric overflow occurs
- */
- @Override
- public long getLong(TemporalField field) {
- if (field instanceof ChronoField) {
- switch ((ChronoField) field) {
- // alignedDOW and alignedWOM not supported because they cannot be set in with()
- case DAY_OF_MONTH: return day;
- case MONTH_OF_YEAR: return month;
- }
- throw new DateTimeException("Unsupported field: " + field.getName());
- }
- return field.doGet(this);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Gets the month-of-year field using the {@code Month} enum.
- * <p>
- * This method returns the enum {@link Month} for the month.
- * This avoids confusion as to what {@code int} values mean.
- * If you need access to the primitive {@code int} value then the enum
- * provides the {@link Month#getValue() int value}.
- *
- * @return the month-of-year, not null
- */
- public Month getMonth() {
- return Month.of(month);
- }
-
- /**
- * Gets the day-of-month field.
- * <p>
- * This method returns the primitive {@code int} value for the day-of-month.
- *
- * @return the day-of-month, from 1 to 31
- */
- public int getDayOfMonth() {
- return day;
- }
-
- //-----------------------------------------------------------------------
- /**
- * Checks if the year is valid for this month-day.
- * <p>
- * This method checks whether this month and day and the input year form
- * a valid date. This can only return false for February 29th.
- *
- * @param year the year to validate, an out of range value returns false
- * @return true if the year is valid for this month-day
- * @see Year#isValidMonthDay(MonthDay)
- */
- public boolean isValidYear(int year) {
- return (day == 29 && month == 2 && Year.isLeap(year) == false) == false;
- }
-
- //-----------------------------------------------------------------------
- /**
- * Returns a copy of this {@code MonthDay} with the month-of-year altered.
- * <p>
- * This returns a month-day with the specified month.
- * If the day-of-month is invalid for the specified month, the day will
- * be adjusted to the last valid day-of-month.
- * <p>
- * This instance is immutable and unaffected by this method call.
- *
- * @param month the month-of-year to set in the returned month-day, from 1 (January) to 12 (December)
- * @return a {@code MonthDay} based on this month-day with the requested month, not null
- * @throws DateTimeException if the month-of-year value is invalid
- */
- public MonthDay withMonth(int month) {
- return with(Month.of(month));
- }
-
- /**
- * Returns a copy of this {@code MonthDay} with the month-of-year altered.
- * <p>
- * This returns a month-day with the specified month.
- * If the day-of-month is invalid for the specified month, the day will
- * be adjusted to the last valid day-of-month.
- * <p>
- * This instance is immutable and unaffected by this method call.
- *
- * @param month the month-of-year to set in the returned month-day, not null
- * @return a {@code MonthDay} based on this month-day with the requested month, not null
- */
- public MonthDay with(Month month) {
- Objects.requireNonNull(month, "month");
- if (month.getValue() == this.month) {
- return this;
- }
- int day = Math.min(this.day, month.maxLength());
- return new MonthDay(month.getValue(), day);
- }
-
- /**
- * Returns a copy of this {@code MonthDay} with the day-of-month altered.
- * <p>
- * This returns a month-day with the specified day-of-month.
- * If the day-of-month is invalid for the month, an exception is thrown.
- * <p>
- * This instance is immutable and unaffected by this method call.
- *
- * @param dayOfMonth the day-of-month to set in the return month-day, from 1 to 31
- * @return a {@code MonthDay} based on this month-day with the requested day, not null
- * @throws DateTimeException if the day-of-month value is invalid
- * @throws DateTimeException if the day-of-month is invalid for the month
- */
- public MonthDay withDayOfMonth(int dayOfMonth) {
- if (dayOfMonth == this.day) {
- return this;
- }
- return of(month, dayOfMonth);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Queries this month-day using the specified query.
- * <p>
- * This queries this month-day using the specified query strategy object.
- * The {@code TemporalQuery} object defines the logic to be used to
- * obtain the result. Read the documentation of the query to understand
- * what the result of this method will be.
- * <p>
- * The result of this method is obtained by invoking the
- * {@link TemporalQuery#queryFrom(TemporalAccessor)} method on the
- * specified query passing {@code this} as the argument.
- *
- * @param <R> the type of the result
- * @param query the query to invoke, not null
- * @return the query result, null may be returned (defined by the query)
- * @throws DateTimeException if unable to query (defined by the query)
- * @throws ArithmeticException if numeric overflow occurs (defined by the query)
- */
- @SuppressWarnings("unchecked")
- @Override
- public <R> R query(TemporalQuery<R> query) {
- if (query == Queries.chrono()) {
- return (R) ISOChrono.INSTANCE;
- }
- return TemporalAccessor.super.query(query);
- }
-
- /**
- * Adjusts the specified temporal object to have this month-day.
- * <p>
- * This returns a temporal object of the same observable type as the input
- * with the month and day-of-month changed to be the same as this.
- * <p>
- * The adjustment is equivalent to using {@link Temporal#with(TemporalField, long)}
- * twice, passing {@link ChronoField#MONTH_OF_YEAR} and
- * {@link ChronoField#DAY_OF_MONTH} as the fields.
- * If the specified temporal object does not use the ISO calendar system then
- * a {@code DateTimeException} is thrown.
- * <p>
- * In most cases, it is clearer to reverse the calling pattern by using
- * {@link Temporal#with(TemporalAdjuster)}:
- * <pre>
- * // these two lines are equivalent, but the second approach is recommended
- * temporal = thisMonthDay.adjustInto(temporal);
- * temporal = temporal.with(thisMonthDay);
- * </pre>
- * <p>
- * This instance is immutable and unaffected by this method call.
- *
- * @param temporal the target object to be adjusted, not null
- * @return the adjusted object, not null
- * @throws DateTimeException if unable to make the adjustment
- * @throws ArithmeticException if numeric overflow occurs
- */
- @Override
- public Temporal adjustInto(Temporal temporal) {
- if (Chrono.from(temporal).equals(ISOChrono.INSTANCE) == false) {
- throw new DateTimeException("Adjustment only supported on ISO date-time");
- }
- temporal = temporal.with(MONTH_OF_YEAR, month);
- return temporal.with(DAY_OF_MONTH, Math.min(temporal.range(DAY_OF_MONTH).getMaximum(), day));
- }
-
- //-----------------------------------------------------------------------
- /**
- * Returns a date formed from this month-day at the specified year.
- * <p>
- * This combines this month-day and the specified year to form a {@code LocalDate}.
- * A month-day of February 29th will be adjusted to February 28th in the resulting
- * date if the year is not a leap year.
- * <p>
- * This instance is immutable and unaffected by this method call.
- *
- * @param year the year to use, from MIN_YEAR to MAX_YEAR
- * @return the local date formed from this month-day and the specified year, not null
- * @see Year#atMonthDay(MonthDay)
- */
- public LocalDate atYear(int year) {
- return LocalDate.of(year, month, isValidYear(year) ? day : 28);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Compares this month-day to another month-day.
- * <p>
- * The comparison is based first on value of the month, then on the value of the day.
- * It is "consistent with equals", as defined by {@link Comparable}.
- *
- * @param other the other month-day to compare to, not null
- * @return the comparator value, negative if less, positive if greater
- */
- public int compareTo(MonthDay other) {
- int cmp = (month - other.month);
- if (cmp == 0) {
- cmp = (day - other.day);
- }
- return cmp;
- }
-
- /**
- * Is this month-day after the specified month-day.
- *
- * @param other the other month-day to compare to, not null
- * @return true if this is after the specified month-day
- */
- public boolean isAfter(MonthDay other) {
- return compareTo(other) > 0;
- }
-
- /**
- * Is this month-day before the specified month-day.
- *
- * @param other the other month-day to compare to, not null
- * @return true if this point is before the specified month-day
- */
- public boolean isBefore(MonthDay other) {
- return compareTo(other) < 0;
- }
-
- //-----------------------------------------------------------------------
- /**
- * Checks if this month-day is equal to another month-day.
- * <p>
- * The comparison is based on the time-line position of the month-day within a year.
- *
- * @param obj the object to check, null returns false
- * @return true if this is equal to the other month-day
- */
- @Override
- public boolean equals(Object obj) {
- if (this == obj) {
- return true;
- }
- if (obj instanceof MonthDay) {
- MonthDay other = (MonthDay) obj;
- return month == other.month && day == other.day;
- }
- return false;
- }
-
- /**
- * A hash code for this month-day.
- *
- * @return a suitable hash code
- */
- @Override
- public int hashCode() {
- return (month << 6) + day;
- }
-
- //-----------------------------------------------------------------------
- /**
- * Outputs this month-day as a {@code String}, such as {@code --12-03}.
- * <p>
- * The output will be in the format {@code --MM-dd}:
- *
- * @return a string representation of this month-day, not null
- */
- @Override
- public String toString() {
- return new StringBuilder(10).append("--")
- .append(month < 10 ? "0" : "").append(month)
- .append(day < 10 ? "-0" : "-").append(day)
- .toString();
- }
-
- /**
- * Outputs this month-day as a {@code String} using the formatter.
- * <p>
- * This month-day will be passed to the formatter
- * {@link DateTimeFormatter#print(TemporalAccessor) print method}.
- *
- * @param formatter the formatter to use, not null
- * @return the formatted month-day string, not null
- * @throws DateTimeException if an error occurs during printing
- */
- public String toString(DateTimeFormatter formatter) {
- Objects.requireNonNull(formatter, "formatter");
- return formatter.print(this);
- }
-
- //-----------------------------------------------------------------------
- /**
- * Writes the object using a
- * <a href="../../../serialized-form.html#java.time.temporal.Ser">dedicated serialized form</a>.
- * <pre>
- * out.writeByte(6); // identifies this as a Year
- * out.writeByte(month);
- * out.writeByte(day);
- * </pre>
- *
- * @return the instance of {@code Ser}, not null
- */
- private Object writeReplace() {
- return new Ser(Ser.MONTH_DAY_TYPE, this);
- }
-
- /**
- * Defend against malicious streams.
- * @return never
- * @throws InvalidObjectException always
- */
- private Object readResolve() throws ObjectStreamException {
- throw new InvalidObjectException("Deserialization via serialization delegate");
- }
-
- void writeExternal(DataOutput out) throws IOException {
- out.writeByte(month);
- out.writeByte(day);
- }
-
- static MonthDay readExternal(DataInput in) throws IOException {
- byte month = in.readByte();
- byte day = in.readByte();
- return MonthDay.of(month, day);
- }
-
-}