Back to index...

	/*
	* Copyright (c) 2012, 2015, 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;

	import static java.time.LocalTime.HOURS_PER_DAY;
	import static java.time.LocalTime.MICROS_PER_DAY;
	import static java.time.LocalTime.MILLIS_PER_DAY;
	import static java.time.LocalTime.MINUTES_PER_DAY;
	import static java.time.LocalTime.NANOS_PER_DAY;
	import static java.time.LocalTime.NANOS_PER_HOUR;
	import static java.time.LocalTime.NANOS_PER_MINUTE;
	import static java.time.LocalTime.NANOS_PER_SECOND;
	import static java.time.LocalTime.SECONDS_PER_DAY;
	import static java.time.temporal.ChronoField.NANO_OF_SECOND;

	import java.io.DataInput;
	import java.io.DataOutput;
	import java.io.IOException;
	import java.io.InvalidObjectException;
	import java.io.ObjectInputStream;
	import java.io.Serializable;
	import java.time.chrono.ChronoLocalDateTime;
	import java.time.format.DateTimeFormatter;
	import java.time.format.DateTimeParseException;
	import java.time.temporal.ChronoField;
	import java.time.temporal.ChronoUnit;
	import java.time.temporal.Temporal;
	import java.time.temporal.TemporalAccessor;
	import java.time.temporal.TemporalAdjuster;
	import java.time.temporal.TemporalAmount;
	import java.time.temporal.TemporalField;
	import java.time.temporal.TemporalQueries;
	import java.time.temporal.TemporalQuery;
	import java.time.temporal.TemporalUnit;
	import java.time.temporal.UnsupportedTemporalTypeException;
	import java.time.temporal.ValueRange;
	import java.time.zone.ZoneRules;
	import java.util.Objects;

	/**
	* A date-time without a time-zone in the ISO-8601 calendar system,
	* such as {@code 2007-12-03T10:15:30}.
	* <p>
	* {@code LocalDateTime} is an immutable date-time object that represents a date-time,
	* often viewed as year-month-day-hour-minute-second. Other date and time fields,
	* such as day-of-year, day-of-week and week-of-year, can also be accessed.
	* Time is represented to nanosecond precision.
	* For example, the value "2nd October 2007 at 13:45.30.123456789" can be
	* stored in a {@code LocalDateTime}.
	* <p>
	* This class does not store or represent a time-zone.
	* Instead, it is a description of the date, as used for birthdays, combined with
	* the local time as seen on a wall clock.
	* It cannot represent an instant on the time-line without additional information
	* such as an offset or time-zone.
	* <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.
	*
	* <p>
	* This is a <a href="{@docRoot}/java/lang/doc-files/ValueBased.html">value-based</a>
	* class; use of identity-sensitive operations (including reference equality
	* ({@code ==}), identity hash code, or synchronization) on instances of
	* {@code LocalDateTime} may have unpredictable results and should be avoided.
	* The {@code equals} method should be used for comparisons.
	*
	* @implSpec
	* This class is immutable and thread-safe.
	*
	* @since 1.8
	*/
	public final class LocalDateTime
	implements Temporal, TemporalAdjuster, ChronoLocalDateTime<LocalDate>, Serializable {

	/**
	* The minimum supported {@code LocalDateTime}, '-999999999-01-01T00:00:00'.
	* This is the local date-time of midnight at the start of the minimum date.
	* This combines {@link LocalDate#MIN} and {@link LocalTime#MIN}.
	* This could be used by an application as a "far past" date-time.
	*/
	public static final LocalDateTime MIN = LocalDateTime.of(LocalDate.MIN, LocalTime.MIN);
	/**
	* The maximum supported {@code LocalDateTime}, '+999999999-12-31T23:59:59.999999999'.
	* This is the local date-time just before midnight at the end of the maximum date.
	* This combines {@link LocalDate#MAX} and {@link LocalTime#MAX}.
	* This could be used by an application as a "far future" date-time.
	*/
	public static final LocalDateTime MAX = LocalDateTime.of(LocalDate.MAX, LocalTime.MAX);

	/**
	* Serialization version.
	*/
	private static final long serialVersionUID = 6207766400415563566L;

	/**
	* The date part.
	*/
	private final LocalDate date;
	/**
	* The time part.
	*/
	private final LocalTime time;

	//-----------------------------------------------------------------------
	/**
	* Obtains the current date-time 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-time.
	* <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-time using the system clock and default time-zone, not null
	*/
	public static LocalDateTime now() {
	return now(Clock.systemDefaultZone());
	}

	/**
	* Obtains the current date-time 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-time.
	* 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-time using the system clock, not null
	*/
	public static LocalDateTime now(ZoneId zone) {
	return now(Clock.system(zone));
	}

	/**
	* Obtains the current date-time from the specified clock.
	* <p>
	* This will query the specified clock to obtain the current date-time.
	* 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 date-time, not null
	*/
	public static LocalDateTime now(Clock clock) {
	Objects.requireNonNull(clock, "clock");
	final Instant now = clock.instant(); // called once
	ZoneOffset offset = clock.getZone().getRules().getOffset(now);
	return ofEpochSecond(now.getEpochSecond(), now.getNano(), offset);
	}

	//-----------------------------------------------------------------------
	/**
	* Obtains an instance of {@code LocalDateTime} from year, month,
	* day, hour and minute, setting the second and nanosecond to zero.
	* <p>
	* This returns a {@code LocalDateTime} with the specified year, month,
	* day-of-month, hour and minute.
	* The day must be valid for the year and month, otherwise an exception will be thrown.
	* The second and nanosecond fields will be set to zero.
	*
	* @param year the year to represent, from MIN_YEAR to MAX_YEAR
	* @param month the month-of-year to represent, not null
	* @param dayOfMonth the day-of-month to represent, from 1 to 31
	* @param hour the hour-of-day to represent, from 0 to 23
	* @param minute the minute-of-hour to represent, from 0 to 59
	* @return the local date-time, 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 LocalDateTime of(int year, Month month, int dayOfMonth, int hour, int minute) {
	LocalDate date = LocalDate.of(year, month, dayOfMonth);
	LocalTime time = LocalTime.of(hour, minute);
	return new LocalDateTime(date, time);
	}

	/**
	* Obtains an instance of {@code LocalDateTime} from year, month,
	* day, hour, minute and second, setting the nanosecond to zero.
	* <p>
	* This returns a {@code LocalDateTime} with the specified year, month,
	* day-of-month, hour, minute and second.
	* The day must be valid for the year and month, otherwise an exception will be thrown.
	* The nanosecond field will be set to zero.
	*
	* @param year the year to represent, from MIN_YEAR to MAX_YEAR
	* @param month the month-of-year to represent, not null
	* @param dayOfMonth the day-of-month to represent, from 1 to 31
	* @param hour the hour-of-day to represent, from 0 to 23
	* @param minute the minute-of-hour to represent, from 0 to 59
	* @param second the second-of-minute to represent, from 0 to 59
	* @return the local date-time, 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 LocalDateTime of(int year, Month month, int dayOfMonth, int hour, int minute, int second) {
	LocalDate date = LocalDate.of(year, month, dayOfMonth);
	LocalTime time = LocalTime.of(hour, minute, second);
	return new LocalDateTime(date, time);
	}

	/**
	* Obtains an instance of {@code LocalDateTime} from year, month,
	* day, hour, minute, second and nanosecond.
	* <p>
	* This returns a {@code LocalDateTime} with the specified year, month,
	* day-of-month, hour, minute, second and nanosecond.
	* The day must be valid for the year and month, otherwise an exception will be thrown.
	*
	* @param year the year to represent, from MIN_YEAR to MAX_YEAR
	* @param month the month-of-year to represent, not null
	* @param dayOfMonth the day-of-month to represent, from 1 to 31
	* @param hour the hour-of-day to represent, from 0 to 23
	* @param minute the minute-of-hour to represent, from 0 to 59
	* @param second the second-of-minute to represent, from 0 to 59
	* @param nanoOfSecond the nano-of-second to represent, from 0 to 999,999,999
	* @return the local date-time, 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 LocalDateTime of(int year, Month month, int dayOfMonth, int hour, int minute, int second, int nanoOfSecond) {
	LocalDate date = LocalDate.of(year, month, dayOfMonth);
	LocalTime time = LocalTime.of(hour, minute, second, nanoOfSecond);
	return new LocalDateTime(date, time);
	}

	//-----------------------------------------------------------------------
	/**
	* Obtains an instance of {@code LocalDateTime} from year, month,
	* day, hour and minute, setting the second and nanosecond to zero.
	* <p>
	* This returns a {@code LocalDateTime} with the specified year, month,
	* day-of-month, hour and minute.
	* The day must be valid for the year and month, otherwise an exception will be thrown.
	* The second and nanosecond fields will be set to zero.
	*
	* @param year the year to represent, from MIN_YEAR to MAX_YEAR
	* @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
	* @param hour the hour-of-day to represent, from 0 to 23
	* @param minute the minute-of-hour to represent, from 0 to 59
	* @return the local date-time, 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 LocalDateTime of(int year, int month, int dayOfMonth, int hour, int minute) {
	LocalDate date = LocalDate.of(year, month, dayOfMonth);
	LocalTime time = LocalTime.of(hour, minute);
	return new LocalDateTime(date, time);
	}

	/**
	* Obtains an instance of {@code LocalDateTime} from year, month,
	* day, hour, minute and second, setting the nanosecond to zero.
	* <p>
	* This returns a {@code LocalDateTime} with the specified year, month,
	* day-of-month, hour, minute and second.
	* The day must be valid for the year and month, otherwise an exception will be thrown.
	* The nanosecond field will be set to zero.
	*
	* @param year the year to represent, from MIN_YEAR to MAX_YEAR
	* @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
	* @param hour the hour-of-day to represent, from 0 to 23
	* @param minute the minute-of-hour to represent, from 0 to 59
	* @param second the second-of-minute to represent, from 0 to 59
	* @return the local date-time, 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 LocalDateTime of(int year, int month, int dayOfMonth, int hour, int minute, int second) {
	LocalDate date = LocalDate.of(year, month, dayOfMonth);
	LocalTime time = LocalTime.of(hour, minute, second);
	return new LocalDateTime(date, time);
	}

	/**
	* Obtains an instance of {@code LocalDateTime} from year, month,
	* day, hour, minute, second and nanosecond.
	* <p>
	* This returns a {@code LocalDateTime} with the specified year, month,
	* day-of-month, hour, minute, second and nanosecond.
	* The day must be valid for the year and month, otherwise an exception will be thrown.
	*
	* @param year the year to represent, from MIN_YEAR to MAX_YEAR
	* @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
	* @param hour the hour-of-day to represent, from 0 to 23
	* @param minute the minute-of-hour to represent, from 0 to 59
	* @param second the second-of-minute to represent, from 0 to 59
	* @param nanoOfSecond the nano-of-second to represent, from 0 to 999,999,999
	* @return the local date-time, 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 LocalDateTime of(int year, int month, int dayOfMonth, int hour, int minute, int second, int nanoOfSecond) {
	LocalDate date = LocalDate.of(year, month, dayOfMonth);
	LocalTime time = LocalTime.of(hour, minute, second, nanoOfSecond);
	return new LocalDateTime(date, time);
	}

	/**
	* Obtains an instance of {@code LocalDateTime} from a date and time.
	*
	* @param date the local date, not null
	* @param time the local time, not null
	* @return the local date-time, not null
	*/
	public static LocalDateTime of(LocalDate date, LocalTime time) {
	Objects.requireNonNull(date, "date");
	Objects.requireNonNull(time, "time");
	return new LocalDateTime(date, time);
	}

	//-------------------------------------------------------------------------
	/**
	* Obtains an instance of {@code LocalDateTime} from an {@code Instant} and zone ID.
	* <p>
	* This creates a local date-time based on the specified instant.
	* First, the offset from UTC/Greenwich is obtained using the zone ID and instant,
	* which is simple as there is only one valid offset for each instant.
	* Then, the instant and offset are used to calculate the local date-time.
	*
	* @param instant the instant to create the date-time from, not null
	* @param zone the time-zone, which may be an offset, not null
	* @return the local date-time, not null
	* @throws DateTimeException if the result exceeds the supported range
	*/
	public static LocalDateTime ofInstant(Instant instant, ZoneId zone) {
	Objects.requireNonNull(instant, "instant");
	Objects.requireNonNull(zone, "zone");
	ZoneRules rules = zone.getRules();
	ZoneOffset offset = rules.getOffset(instant);
	return ofEpochSecond(instant.getEpochSecond(), instant.getNano(), offset);
	}

	/**
	* Obtains an instance of {@code LocalDateTime} using seconds from the
	* epoch of 1970-01-01T00:00:00Z.
	* <p>
	* This allows the {@link ChronoField#INSTANT_SECONDS epoch-second} field
	* to be converted to a local date-time. This is primarily intended for
	* low-level conversions rather than general application usage.
	*
	* @param epochSecond the number of seconds from the epoch of 1970-01-01T00:00:00Z
	* @param nanoOfSecond the nanosecond within the second, from 0 to 999,999,999
	* @param offset the zone offset, not null
	* @return the local date-time, not null
	* @throws DateTimeException if the result exceeds the supported range,
	* or if the nano-of-second is invalid
	*/
	public static LocalDateTime ofEpochSecond(long epochSecond, int nanoOfSecond, ZoneOffset offset) {
	Objects.requireNonNull(offset, "offset");
	NANO_OF_SECOND.checkValidValue(nanoOfSecond);
	long localSecond = epochSecond + offset.getTotalSeconds(); // overflow caught later
	long localEpochDay = Math.floorDiv(localSecond, SECONDS_PER_DAY);
	int secsOfDay = (int)Math.floorMod(localSecond, SECONDS_PER_DAY);
	LocalDate date = LocalDate.ofEpochDay(localEpochDay);
	LocalTime time = LocalTime.ofNanoOfDay(secsOfDay * NANOS_PER_SECOND + nanoOfSecond);
	return new LocalDateTime(date, time);
	}

	//-----------------------------------------------------------------------
	/**
	* Obtains an instance of {@code LocalDateTime} from a temporal object.
	* <p>
	* This obtains a local date-time 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 LocalDateTime}.
	* <p>
	* The conversion extracts and combines the {@code LocalDate} and the
	* {@code LocalTime} from the temporal object.
	* Implementations are permitted to perform optimizations such as accessing
	* those fields that are equivalent to the relevant objects.
	* <p>
	* This method matches the signature of the functional interface {@link TemporalQuery}
	* allowing it to be used as a query via method reference, {@code LocalDateTime::from}.
	*
	* @param temporal the temporal object to convert, not null
	* @return the local date-time, not null
	* @throws DateTimeException if unable to convert to a {@code LocalDateTime}
	*/
	public static LocalDateTime from(TemporalAccessor temporal) {
	if (temporal instanceof LocalDateTime) {
	return (LocalDateTime) temporal;
	} else if (temporal instanceof ZonedDateTime) {
	return ((ZonedDateTime) temporal).toLocalDateTime();
	} else if (temporal instanceof OffsetDateTime) {
	return ((OffsetDateTime) temporal).toLocalDateTime();
	}
	try {
	LocalDate date = LocalDate.from(temporal);
	LocalTime time = LocalTime.from(temporal);
	return new LocalDateTime(date, time);
	} catch (DateTimeException ex) {
	throw new DateTimeException("Unable to obtain LocalDateTime from TemporalAccessor: " +
	temporal + " of type " + temporal.getClass().getName(), ex);
	}
	}

	//-----------------------------------------------------------------------
	/**
	* Obtains an instance of {@code LocalDateTime} from a text string such as {@code 2007-12-03T10:15:30}.
	* <p>
	* The string must represent a valid date-time and is parsed using
	* {@link java.time.format.DateTimeFormatter#ISO_LOCAL_DATE_TIME}.
	*
	* @param text the text to parse such as "2007-12-03T10:15:30", not null
	* @return the parsed local date-time, not null
	* @throws DateTimeParseException if the text cannot be parsed
	*/
	public static LocalDateTime parse(CharSequence text) {
	return parse(text, DateTimeFormatter.ISO_LOCAL_DATE_TIME);
	}

	/**
	* Obtains an instance of {@code LocalDateTime} from a text string using a specific formatter.
	* <p>
	* The text is parsed using the formatter, returning a date-time.
	*
	* @param text the text to parse, not null
	* @param formatter the formatter to use, not null
	* @return the parsed local date-time, not null
	* @throws DateTimeParseException if the text cannot be parsed
	*/
	public static LocalDateTime parse(CharSequence text, DateTimeFormatter formatter) {
	Objects.requireNonNull(formatter, "formatter");
	return formatter.parse(text, LocalDateTime::from);
	}

	//-----------------------------------------------------------------------
	/**
	* Constructor.
	*
	* @param date the date part of the date-time, validated not null
	* @param time the time part of the date-time, validated not null
	*/
	private LocalDateTime(LocalDate date, LocalTime time) {
	this.date = date;
	this.time = time;
	}

	/**
	* Returns a copy of this date-time with the new date and time, checking
	* to see if a new object is in fact required.
	*
	* @param newDate the date of the new date-time, not null
	* @param newTime the time of the new date-time, not null
	* @return the date-time, not null
	*/
	private LocalDateTime with(LocalDate newDate, LocalTime newTime) {
	if (date == newDate && time == newTime) {
	return this;
	}
	return new LocalDateTime(newDate, newTime);
	}

	//-----------------------------------------------------------------------
	/**
	* Checks if the specified field is supported.
	* <p>
	* This checks if this date-time can be queried for the specified field.
	* If false, then calling the {@link #range(TemporalField) range},
	* {@link #get(TemporalField) get} and {@link #with(TemporalField, long)}
	* methods will throw an exception.
	* <p>
	* If the field is a {@link ChronoField} then the query is implemented here.
	* The supported fields are:
	* <ul>
	* <li>{@code NANO_OF_SECOND}
	* <li>{@code NANO_OF_DAY}
	* <li>{@code MICRO_OF_SECOND}
	* <li>{@code MICRO_OF_DAY}
	* <li>{@code MILLI_OF_SECOND}
	* <li>{@code MILLI_OF_DAY}
	* <li>{@code SECOND_OF_MINUTE}
	* <li>{@code SECOND_OF_DAY}
	* <li>{@code MINUTE_OF_HOUR}
	* <li>{@code MINUTE_OF_DAY}
	* <li>{@code HOUR_OF_AMPM}
	* <li>{@code CLOCK_HOUR_OF_AMPM}
	* <li>{@code HOUR_OF_DAY}
	* <li>{@code CLOCK_HOUR_OF_DAY}
	* <li>{@code AMPM_OF_DAY}
	* <li>{@code DAY_OF_WEEK}
	* <li>{@code ALIGNED_DAY_OF_WEEK_IN_MONTH}
	* <li>{@code ALIGNED_DAY_OF_WEEK_IN_YEAR}
	* <li>{@code DAY_OF_MONTH}
	* <li>{@code DAY_OF_YEAR}
	* <li>{@code EPOCH_DAY}
	* <li>{@code ALIGNED_WEEK_OF_MONTH}
	* <li>{@code ALIGNED_WEEK_OF_YEAR}
	* <li>{@code MONTH_OF_YEAR}
	* <li>{@code PROLEPTIC_MONTH}
	* <li>{@code YEAR_OF_ERA}
	* <li>{@code YEAR}
	* <li>{@code ERA}
	* </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.isSupportedBy(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 date-time, false if not
	*/
	@Override
	public boolean isSupported(TemporalField field) {
	if (field instanceof ChronoField) {
	ChronoField f = (ChronoField) field;
	return f.isDateBased() \|\| f.isTimeBased();
	}
	return field != null && field.isSupportedBy(this);
	}

	/**
	* Checks if the specified unit is supported.
	* <p>
	* This checks if the specified unit can be added to, or subtracted from, this date-time.
	* If false, then calling the {@link #plus(long, TemporalUnit)} and
	* {@link #minus(long, TemporalUnit) minus} methods will throw an exception.
	* <p>
	* If the unit is a {@link ChronoUnit} then the query is implemented here.
	* The supported units are:
	* <ul>
	* <li>{@code NANOS}
	* <li>{@code MICROS}
	* <li>{@code MILLIS}
	* <li>{@code SECONDS}
	* <li>{@code MINUTES}
	* <li>{@code HOURS}
	* <li>{@code HALF_DAYS}
	* <li>{@code DAYS}
	* <li>{@code WEEKS}
	* <li>{@code MONTHS}
	* <li>{@code YEARS}
	* <li>{@code DECADES}
	* <li>{@code CENTURIES}
	* <li>{@code MILLENNIA}
	* <li>{@code ERAS}
	* </ul>
	* All other {@code ChronoUnit} instances will return false.
	* <p>
	* If the unit is not a {@code ChronoUnit}, then the result of this method
	* is obtained by invoking {@code TemporalUnit.isSupportedBy(Temporal)}
	* passing {@code this} as the argument.
	* Whether the unit is supported is determined by the unit.
	*
	* @param unit the unit to check, null returns false
	* @return true if the unit can be added/subtracted, false if not
	*/
	@Override // override for Javadoc
	public boolean isSupported(TemporalUnit unit) {
	return ChronoLocalDateTime.super.isSupported(unit);
	}

	//-----------------------------------------------------------------------
	/**
	* 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 date-time 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 an {@code UnsupportedTemporalTypeException}.
	* <p>
	* If the field is not a {@code ChronoField}, then the result of this method
	* is obtained by invoking {@code TemporalField.rangeRefinedBy(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
	* @throws UnsupportedTemporalTypeException if the field is not supported
	*/
	@Override
	public ValueRange range(TemporalField field) {
	if (field instanceof ChronoField) {
	ChronoField f = (ChronoField) field;
	return (f.isTimeBased() ? time.range(field) : date.range(field));
	}
	return field.rangeRefinedBy(this);
	}

	/**
	* Gets the value of the specified field from this date-time as an {@code int}.
	* <p>
	* This queries this date-time for the value of 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 date-time, except {@code NANO_OF_DAY}, {@code MICRO_OF_DAY},
	* {@code EPOCH_DAY} and {@code PROLEPTIC_MONTH} which are too large to fit in
	* an {@code int} and throw a {@code DateTimeException}.
	* All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}.
	* <p>
	* If the field is not a {@code ChronoField}, then the result of this method
	* is obtained by invoking {@code TemporalField.getFrom(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 or
	* the value is outside the range of valid values for the field
	* @throws UnsupportedTemporalTypeException if the field is not supported or
	* the range of values exceeds an {@code int}
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public int get(TemporalField field) {
	if (field instanceof ChronoField) {
	ChronoField f = (ChronoField) field;
	return (f.isTimeBased() ? time.get(field) : date.get(field));
	}
	return ChronoLocalDateTime.super.get(field);
	}

	/**
	* Gets the value of the specified field from this date-time as a {@code long}.
	* <p>
	* This queries this date-time for the value of 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 date-time.
	* All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}.
	* <p>
	* If the field is not a {@code ChronoField}, then the result of this method
	* is obtained by invoking {@code TemporalField.getFrom(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 UnsupportedTemporalTypeException if the field is not supported
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public long getLong(TemporalField field) {
	if (field instanceof ChronoField) {
	ChronoField f = (ChronoField) field;
	return (f.isTimeBased() ? time.getLong(field) : date.getLong(field));
	}
	return field.getFrom(this);
	}

	//-----------------------------------------------------------------------
	/**
	* Gets the {@code LocalDate} part of this date-time.
	* <p>
	* This returns a {@code LocalDate} with the same year, month and day
	* as this date-time.
	*
	* @return the date part of this date-time, not null
	*/
	@Override
	public LocalDate toLocalDate() {
	return date;
	}

	/**
	* Gets the year field.
	* <p>
	* This method returns the primitive {@code int} value for the year.
	* <p>
	* The year returned by this method is proleptic as per {@code get(YEAR)}.
	* To obtain the year-of-era, use {@code get(YEAR_OF_ERA)}.
	*
	* @return the year, from MIN_YEAR to MAX_YEAR
	*/
	public int getYear() {
	return date.getYear();
	}

	/**
	* Gets the month-of-year field from 1 to 12.
	* <p>
	* This method returns the month as an {@code int} from 1 to 12.
	* Application code is frequently clearer if the enum {@link Month}
	* is used by calling {@link #getMonth()}.
	*
	* @return the month-of-year, from 1 to 12
	* @see #getMonth()
	*/
	public int getMonthValue() {
	return date.getMonthValue();
	}

	/**
	* 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
	* @see #getMonthValue()
	*/
	public Month getMonth() {
	return date.getMonth();
	}

	/**
	* 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 date.getDayOfMonth();
	}

	/**
	* Gets the day-of-year field.
	* <p>
	* This method returns the primitive {@code int} value for the day-of-year.
	*
	* @return the day-of-year, from 1 to 365, or 366 in a leap year
	*/
	public int getDayOfYear() {
	return date.getDayOfYear();
	}

	/**
	* Gets the day-of-week field, which is an enum {@code DayOfWeek}.
	* <p>
	* This method returns the enum {@link DayOfWeek} for the day-of-week.
	* 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 DayOfWeek#getValue() int value}.
	* <p>
	* Additional information can be obtained from the {@code DayOfWeek}.
	* This includes textual names of the values.
	*
	* @return the day-of-week, not null
	*/
	public DayOfWeek getDayOfWeek() {
	return date.getDayOfWeek();
	}

	//-----------------------------------------------------------------------
	/**
	* Gets the {@code LocalTime} part of this date-time.
	* <p>
	* This returns a {@code LocalTime} with the same hour, minute, second and
	* nanosecond as this date-time.
	*
	* @return the time part of this date-time, not null
	*/
	@Override
	public LocalTime toLocalTime() {
	return time;
	}

	/**
	* Gets the hour-of-day field.
	*
	* @return the hour-of-day, from 0 to 23
	*/
	public int getHour() {
	return time.getHour();
	}

	/**
	* Gets the minute-of-hour field.
	*
	* @return the minute-of-hour, from 0 to 59
	*/
	public int getMinute() {
	return time.getMinute();
	}

	/**
	* Gets the second-of-minute field.
	*
	* @return the second-of-minute, from 0 to 59
	*/
	public int getSecond() {
	return time.getSecond();
	}

	/**
	* Gets the nano-of-second field.
	*
	* @return the nano-of-second, from 0 to 999,999,999
	*/
	public int getNano() {
	return time.getNano();
	}

	//-----------------------------------------------------------------------
	/**
	* Returns an adjusted copy of this date-time.
	* <p>
	* This returns a {@code LocalDateTime}, based on this one, with the date-time adjusted.
	* The adjustment takes place using the specified adjuster strategy object.
	* Read the documentation of the adjuster to understand what adjustment will be made.
	* <p>
	* A simple adjuster might simply set the one of the fields, such as the year field.
	* A more complex adjuster might set the date to the last day of the month.
	* <p>
	* A selection of common adjustments is provided in
	* {@link java.time.temporal.TemporalAdjusters TemporalAdjusters}.
	* These include finding the "last day of the month" and "next Wednesday".
	* Key date-time classes also implement the {@code TemporalAdjuster} interface,
	* such as {@link Month} and {@link java.time.MonthDay MonthDay}.
	* The adjuster is responsible for handling special cases, such as the varying
	* lengths of month and leap years.
	* <p>
	* For example this code returns a date on the last day of July:
	* <pre>
	* import static java.time.Month.*;
	* import static java.time.temporal.TemporalAdjusters.*;
	*
	* result = localDateTime.with(JULY).with(lastDayOfMonth());
	* </pre>
	* <p>
	* The classes {@link LocalDate} and {@link LocalTime} implement {@code TemporalAdjuster},
	* thus this method can be used to change the date, time or offset:
	* <pre>
	* result = localDateTime.with(date);
	* result = localDateTime.with(time);
	* </pre>
	* <p>
	* The result of this method is obtained by invoking the
	* {@link TemporalAdjuster#adjustInto(Temporal)} method on the
	* specified adjuster passing {@code this} as the argument.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param adjuster the adjuster to use, not null
	* @return a {@code LocalDateTime} based on {@code this} with the adjustment made, not null
	* @throws DateTimeException if the adjustment cannot be made
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public LocalDateTime with(TemporalAdjuster adjuster) {
	// optimizations
	if (adjuster instanceof LocalDate) {
	return with((LocalDate) adjuster, time);
	} else if (adjuster instanceof LocalTime) {
	return with(date, (LocalTime) adjuster);
	} else if (adjuster instanceof LocalDateTime) {
	return (LocalDateTime) adjuster;
	}
	return (LocalDateTime) adjuster.adjustInto(this);
	}

	/**
	* Returns a copy of this date-time with the specified field set to a new value.
	* <p>
	* This returns a {@code LocalDateTime}, based on this one, with the value
	* for the specified field changed.
	* This can be used to change any supported field, such as the year, month or day-of-month.
	* If it is not possible to set the value, because the field is not supported or for
	* some other reason, an exception is thrown.
	* <p>
	* In some cases, changing the specified field can cause the resulting date-time to become invalid,
	* such as changing the month from 31st January to February would make the day-of-month invalid.
	* In cases like this, the field is responsible for resolving the date. Typically it will choose
	* the previous valid date, which would be the last valid day of February in this example.
	* <p>
	* If the field is a {@link ChronoField} then the adjustment is implemented here.
	* The {@link #isSupported(TemporalField) supported fields} will behave as per
	* the matching method on {@link LocalDate#with(TemporalField, long) LocalDate}
	* or {@link LocalTime#with(TemporalField, long) LocalTime}.
	* All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}.
	* <p>
	* If the field is not a {@code ChronoField}, then the result of this method
	* is obtained by invoking {@code TemporalField.adjustInto(Temporal, long)}
	* passing {@code this} as the argument. In this case, the field determines
	* whether and how to adjust the instant.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param field the field to set in the result, not null
	* @param newValue the new value of the field in the result
	* @return a {@code LocalDateTime} based on {@code this} with the specified field set, not null
	* @throws DateTimeException if the field cannot be set
	* @throws UnsupportedTemporalTypeException if the field is not supported
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public LocalDateTime with(TemporalField field, long newValue) {
	if (field instanceof ChronoField) {
	ChronoField f = (ChronoField) field;
	if (f.isTimeBased()) {
	return with(date, time.with(field, newValue));
	} else {
	return with(date.with(field, newValue), time);
	}
	}
	return field.adjustInto(this, newValue);
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this {@code LocalDateTime} with the year altered.
	* <p>
	* The time does not affect the calculation and will be the same in the result.
	* If the day-of-month is invalid for the year, it will be changed to the last valid day of the month.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param year the year to set in the result, from MIN_YEAR to MAX_YEAR
	* @return a {@code LocalDateTime} based on this date-time with the requested year, not null
	* @throws DateTimeException if the year value is invalid
	*/
	public LocalDateTime withYear(int year) {
	return with(date.withYear(year), time);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the month-of-year altered.
	* <p>
	* The time does not affect the calculation and will be the same in the result.
	* If the day-of-month is invalid for the year, it will be changed to the last valid day of the month.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param month the month-of-year to set in the result, from 1 (January) to 12 (December)
	* @return a {@code LocalDateTime} based on this date-time with the requested month, not null
	* @throws DateTimeException if the month-of-year value is invalid
	*/
	public LocalDateTime withMonth(int month) {
	return with(date.withMonth(month), time);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the day-of-month altered.
	* <p>
	* If the resulting date-time is invalid, an exception is thrown.
	* The time does not affect the calculation and will be the same in the result.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param dayOfMonth the day-of-month to set in the result, from 1 to 28-31
	* @return a {@code LocalDateTime} based on this date-time with the requested day, not null
	* @throws DateTimeException if the day-of-month value is invalid,
	* or if the day-of-month is invalid for the month-year
	*/
	public LocalDateTime withDayOfMonth(int dayOfMonth) {
	return with(date.withDayOfMonth(dayOfMonth), time);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the day-of-year altered.
	* <p>
	* If the resulting date-time is invalid, an exception is thrown.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param dayOfYear the day-of-year to set in the result, from 1 to 365-366
	* @return a {@code LocalDateTime} based on this date with the requested day, not null
	* @throws DateTimeException if the day-of-year value is invalid,
	* or if the day-of-year is invalid for the year
	*/
	public LocalDateTime withDayOfYear(int dayOfYear) {
	return with(date.withDayOfYear(dayOfYear), time);
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this {@code LocalDateTime} with the hour-of-day altered.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param hour the hour-of-day to set in the result, from 0 to 23
	* @return a {@code LocalDateTime} based on this date-time with the requested hour, not null
	* @throws DateTimeException if the hour value is invalid
	*/
	public LocalDateTime withHour(int hour) {
	LocalTime newTime = time.withHour(hour);
	return with(date, newTime);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the minute-of-hour altered.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param minute the minute-of-hour to set in the result, from 0 to 59
	* @return a {@code LocalDateTime} based on this date-time with the requested minute, not null
	* @throws DateTimeException if the minute value is invalid
	*/
	public LocalDateTime withMinute(int minute) {
	LocalTime newTime = time.withMinute(minute);
	return with(date, newTime);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the second-of-minute altered.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param second the second-of-minute to set in the result, from 0 to 59
	* @return a {@code LocalDateTime} based on this date-time with the requested second, not null
	* @throws DateTimeException if the second value is invalid
	*/
	public LocalDateTime withSecond(int second) {
	LocalTime newTime = time.withSecond(second);
	return with(date, newTime);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the nano-of-second altered.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param nanoOfSecond the nano-of-second to set in the result, from 0 to 999,999,999
	* @return a {@code LocalDateTime} based on this date-time with the requested nanosecond, not null
	* @throws DateTimeException if the nano value is invalid
	*/
	public LocalDateTime withNano(int nanoOfSecond) {
	LocalTime newTime = time.withNano(nanoOfSecond);
	return with(date, newTime);
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this {@code LocalDateTime} with the time truncated.
	* <p>
	* Truncation returns a copy of the original date-time with fields
	* smaller than the specified unit set to zero.
	* For example, truncating with the {@link ChronoUnit#MINUTES minutes} unit
	* will set the second-of-minute and nano-of-second field to zero.
	* <p>
	* The unit must have a {@linkplain TemporalUnit#getDuration() duration}
	* that divides into the length of a standard day without remainder.
	* This includes all supplied time units on {@link ChronoUnit} and
	* {@link ChronoUnit#DAYS DAYS}. Other units throw an exception.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param unit the unit to truncate to, not null
	* @return a {@code LocalDateTime} based on this date-time with the time truncated, not null
	* @throws DateTimeException if unable to truncate
	* @throws UnsupportedTemporalTypeException if the unit is not supported
	*/
	public LocalDateTime truncatedTo(TemporalUnit unit) {
	return with(date, time.truncatedTo(unit));
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this date-time with the specified amount added.
	* <p>
	* This returns a {@code LocalDateTime}, based on this one, with the specified amount added.
	* The amount is typically {@link Period} or {@link Duration} but may be
	* any other type implementing the {@link TemporalAmount} interface.
	* <p>
	* The calculation is delegated to the amount object by calling
	* {@link TemporalAmount#addTo(Temporal)}. The amount implementation is free
	* to implement the addition in any way it wishes, however it typically
	* calls back to {@link #plus(long, TemporalUnit)}. Consult the documentation
	* of the amount implementation to determine if it can be successfully added.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param amountToAdd the amount to add, not null
	* @return a {@code LocalDateTime} based on this date-time with the addition made, not null
	* @throws DateTimeException if the addition cannot be made
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public LocalDateTime plus(TemporalAmount amountToAdd) {
	if (amountToAdd instanceof Period) {
	Period periodToAdd = (Period) amountToAdd;
	return with(date.plus(periodToAdd), time);
	}
	Objects.requireNonNull(amountToAdd, "amountToAdd");
	return (LocalDateTime) amountToAdd.addTo(this);
	}

	/**
	* Returns a copy of this date-time with the specified amount added.
	* <p>
	* This returns a {@code LocalDateTime}, based on this one, with the amount
	* in terms of the unit added. If it is not possible to add the amount, because the
	* unit is not supported or for some other reason, an exception is thrown.
	* <p>
	* If the field is a {@link ChronoUnit} then the addition is implemented here.
	* Date units are added as per {@link LocalDate#plus(long, TemporalUnit)}.
	* Time units are added as per {@link LocalTime#plus(long, TemporalUnit)} with
	* any overflow in days added equivalent to using {@link #plusDays(long)}.
	* <p>
	* If the field is not a {@code ChronoUnit}, then the result of this method
	* is obtained by invoking {@code TemporalUnit.addTo(Temporal, long)}
	* passing {@code this} as the argument. In this case, the unit determines
	* whether and how to perform the addition.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param amountToAdd the amount of the unit to add to the result, may be negative
	* @param unit the unit of the amount to add, not null
	* @return a {@code LocalDateTime} based on this date-time with the specified amount added, not null
	* @throws DateTimeException if the addition cannot be made
	* @throws UnsupportedTemporalTypeException if the unit is not supported
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public LocalDateTime plus(long amountToAdd, TemporalUnit unit) {
	if (unit instanceof ChronoUnit) {
	ChronoUnit f = (ChronoUnit) unit;
	switch (f) {
	case NANOS: return plusNanos(amountToAdd);
	case MICROS: return plusDays(amountToAdd / MICROS_PER_DAY).plusNanos((amountToAdd % MICROS_PER_DAY) * 1000);
	case MILLIS: return plusDays(amountToAdd / MILLIS_PER_DAY).plusNanos((amountToAdd % MILLIS_PER_DAY) * 1000_000);
	case SECONDS: return plusSeconds(amountToAdd);
	case MINUTES: return plusMinutes(amountToAdd);
	case HOURS: return plusHours(amountToAdd);
	case HALF_DAYS: return plusDays(amountToAdd / 256).plusHours((amountToAdd % 256) * 12); // no overflow (256 is multiple of 2)
	}
	return with(date.plus(amountToAdd, unit), time);
	}
	return unit.addTo(this, amountToAdd);
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of years added.
	* <p>
	* This method adds the specified amount to the years field in three steps:
	* <ol>
	* <li>Add the input years to the year field</li>
	* <li>Check if the resulting date would be invalid</li>
	* <li>Adjust the day-of-month to the last valid day if necessary</li>
	* </ol>
	* <p>
	* For example, 2008-02-29 (leap year) plus one year would result in the
	* invalid date 2009-02-29 (standard year). Instead of returning an invalid
	* result, the last valid day of the month, 2009-02-28, is selected instead.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param years the years to add, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the years added, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime plusYears(long years) {
	LocalDate newDate = date.plusYears(years);
	return with(newDate, time);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of months added.
	* <p>
	* This method adds the specified amount to the months field in three steps:
	* <ol>
	* <li>Add the input months to the month-of-year field</li>
	* <li>Check if the resulting date would be invalid</li>
	* <li>Adjust the day-of-month to the last valid day if necessary</li>
	* </ol>
	* <p>
	* For example, 2007-03-31 plus one month would result in the invalid date
	* 2007-04-31. Instead of returning an invalid result, the last valid day
	* of the month, 2007-04-30, is selected instead.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param months the months to add, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the months added, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime plusMonths(long months) {
	LocalDate newDate = date.plusMonths(months);
	return with(newDate, time);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of weeks added.
	* <p>
	* This method adds the specified amount in weeks to the days field incrementing
	* the month and year fields as necessary to ensure the result remains valid.
	* The result is only invalid if the maximum/minimum year is exceeded.
	* <p>
	* For example, 2008-12-31 plus one week would result in 2009-01-07.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param weeks the weeks to add, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the weeks added, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime plusWeeks(long weeks) {
	LocalDate newDate = date.plusWeeks(weeks);
	return with(newDate, time);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of days added.
	* <p>
	* This method adds the specified amount to the days field incrementing the
	* month and year fields as necessary to ensure the result remains valid.
	* The result is only invalid if the maximum/minimum year is exceeded.
	* <p>
	* For example, 2008-12-31 plus one day would result in 2009-01-01.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param days the days to add, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the days added, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime plusDays(long days) {
	LocalDate newDate = date.plusDays(days);
	return with(newDate, time);
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of hours added.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param hours the hours to add, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the hours added, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime plusHours(long hours) {
	return plusWithOverflow(date, hours, 0, 0, 0, 1);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of minutes added.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param minutes the minutes to add, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the minutes added, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime plusMinutes(long minutes) {
	return plusWithOverflow(date, 0, minutes, 0, 0, 1);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of seconds added.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param seconds the seconds to add, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the seconds added, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime plusSeconds(long seconds) {
	return plusWithOverflow(date, 0, 0, seconds, 0, 1);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of nanoseconds added.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param nanos the nanos to add, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the nanoseconds added, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime plusNanos(long nanos) {
	return plusWithOverflow(date, 0, 0, 0, nanos, 1);
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this date-time with the specified amount subtracted.
	* <p>
	* This returns a {@code LocalDateTime}, based on this one, with the specified amount subtracted.
	* The amount is typically {@link Period} or {@link Duration} but may be
	* any other type implementing the {@link TemporalAmount} interface.
	* <p>
	* The calculation is delegated to the amount object by calling
	* {@link TemporalAmount#subtractFrom(Temporal)}. The amount implementation is free
	* to implement the subtraction in any way it wishes, however it typically
	* calls back to {@link #minus(long, TemporalUnit)}. Consult the documentation
	* of the amount implementation to determine if it can be successfully subtracted.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param amountToSubtract the amount to subtract, not null
	* @return a {@code LocalDateTime} based on this date-time with the subtraction made, not null
	* @throws DateTimeException if the subtraction cannot be made
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public LocalDateTime minus(TemporalAmount amountToSubtract) {
	if (amountToSubtract instanceof Period) {
	Period periodToSubtract = (Period) amountToSubtract;
	return with(date.minus(periodToSubtract), time);
	}
	Objects.requireNonNull(amountToSubtract, "amountToSubtract");
	return (LocalDateTime) amountToSubtract.subtractFrom(this);
	}

	/**
	* Returns a copy of this date-time with the specified amount subtracted.
	* <p>
	* This returns a {@code LocalDateTime}, based on this one, with the amount
	* in terms of the unit subtracted. If it is not possible to subtract the amount,
	* because the unit is not supported or for some other reason, an exception is thrown.
	* <p>
	* This method is equivalent to {@link #plus(long, TemporalUnit)} with the amount negated.
	* See that method for a full description of how addition, and thus subtraction, works.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param amountToSubtract the amount of the unit to subtract from the result, may be negative
	* @param unit the unit of the amount to subtract, not null
	* @return a {@code LocalDateTime} based on this date-time with the specified amount subtracted, not null
	* @throws DateTimeException if the subtraction cannot be made
	* @throws UnsupportedTemporalTypeException if the unit is not supported
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public LocalDateTime minus(long amountToSubtract, TemporalUnit unit) {
	return (amountToSubtract == Long.MIN_VALUE ? plus(Long.MAX_VALUE, unit).plus(1, unit) : plus(-amountToSubtract, unit));
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of years subtracted.
	* <p>
	* This method subtracts the specified amount from the years field in three steps:
	* <ol>
	* <li>Subtract the input years from the year field</li>
	* <li>Check if the resulting date would be invalid</li>
	* <li>Adjust the day-of-month to the last valid day if necessary</li>
	* </ol>
	* <p>
	* For example, 2008-02-29 (leap year) minus one year would result in the
	* invalid date 2009-02-29 (standard year). Instead of returning an invalid
	* result, the last valid day of the month, 2009-02-28, is selected instead.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param years the years to subtract, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the years subtracted, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime minusYears(long years) {
	return (years == Long.MIN_VALUE ? plusYears(Long.MAX_VALUE).plusYears(1) : plusYears(-years));
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of months subtracted.
	* <p>
	* This method subtracts the specified amount from the months field in three steps:
	* <ol>
	* <li>Subtract the input months from the month-of-year field</li>
	* <li>Check if the resulting date would be invalid</li>
	* <li>Adjust the day-of-month to the last valid day if necessary</li>
	* </ol>
	* <p>
	* For example, 2007-03-31 minus one month would result in the invalid date
	* 2007-04-31. Instead of returning an invalid result, the last valid day
	* of the month, 2007-04-30, is selected instead.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param months the months to subtract, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the months subtracted, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime minusMonths(long months) {
	return (months == Long.MIN_VALUE ? plusMonths(Long.MAX_VALUE).plusMonths(1) : plusMonths(-months));
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of weeks subtracted.
	* <p>
	* This method subtracts the specified amount in weeks from the days field decrementing
	* the month and year fields as necessary to ensure the result remains valid.
	* The result is only invalid if the maximum/minimum year is exceeded.
	* <p>
	* For example, 2009-01-07 minus one week would result in 2008-12-31.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param weeks the weeks to subtract, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the weeks subtracted, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime minusWeeks(long weeks) {
	return (weeks == Long.MIN_VALUE ? plusWeeks(Long.MAX_VALUE).plusWeeks(1) : plusWeeks(-weeks));
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of days subtracted.
	* <p>
	* This method subtracts the specified amount from the days field decrementing the
	* month and year fields as necessary to ensure the result remains valid.
	* The result is only invalid if the maximum/minimum year is exceeded.
	* <p>
	* For example, 2009-01-01 minus one day would result in 2008-12-31.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param days the days to subtract, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the days subtracted, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime minusDays(long days) {
	return (days == Long.MIN_VALUE ? plusDays(Long.MAX_VALUE).plusDays(1) : plusDays(-days));
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of hours subtracted.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param hours the hours to subtract, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the hours subtracted, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime minusHours(long hours) {
	return plusWithOverflow(date, hours, 0, 0, 0, -1);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of minutes subtracted.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param minutes the minutes to subtract, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the minutes subtracted, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime minusMinutes(long minutes) {
	return plusWithOverflow(date, 0, minutes, 0, 0, -1);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of seconds subtracted.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param seconds the seconds to subtract, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the seconds subtracted, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime minusSeconds(long seconds) {
	return plusWithOverflow(date, 0, 0, seconds, 0, -1);
	}

	/**
	* Returns a copy of this {@code LocalDateTime} with the specified number of nanoseconds subtracted.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param nanos the nanos to subtract, may be negative
	* @return a {@code LocalDateTime} based on this date-time with the nanoseconds subtracted, not null
	* @throws DateTimeException if the result exceeds the supported date range
	*/
	public LocalDateTime minusNanos(long nanos) {
	return plusWithOverflow(date, 0, 0, 0, nanos, -1);
	}

	//-----------------------------------------------------------------------
	/**
	* Returns a copy of this {@code LocalDateTime} with the specified period added.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param newDate the new date to base the calculation on, not null
	* @param hours the hours to add, may be negative
	* @param minutes the minutes to add, may be negative
	* @param seconds the seconds to add, may be negative
	* @param nanos the nanos to add, may be negative
	* @param sign the sign to determine add or subtract
	* @return the combined result, not null
	*/
	private LocalDateTime plusWithOverflow(LocalDate newDate, long hours, long minutes, long seconds, long nanos, int sign) {
	// 9223372036854775808 long, 2147483648 int
	if ((hours \| minutes \| seconds \| nanos) == 0) {
	return with(newDate, time);
	}
	long totDays = nanos / NANOS_PER_DAY + // max/246060*1B
	seconds / SECONDS_PER_DAY + // max/246060
	minutes / MINUTES_PER_DAY + // max/24*60
	hours / HOURS_PER_DAY; // max/24
	totDays = sign; // total max0.4237...
	long totNanos = nanos % NANOS_PER_DAY + // max 86400000000000
	(seconds % SECONDS_PER_DAY) * NANOS_PER_SECOND + // max 86400000000000
	(minutes % MINUTES_PER_DAY) * NANOS_PER_MINUTE + // max 86400000000000
	(hours % HOURS_PER_DAY) * NANOS_PER_HOUR; // max 86400000000000
	long curNoD = time.toNanoOfDay(); // max 86400000000000
	totNanos = totNanos * sign + curNoD; // total 432000000000000
	totDays += Math.floorDiv(totNanos, NANOS_PER_DAY);
	long newNoD = Math.floorMod(totNanos, NANOS_PER_DAY);
	LocalTime newTime = (newNoD == curNoD ? time : LocalTime.ofNanoOfDay(newNoD));
	return with(newDate.plusDays(totDays), newTime);
	}

	//-----------------------------------------------------------------------
	/**
	* Queries this date-time using the specified query.
	* <p>
	* This queries this date-time 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 // override for Javadoc
	public <R> R query(TemporalQuery<R> query) {
	if (query == TemporalQueries.localDate()) {
	return (R) date;
	}
	return ChronoLocalDateTime.super.query(query);
	}

	/**
	* Adjusts the specified temporal object to have the same date and time as this object.
	* <p>
	* This returns a temporal object of the same observable type as the input
	* with the date and time changed to be the same as this.
	* <p>
	* The adjustment is equivalent to using {@link Temporal#with(TemporalField, long)}
	* twice, passing {@link ChronoField#EPOCH_DAY} and
	* {@link ChronoField#NANO_OF_DAY} as the fields.
	* <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 = thisLocalDateTime.adjustInto(temporal);
	* temporal = temporal.with(thisLocalDateTime);
	* </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 // override for Javadoc
	public Temporal adjustInto(Temporal temporal) {
	return ChronoLocalDateTime.super.adjustInto(temporal);
	}

	/**
	* Calculates the amount of time until another date-time in terms of the specified unit.
	* <p>
	* This calculates the amount of time between two {@code LocalDateTime}
	* objects in terms of a single {@code TemporalUnit}.
	* The start and end points are {@code this} and the specified date-time.
	* The result will be negative if the end is before the start.
	* The {@code Temporal} passed to this method is converted to a
	* {@code LocalDateTime} using {@link #from(TemporalAccessor)}.
	* For example, the amount in days between two date-times can be calculated
	* using {@code startDateTime.until(endDateTime, DAYS)}.
	* <p>
	* The calculation returns a whole number, representing the number of
	* complete units between the two date-times.
	* For example, the amount in months between 2012-06-15T00:00 and 2012-08-14T23:59
	* will only be one month as it is one minute short of two months.
	* <p>
	* There are two equivalent ways of using this method.
	* The first is to invoke this method.
	* The second is to use {@link TemporalUnit#between(Temporal, Temporal)}:
	* <pre>
	* // these two lines are equivalent
	* amount = start.until(end, MONTHS);
	* amount = MONTHS.between(start, end);
	* </pre>
	* The choice should be made based on which makes the code more readable.
	* <p>
	* The calculation is implemented in this method for {@link ChronoUnit}.
	* The units {@code NANOS}, {@code MICROS}, {@code MILLIS}, {@code SECONDS},
	* {@code MINUTES}, {@code HOURS} and {@code HALF_DAYS}, {@code DAYS},
	* {@code WEEKS}, {@code MONTHS}, {@code YEARS}, {@code DECADES},
	* {@code CENTURIES}, {@code MILLENNIA} and {@code ERAS} are supported.
	* Other {@code ChronoUnit} values will throw an exception.
	* <p>
	* If the unit is not a {@code ChronoUnit}, then the result of this method
	* is obtained by invoking {@code TemporalUnit.between(Temporal, Temporal)}
	* passing {@code this} as the first argument and the converted input temporal
	* as the second argument.
	* <p>
	* This instance is immutable and unaffected by this method call.
	*
	* @param endExclusive the end date, exclusive, which is converted to a {@code LocalDateTime}, not null
	* @param unit the unit to measure the amount in, not null
	* @return the amount of time between this date-time and the end date-time
	* @throws DateTimeException if the amount cannot be calculated, or the end
	* temporal cannot be converted to a {@code LocalDateTime}
	* @throws UnsupportedTemporalTypeException if the unit is not supported
	* @throws ArithmeticException if numeric overflow occurs
	*/
	@Override
	public long until(Temporal endExclusive, TemporalUnit unit) {
	LocalDateTime end = LocalDateTime.from(endExclusive);
	if (unit instanceof ChronoUnit) {
	if (unit.isTimeBased()) {
	long amount = date.daysUntil(end.date);
	if (amount == 0) {
	return time.until(end.time, unit);
	}
	long timePart = end.time.toNanoOfDay() - time.toNanoOfDay();
	if (amount > 0) {
	amount--; // safe
	timePart += NANOS_PER_DAY; // safe
	} else {
	amount++; // safe
	timePart -= NANOS_PER_DAY; // safe
	}
	switch ((ChronoUnit) unit) {
	case NANOS:
	amount = Math.multiplyExact(amount, NANOS_PER_DAY);
	break;
	case MICROS:
	amount = Math.multiplyExact(amount, MICROS_PER_DAY);
	timePart = timePart / 1000;
	break;
	case MILLIS:
	amount = Math.multiplyExact(amount, MILLIS_PER_DAY);
	timePart = timePart / 1_000_000;
	break;
	case SECONDS:
	amount = Math.multiplyExact(amount, SECONDS_PER_DAY);
	timePart = timePart / NANOS_PER_SECOND;
	break;
	case MINUTES:
	amount = Math.multiplyExact(amount, MINUTES_PER_DAY);
	timePart = timePart / NANOS_PER_MINUTE;
	break;
	case HOURS:
	amount = Math.multiplyExact(amount, HOURS_PER_DAY);
	timePart = timePart / NANOS_PER_HOUR;
	break;
	case HALF_DAYS:
	amount = Math.multiplyExact(amount, 2);
	timePart = timePart / (NANOS_PER_HOUR * 12);
	break;
	}
	return Math.addExact(amount, timePart);
	}
	LocalDate endDate = end.date;
	if (endDate.isAfter(date) && end.time.isBefore(time)) {
	endDate = endDate.minusDays(1);
	} else if (endDate.isBefore(date) && end.time.isAfter(time)) {
	endDate = endDate.plusDays(1);
	}
	return date.until(endDate, unit);
	}
	return unit.between(this, end);
	}

	/**
	* Formats this date-time using the specified formatter.
	* <p>
	* This date-time will be passed to the formatter to produce a string.
	*
	* @param formatter the formatter to use, not null
	* @return the formatted date-time string, not null
	* @throws DateTimeException if an error occurs during printing
	*/
	@Override // override for Javadoc and performance
	public String format(DateTimeFormatter formatter) {
	Objects.requireNonNull(formatter, "formatter");
	return formatter.format(this);
	}

	//-----------------------------------------------------------------------
	/**
	* Combines this date-time with an offset to create an {@code OffsetDateTime}.
	* <p>
	* This returns an {@code OffsetDateTime} formed from this date-time at the specified offset.
	* All possible combinations of date-time and offset are valid.
	*
	* @param offset the offset to combine with, not null
	* @return the offset date-time formed from this date-time and the specified offset, not null
	*/
	public OffsetDateTime atOffset(ZoneOffset offset) {
	return OffsetDateTime.of(this, offset);
	}

	/**
	* Combines this date-time with a time-zone to create a {@code ZonedDateTime}.
	* <p>
	* This returns a {@code ZonedDateTime} formed from this date-time at the
	* specified time-zone. The result will match this date-time as closely as possible.
	* Time-zone rules, such as daylight savings, mean that not every local date-time
	* is valid for the specified zone, thus the local date-time may be adjusted.
	* <p>
	* The local date-time is resolved to a single instant on the time-line.
	* This is achieved by finding a valid offset from UTC/Greenwich for the local
	* date-time as defined by the {@link ZoneRules rules} of the zone ID.
	*<p>
	* In most cases, there is only one valid offset for a local date-time.
	* In the case of an overlap, where clocks are set back, there are two valid offsets.
	* This method uses the earlier offset typically corresponding to "summer".
	* <p>
	* In the case of a gap, where clocks jump forward, there is no valid offset.
	* Instead, the local date-time is adjusted to be later by the length of the gap.
	* For a typical one hour daylight savings change, the local date-time will be
	* moved one hour later into the offset typically corresponding to "summer".
	* <p>
	* To obtain the later offset during an overlap, call
	* {@link ZonedDateTime#withLaterOffsetAtOverlap()} on the result of this method.
	* To throw an exception when there is a gap or overlap, use
	* {@link ZonedDateTime#ofStrict(LocalDateTime, ZoneOffset, ZoneId)}.
	*
	* @param zone the time-zone to use, not null
	* @return the zoned date-time formed from this date-time, not null
	*/
	@Override
	public ZonedDateTime atZone(ZoneId zone) {
	return ZonedDateTime.of(this, zone);
	}

	//-----------------------------------------------------------------------
	/**
	* Compares this date-time to another date-time.
	* <p>
	* The comparison is primarily based on the date-time, from earliest to latest.
	* It is "consistent with equals", as defined by {@link Comparable}.
	* <p>
	* If all the date-times being compared are instances of {@code LocalDateTime},
	* then the comparison will be entirely based on the date-time.
	* If some dates being compared are in different chronologies, then the
	* chronology is also considered, see {@link ChronoLocalDateTime#compareTo}.
	*
	* @param other the other date-time to compare to, not null
	* @return the comparator value, negative if less, positive if greater
	*/
	@Override // override for Javadoc and performance
	public int compareTo(ChronoLocalDateTime<?> other) {
	if (other instanceof LocalDateTime) {
	return compareTo0((LocalDateTime) other);
	}
	return ChronoLocalDateTime.super.compareTo(other);
	}

	private int compareTo0(LocalDateTime other) {
	int cmp = date.compareTo0(other.toLocalDate());
	if (cmp == 0) {
	cmp = time.compareTo(other.toLocalTime());
	}
	return cmp;
	}

	/**
	* Checks if this date-time is after the specified date-time.
	* <p>
	* This checks to see if this date-time represents a point on the
	* local time-line after the other date-time.
	* <pre>
	* LocalDate a = LocalDateTime.of(2012, 6, 30, 12, 00);
	* LocalDate b = LocalDateTime.of(2012, 7, 1, 12, 00);
	* a.isAfter(b) == false
	* a.isAfter(a) == false
	* b.isAfter(a) == true
	* </pre>
	* <p>
	* This method only considers the position of the two date-times on the local time-line.
	* It does not take into account the chronology, or calendar system.
	* This is different from the comparison in {@link #compareTo(ChronoLocalDateTime)},
	* but is the same approach as {@link ChronoLocalDateTime#timeLineOrder()}.
	*
	* @param other the other date-time to compare to, not null
	* @return true if this date-time is after the specified date-time
	*/
	@Override // override for Javadoc and performance
	public boolean isAfter(ChronoLocalDateTime<?> other) {
	if (other instanceof LocalDateTime) {
	return compareTo0((LocalDateTime) other) > 0;
	}
	return ChronoLocalDateTime.super.isAfter(other);
	}

	/**
	* Checks if this date-time is before the specified date-time.
	* <p>
	* This checks to see if this date-time represents a point on the
	* local time-line before the other date-time.
	* <pre>
	* LocalDate a = LocalDateTime.of(2012, 6, 30, 12, 00);
	* LocalDate b = LocalDateTime.of(2012, 7, 1, 12, 00);
	* a.isBefore(b) == true
	* a.isBefore(a) == false
	* b.isBefore(a) == false
	* </pre>
	* <p>
	* This method only considers the position of the two date-times on the local time-line.
	* It does not take into account the chronology, or calendar system.
	* This is different from the comparison in {@link #compareTo(ChronoLocalDateTime)},
	* but is the same approach as {@link ChronoLocalDateTime#timeLineOrder()}.
	*
	* @param other the other date-time to compare to, not null
	* @return true if this date-time is before the specified date-time
	*/
	@Override // override for Javadoc and performance
	public boolean isBefore(ChronoLocalDateTime<?> other) {
	if (other instanceof LocalDateTime) {
	return compareTo0((LocalDateTime) other) < 0;
	}
	return ChronoLocalDateTime.super.isBefore(other);
	}

	/**
	* Checks if this date-time is equal to the specified date-time.
	* <p>
	* This checks to see if this date-time represents the same point on the
	* local time-line as the other date-time.
	* <pre>
	* LocalDate a = LocalDateTime.of(2012, 6, 30, 12, 00);
	* LocalDate b = LocalDateTime.of(2012, 7, 1, 12, 00);
	* a.isEqual(b) == false
	* a.isEqual(a) == true
	* b.isEqual(a) == false
	* </pre>
	* <p>
	* This method only considers the position of the two date-times on the local time-line.
	* It does not take into account the chronology, or calendar system.
	* This is different from the comparison in {@link #compareTo(ChronoLocalDateTime)},
	* but is the same approach as {@link ChronoLocalDateTime#timeLineOrder()}.
	*
	* @param other the other date-time to compare to, not null
	* @return true if this date-time is equal to the specified date-time
	*/
	@Override // override for Javadoc and performance
	public boolean isEqual(ChronoLocalDateTime<?> other) {
	if (other instanceof LocalDateTime) {
	return compareTo0((LocalDateTime) other) == 0;
	}
	return ChronoLocalDateTime.super.isEqual(other);
	}

	//-----------------------------------------------------------------------
	/**
	* Checks if this date-time is equal to another date-time.
	* <p>
	* Compares this {@code LocalDateTime} with another ensuring that the date-time is the same.
	* Only objects of type {@code LocalDateTime} are compared, other types return false.
	*
	* @param obj the object to check, null returns false
	* @return true if this is equal to the other date-time
	*/
	@Override
	public boolean equals(Object obj) {
	if (this == obj) {
	return true;
	}
	if (obj instanceof LocalDateTime) {
	LocalDateTime other = (LocalDateTime) obj;
	return date.equals(other.date) && time.equals(other.time);
	}
	return false;
	}

	/**
	* A hash code for this date-time.
	*
	* @return a suitable hash code
	*/
	@Override
	public int hashCode() {
	return date.hashCode() ^ time.hashCode();
	}

	//-----------------------------------------------------------------------
	/**
	* Outputs this date-time as a {@code String}, such as {@code 2007-12-03T10:15:30}.
	* <p>
	* The output will be one of the following ISO-8601 formats:
	* <ul>
	* <li>{@code uuuu-MM-dd'T'HH:mm}</li>
	* <li>{@code uuuu-MM-dd'T'HH:mm:ss}</li>
	* <li>{@code uuuu-MM-dd'T'HH:mm:ss.SSS}</li>
	* <li>{@code uuuu-MM-dd'T'HH:mm:ss.SSSSSS}</li>
	* <li>{@code uuuu-MM-dd'T'HH:mm:ss.SSSSSSSSS}</li>
	* </ul>
	* The format used will be the shortest that outputs the full value of
	* the time where the omitted parts are implied to be zero.
	*
	* @return a string representation of this date-time, not null
	*/
	@Override
	public String toString() {
	return date.toString() + 'T' + time.toString();
	}

	//-----------------------------------------------------------------------
	/**
	* Writes the object using a
	* <a href="../../serialized-form.html#java.time.Ser">dedicated serialized form</a>.
	* @serialData
	* <pre>
	* out.writeByte(5); // identifies a LocalDateTime
	* // the <a href="../../serialized-form.html#java.time.LocalDate">date</a> excluding the one byte header
	* // the <a href="../../serialized-form.html#java.time.LocalTime">time</a> excluding the one byte header
	* </pre>
	*
	* @return the instance of {@code Ser}, not null
	*/
	private Object writeReplace() {
	return new Ser(Ser.LOCAL_DATE_TIME_TYPE, this);
	}

	/**
	* Defend against malicious streams.
	*
	* @param s the stream to read
	* @throws InvalidObjectException always
	*/
	private void readObject(ObjectInputStream s) throws InvalidObjectException {
	throw new InvalidObjectException("Deserialization via serialization delegate");
	}

	void writeExternal(DataOutput out) throws IOException {
	date.writeExternal(out);
	time.writeExternal(out);
	}

	static LocalDateTime readExternal(DataInput in) throws IOException {
	LocalDate date = LocalDate.readExternal(in);
	LocalTime time = LocalTime.readExternal(in);
	return LocalDateTime.of(date, time);
	}

	}

Back to index...