Automatic sources dropoff on 2020-06-10 18:32:38.095721
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Change-Id: I24cbf6ba6db262a1ae1445db1427a08fee35b3b4
diff --git a/java/time/LocalTime.java b/java/time/LocalTime.java
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+/*
+ * 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.temporal.ChronoField.HOUR_OF_DAY;
+import static java.time.temporal.ChronoField.MICRO_OF_DAY;
+import static java.time.temporal.ChronoField.MINUTE_OF_HOUR;
+import static java.time.temporal.ChronoField.NANO_OF_DAY;
+import static java.time.temporal.ChronoField.NANO_OF_SECOND;
+import static java.time.temporal.ChronoField.SECOND_OF_DAY;
+import static java.time.temporal.ChronoField.SECOND_OF_MINUTE;
+import static java.time.temporal.ChronoUnit.NANOS;
+
+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.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.util.Objects;
+
+// Android-changed: removed ValueBased paragraph.
+/**
+ * A time without a time-zone in the ISO-8601 calendar system,
+ * such as {@code 10:15:30}.
+ * <p>
+ * {@code LocalTime} is an immutable date-time object that represents a time,
+ * often viewed as hour-minute-second.
+ * Time is represented to nanosecond precision.
+ * For example, the value "13:45.30.123456789" can be stored in a {@code LocalTime}.
+ * <p>
+ * This class does not store or represent a date or time-zone.
+ * Instead, it is a description of 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. This API assumes that all calendar systems use the same
+ * representation, this class, for time-of-day.
+ *
+ * @implSpec
+ * This class is immutable and thread-safe.
+ *
+ * @since 1.8
+ */
+public final class LocalTime
+ implements Temporal, TemporalAdjuster, Comparable<LocalTime>, Serializable {
+
+ /**
+ * The minimum supported {@code LocalTime}, '00:00'.
+ * This is the time of midnight at the start of the day.
+ */
+ public static final LocalTime MIN;
+ /**
+ * The maximum supported {@code LocalTime}, '23:59:59.999999999'.
+ * This is the time just before midnight at the end of the day.
+ */
+ public static final LocalTime MAX;
+ /**
+ * The time of midnight at the start of the day, '00:00'.
+ */
+ public static final LocalTime MIDNIGHT;
+ /**
+ * The time of noon in the middle of the day, '12:00'.
+ */
+ public static final LocalTime NOON;
+ /**
+ * Constants for the local time of each hour.
+ */
+ private static final LocalTime[] HOURS = new LocalTime[24];
+ static {
+ for (int i = 0; i < HOURS.length; i++) {
+ HOURS[i] = new LocalTime(i, 0, 0, 0);
+ }
+ MIDNIGHT = HOURS[0];
+ NOON = HOURS[12];
+ MIN = HOURS[0];
+ MAX = new LocalTime(23, 59, 59, 999_999_999);
+ }
+
+ /**
+ * Hours per day.
+ */
+ static final int HOURS_PER_DAY = 24;
+ /**
+ * Minutes per hour.
+ */
+ static final int MINUTES_PER_HOUR = 60;
+ /**
+ * Minutes per day.
+ */
+ static final int MINUTES_PER_DAY = MINUTES_PER_HOUR * HOURS_PER_DAY;
+ /**
+ * Seconds per minute.
+ */
+ static final int SECONDS_PER_MINUTE = 60;
+ /**
+ * Seconds per hour.
+ */
+ static final int SECONDS_PER_HOUR = SECONDS_PER_MINUTE * MINUTES_PER_HOUR;
+ /**
+ * Seconds per day.
+ */
+ static final int SECONDS_PER_DAY = SECONDS_PER_HOUR * HOURS_PER_DAY;
+ /**
+ * Milliseconds per day.
+ */
+ static final long MILLIS_PER_DAY = SECONDS_PER_DAY * 1000L;
+ /**
+ * Microseconds per day.
+ */
+ static final long MICROS_PER_DAY = SECONDS_PER_DAY * 1000_000L;
+ /**
+ * Nanos per second.
+ */
+ static final long NANOS_PER_SECOND = 1000_000_000L;
+ /**
+ * Nanos per minute.
+ */
+ static final long NANOS_PER_MINUTE = NANOS_PER_SECOND * SECONDS_PER_MINUTE;
+ /**
+ * Nanos per hour.
+ */
+ static final long NANOS_PER_HOUR = NANOS_PER_MINUTE * MINUTES_PER_HOUR;
+ /**
+ * Nanos per day.
+ */
+ static final long NANOS_PER_DAY = NANOS_PER_HOUR * HOURS_PER_DAY;
+
+ /**
+ * Serialization version.
+ */
+ private static final long serialVersionUID = 6414437269572265201L;
+
+ /**
+ * The hour.
+ */
+ private final byte hour;
+ /**
+ * The minute.
+ */
+ private final byte minute;
+ /**
+ * The second.
+ */
+ private final byte second;
+ /**
+ * The nanosecond.
+ */
+ private final int nano;
+
+ //-----------------------------------------------------------------------
+ /**
+ * Obtains the current 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 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 time using the system clock and default time-zone, not null
+ */
+ public static LocalTime now() {
+ return now(Clock.systemDefaultZone());
+ }
+
+ /**
+ * Obtains the current 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 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 time using the system clock, not null
+ */
+ public static LocalTime now(ZoneId zone) {
+ return now(Clock.system(zone));
+ }
+
+ /**
+ * Obtains the current time from the specified clock.
+ * <p>
+ * This will query the specified clock to obtain the current 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 time, not null
+ */
+ public static LocalTime now(Clock clock) {
+ Objects.requireNonNull(clock, "clock");
+ // inline OffsetTime factory to avoid creating object and InstantProvider checks
+ final Instant now = clock.instant(); // called once
+ ZoneOffset offset = clock.getZone().getRules().getOffset(now);
+ long localSecond = now.getEpochSecond() + offset.getTotalSeconds(); // overflow caught later
+ int secsOfDay = (int) Math.floorMod(localSecond, SECONDS_PER_DAY);
+ return ofNanoOfDay(secsOfDay * NANOS_PER_SECOND + now.getNano());
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Obtains an instance of {@code LocalTime} from an hour and minute.
+ * <p>
+ * This returns a {@code LocalTime} with the specified hour and minute.
+ * The second and nanosecond fields will be set to zero.
+ *
+ * @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 time, not null
+ * @throws DateTimeException if the value of any field is out of range
+ */
+ public static LocalTime of(int hour, int minute) {
+ HOUR_OF_DAY.checkValidValue(hour);
+ if (minute == 0) {
+ return HOURS[hour]; // for performance
+ }
+ MINUTE_OF_HOUR.checkValidValue(minute);
+ return new LocalTime(hour, minute, 0, 0);
+ }
+
+ /**
+ * Obtains an instance of {@code LocalTime} from an hour, minute and second.
+ * <p>
+ * This returns a {@code LocalTime} with the specified hour, minute and second.
+ * The nanosecond field will be set to zero.
+ *
+ * @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 time, not null
+ * @throws DateTimeException if the value of any field is out of range
+ */
+ public static LocalTime of(int hour, int minute, int second) {
+ HOUR_OF_DAY.checkValidValue(hour);
+ if ((minute | second) == 0) {
+ return HOURS[hour]; // for performance
+ }
+ MINUTE_OF_HOUR.checkValidValue(minute);
+ SECOND_OF_MINUTE.checkValidValue(second);
+ return new LocalTime(hour, minute, second, 0);
+ }
+
+ /**
+ * Obtains an instance of {@code LocalTime} from an hour, minute, second and nanosecond.
+ * <p>
+ * This returns a {@code LocalTime} with the specified hour, minute, second and nanosecond.
+ *
+ * @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 time, not null
+ * @throws DateTimeException if the value of any field is out of range
+ */
+ public static LocalTime of(int hour, int minute, int second, int nanoOfSecond) {
+ HOUR_OF_DAY.checkValidValue(hour);
+ MINUTE_OF_HOUR.checkValidValue(minute);
+ SECOND_OF_MINUTE.checkValidValue(second);
+ NANO_OF_SECOND.checkValidValue(nanoOfSecond);
+ return create(hour, minute, second, nanoOfSecond);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Obtains an instance of {@code LocalTime} from a second-of-day value.
+ * <p>
+ * This returns a {@code LocalTime} with the specified second-of-day.
+ * The nanosecond field will be set to zero.
+ *
+ * @param secondOfDay the second-of-day, from {@code 0} to {@code 24 * 60 * 60 - 1}
+ * @return the local time, not null
+ * @throws DateTimeException if the second-of-day value is invalid
+ */
+ public static LocalTime ofSecondOfDay(long secondOfDay) {
+ SECOND_OF_DAY.checkValidValue(secondOfDay);
+ int hours = (int) (secondOfDay / SECONDS_PER_HOUR);
+ secondOfDay -= hours * SECONDS_PER_HOUR;
+ int minutes = (int) (secondOfDay / SECONDS_PER_MINUTE);
+ secondOfDay -= minutes * SECONDS_PER_MINUTE;
+ return create(hours, minutes, (int) secondOfDay, 0);
+ }
+
+ /**
+ * Obtains an instance of {@code LocalTime} from a nanos-of-day value.
+ * <p>
+ * This returns a {@code LocalTime} with the specified nanosecond-of-day.
+ *
+ * @param nanoOfDay the nano of day, from {@code 0} to {@code 24 * 60 * 60 * 1,000,000,000 - 1}
+ * @return the local time, not null
+ * @throws DateTimeException if the nanos of day value is invalid
+ */
+ public static LocalTime ofNanoOfDay(long nanoOfDay) {
+ NANO_OF_DAY.checkValidValue(nanoOfDay);
+ int hours = (int) (nanoOfDay / NANOS_PER_HOUR);
+ nanoOfDay -= hours * NANOS_PER_HOUR;
+ int minutes = (int) (nanoOfDay / NANOS_PER_MINUTE);
+ nanoOfDay -= minutes * NANOS_PER_MINUTE;
+ int seconds = (int) (nanoOfDay / NANOS_PER_SECOND);
+ nanoOfDay -= seconds * NANOS_PER_SECOND;
+ return create(hours, minutes, seconds, (int) nanoOfDay);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Obtains an instance of {@code LocalTime} from a temporal object.
+ * <p>
+ * This obtains a local 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 LocalTime}.
+ * <p>
+ * The conversion uses the {@link TemporalQueries#localTime()} query, which relies
+ * on extracting the {@link ChronoField#NANO_OF_DAY NANO_OF_DAY} field.
+ * <p>
+ * This method matches the signature of the functional interface {@link TemporalQuery}
+ * allowing it to be used as a query via method reference, {@code LocalTime::from}.
+ *
+ * @param temporal the temporal object to convert, not null
+ * @return the local time, not null
+ * @throws DateTimeException if unable to convert to a {@code LocalTime}
+ */
+ public static LocalTime from(TemporalAccessor temporal) {
+ Objects.requireNonNull(temporal, "temporal");
+ LocalTime time = temporal.query(TemporalQueries.localTime());
+ if (time == null) {
+ throw new DateTimeException("Unable to obtain LocalTime from TemporalAccessor: " +
+ temporal + " of type " + temporal.getClass().getName());
+ }
+ return time;
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Obtains an instance of {@code LocalTime} from a text string such as {@code 10:15}.
+ * <p>
+ * The string must represent a valid time and is parsed using
+ * {@link java.time.format.DateTimeFormatter#ISO_LOCAL_TIME}.
+ *
+ * @param text the text to parse such as "10:15:30", not null
+ * @return the parsed local time, not null
+ * @throws DateTimeParseException if the text cannot be parsed
+ */
+ public static LocalTime parse(CharSequence text) {
+ return parse(text, DateTimeFormatter.ISO_LOCAL_TIME);
+ }
+
+ /**
+ * Obtains an instance of {@code LocalTime} from a text string using a specific formatter.
+ * <p>
+ * The text is parsed using the formatter, returning a time.
+ *
+ * @param text the text to parse, not null
+ * @param formatter the formatter to use, not null
+ * @return the parsed local time, not null
+ * @throws DateTimeParseException if the text cannot be parsed
+ */
+ public static LocalTime parse(CharSequence text, DateTimeFormatter formatter) {
+ Objects.requireNonNull(formatter, "formatter");
+ return formatter.parse(text, LocalTime::from);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Creates a local time from the hour, minute, second and nanosecond fields.
+ * <p>
+ * This factory may return a cached value, but applications must not rely on this.
+ *
+ * @param hour the hour-of-day to represent, validated from 0 to 23
+ * @param minute the minute-of-hour to represent, validated from 0 to 59
+ * @param second the second-of-minute to represent, validated from 0 to 59
+ * @param nanoOfSecond the nano-of-second to represent, validated from 0 to 999,999,999
+ * @return the local time, not null
+ */
+ private static LocalTime create(int hour, int minute, int second, int nanoOfSecond) {
+ if ((minute | second | nanoOfSecond) == 0) {
+ return HOURS[hour];
+ }
+ return new LocalTime(hour, minute, second, nanoOfSecond);
+ }
+
+ /**
+ * Constructor, previously validated.
+ *
+ * @param hour the hour-of-day to represent, validated from 0 to 23
+ * @param minute the minute-of-hour to represent, validated from 0 to 59
+ * @param second the second-of-minute to represent, validated from 0 to 59
+ * @param nanoOfSecond the nano-of-second to represent, validated from 0 to 999,999,999
+ */
+ private LocalTime(int hour, int minute, int second, int nanoOfSecond) {
+ this.hour = (byte) hour;
+ this.minute = (byte) minute;
+ this.second = (byte) second;
+ this.nano = nanoOfSecond;
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Checks if the specified field is supported.
+ * <p>
+ * This checks if this 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}
+ * </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 time, false if not
+ */
+ @Override
+ public boolean isSupported(TemporalField field) {
+ if (field instanceof ChronoField) {
+ return field.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 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}
+ * </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) {
+ if (unit instanceof ChronoUnit) {
+ return unit.isTimeBased();
+ }
+ return unit != null && unit.isSupportedBy(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 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 // override for Javadoc
+ public ValueRange range(TemporalField field) {
+ return Temporal.super.range(field);
+ }
+
+ /**
+ * Gets the value of the specified field from this time as an {@code int}.
+ * <p>
+ * This queries this 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 time, except {@code NANO_OF_DAY} and {@code MICRO_OF_DAY}
+ * 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 // override for Javadoc and performance
+ public int get(TemporalField field) {
+ if (field instanceof ChronoField) {
+ return get0(field);
+ }
+ return Temporal.super.get(field);
+ }
+
+ /**
+ * Gets the value of the specified field from this time as a {@code long}.
+ * <p>
+ * This queries this 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 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) {
+ if (field == NANO_OF_DAY) {
+ return toNanoOfDay();
+ }
+ if (field == MICRO_OF_DAY) {
+ return toNanoOfDay() / 1000;
+ }
+ return get0(field);
+ }
+ return field.getFrom(this);
+ }
+
+ private int get0(TemporalField field) {
+ switch ((ChronoField) field) {
+ case NANO_OF_SECOND: return nano;
+ case NANO_OF_DAY: throw new UnsupportedTemporalTypeException("Invalid field 'NanoOfDay' for get() method, use getLong() instead");
+ case MICRO_OF_SECOND: return nano / 1000;
+ case MICRO_OF_DAY: throw new UnsupportedTemporalTypeException("Invalid field 'MicroOfDay' for get() method, use getLong() instead");
+ case MILLI_OF_SECOND: return nano / 1000_000;
+ case MILLI_OF_DAY: return (int) (toNanoOfDay() / 1000_000);
+ case SECOND_OF_MINUTE: return second;
+ case SECOND_OF_DAY: return toSecondOfDay();
+ case MINUTE_OF_HOUR: return minute;
+ case MINUTE_OF_DAY: return hour * 60 + minute;
+ case HOUR_OF_AMPM: return hour % 12;
+ case CLOCK_HOUR_OF_AMPM: int ham = hour % 12; return (ham % 12 == 0 ? 12 : ham);
+ case HOUR_OF_DAY: return hour;
+ case CLOCK_HOUR_OF_DAY: return (hour == 0 ? 24 : hour);
+ case AMPM_OF_DAY: return hour / 12;
+ }
+ throw new UnsupportedTemporalTypeException("Unsupported field: " + field);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Gets the hour-of-day field.
+ *
+ * @return the hour-of-day, from 0 to 23
+ */
+ public int getHour() {
+ return hour;
+ }
+
+ /**
+ * Gets the minute-of-hour field.
+ *
+ * @return the minute-of-hour, from 0 to 59
+ */
+ public int getMinute() {
+ return minute;
+ }
+
+ /**
+ * Gets the second-of-minute field.
+ *
+ * @return the second-of-minute, from 0 to 59
+ */
+ public int getSecond() {
+ return second;
+ }
+
+ /**
+ * Gets the nano-of-second field.
+ *
+ * @return the nano-of-second, from 0 to 999,999,999
+ */
+ public int getNano() {
+ return nano;
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Returns an adjusted copy of this time.
+ * <p>
+ * This returns a {@code LocalTime}, based on this one, with the 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 hour field.
+ * A more complex adjuster might set the time to the last hour of the day.
+ * <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 LocalTime} 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 LocalTime with(TemporalAdjuster adjuster) {
+ // optimizations
+ if (adjuster instanceof LocalTime) {
+ return (LocalTime) adjuster;
+ }
+ return (LocalTime) adjuster.adjustInto(this);
+ }
+
+ /**
+ * Returns a copy of this time with the specified field set to a new value.
+ * <p>
+ * This returns a {@code LocalTime}, based on this one, with the value
+ * for the specified field changed.
+ * This can be used to change any supported field, such as the hour, minute or second.
+ * 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>
+ * If the field is a {@link ChronoField} then the adjustment is implemented here.
+ * The supported fields behave as follows:
+ * <ul>
+ * <li>{@code NANO_OF_SECOND} -
+ * Returns a {@code LocalTime} with the specified nano-of-second.
+ * The hour, minute and second will be unchanged.
+ * <li>{@code NANO_OF_DAY} -
+ * Returns a {@code LocalTime} with the specified nano-of-day.
+ * This completely replaces the time and is equivalent to {@link #ofNanoOfDay(long)}.
+ * <li>{@code MICRO_OF_SECOND} -
+ * Returns a {@code LocalTime} with the nano-of-second replaced by the specified
+ * micro-of-second multiplied by 1,000.
+ * The hour, minute and second will be unchanged.
+ * <li>{@code MICRO_OF_DAY} -
+ * Returns a {@code LocalTime} with the specified micro-of-day.
+ * This completely replaces the time and is equivalent to using {@link #ofNanoOfDay(long)}
+ * with the micro-of-day multiplied by 1,000.
+ * <li>{@code MILLI_OF_SECOND} -
+ * Returns a {@code LocalTime} with the nano-of-second replaced by the specified
+ * milli-of-second multiplied by 1,000,000.
+ * The hour, minute and second will be unchanged.
+ * <li>{@code MILLI_OF_DAY} -
+ * Returns a {@code LocalTime} with the specified milli-of-day.
+ * This completely replaces the time and is equivalent to using {@link #ofNanoOfDay(long)}
+ * with the milli-of-day multiplied by 1,000,000.
+ * <li>{@code SECOND_OF_MINUTE} -
+ * Returns a {@code LocalTime} with the specified second-of-minute.
+ * The hour, minute and nano-of-second will be unchanged.
+ * <li>{@code SECOND_OF_DAY} -
+ * Returns a {@code LocalTime} with the specified second-of-day.
+ * The nano-of-second will be unchanged.
+ * <li>{@code MINUTE_OF_HOUR} -
+ * Returns a {@code LocalTime} with the specified minute-of-hour.
+ * The hour, second-of-minute and nano-of-second will be unchanged.
+ * <li>{@code MINUTE_OF_DAY} -
+ * Returns a {@code LocalTime} with the specified minute-of-day.
+ * The second-of-minute and nano-of-second will be unchanged.
+ * <li>{@code HOUR_OF_AMPM} -
+ * Returns a {@code LocalTime} with the specified hour-of-am-pm.
+ * The AM/PM, minute-of-hour, second-of-minute and nano-of-second will be unchanged.
+ * <li>{@code CLOCK_HOUR_OF_AMPM} -
+ * Returns a {@code LocalTime} with the specified clock-hour-of-am-pm.
+ * The AM/PM, minute-of-hour, second-of-minute and nano-of-second will be unchanged.
+ * <li>{@code HOUR_OF_DAY} -
+ * Returns a {@code LocalTime} with the specified hour-of-day.
+ * The minute-of-hour, second-of-minute and nano-of-second will be unchanged.
+ * <li>{@code CLOCK_HOUR_OF_DAY} -
+ * Returns a {@code LocalTime} with the specified clock-hour-of-day.
+ * The minute-of-hour, second-of-minute and nano-of-second will be unchanged.
+ * <li>{@code AMPM_OF_DAY} -
+ * Returns a {@code LocalTime} with the specified AM/PM.
+ * The hour-of-am-pm, minute-of-hour, second-of-minute and nano-of-second will be unchanged.
+ * </ul>
+ * <p>
+ * In all cases, if the new value is outside the valid range of values for the field
+ * then a {@code DateTimeException} will be thrown.
+ * <p>
+ * 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 LocalTime} 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 LocalTime with(TemporalField field, long newValue) {
+ if (field instanceof ChronoField) {
+ ChronoField f = (ChronoField) field;
+ f.checkValidValue(newValue);
+ switch (f) {
+ case NANO_OF_SECOND: return withNano((int) newValue);
+ case NANO_OF_DAY: return LocalTime.ofNanoOfDay(newValue);
+ case MICRO_OF_SECOND: return withNano((int) newValue * 1000);
+ case MICRO_OF_DAY: return LocalTime.ofNanoOfDay(newValue * 1000);
+ case MILLI_OF_SECOND: return withNano((int) newValue * 1000_000);
+ case MILLI_OF_DAY: return LocalTime.ofNanoOfDay(newValue * 1000_000);
+ case SECOND_OF_MINUTE: return withSecond((int) newValue);
+ case SECOND_OF_DAY: return plusSeconds(newValue - toSecondOfDay());
+ case MINUTE_OF_HOUR: return withMinute((int) newValue);
+ case MINUTE_OF_DAY: return plusMinutes(newValue - (hour * 60 + minute));
+ case HOUR_OF_AMPM: return plusHours(newValue - (hour % 12));
+ case CLOCK_HOUR_OF_AMPM: return plusHours((newValue == 12 ? 0 : newValue) - (hour % 12));
+ case HOUR_OF_DAY: return withHour((int) newValue);
+ case CLOCK_HOUR_OF_DAY: return withHour((int) (newValue == 24 ? 0 : newValue));
+ case AMPM_OF_DAY: return plusHours((newValue - (hour / 12)) * 12);
+ }
+ throw new UnsupportedTemporalTypeException("Unsupported field: " + field);
+ }
+ return field.adjustInto(this, newValue);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Returns a copy of this {@code LocalTime} 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 LocalTime} based on this time with the requested hour, not null
+ * @throws DateTimeException if the hour value is invalid
+ */
+ public LocalTime withHour(int hour) {
+ if (this.hour == hour) {
+ return this;
+ }
+ HOUR_OF_DAY.checkValidValue(hour);
+ return create(hour, minute, second, nano);
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} 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 LocalTime} based on this time with the requested minute, not null
+ * @throws DateTimeException if the minute value is invalid
+ */
+ public LocalTime withMinute(int minute) {
+ if (this.minute == minute) {
+ return this;
+ }
+ MINUTE_OF_HOUR.checkValidValue(minute);
+ return create(hour, minute, second, nano);
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} 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 LocalTime} based on this time with the requested second, not null
+ * @throws DateTimeException if the second value is invalid
+ */
+ public LocalTime withSecond(int second) {
+ if (this.second == second) {
+ return this;
+ }
+ SECOND_OF_MINUTE.checkValidValue(second);
+ return create(hour, minute, second, nano);
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} 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 LocalTime} based on this time with the requested nanosecond, not null
+ * @throws DateTimeException if the nanos value is invalid
+ */
+ public LocalTime withNano(int nanoOfSecond) {
+ if (this.nano == nanoOfSecond) {
+ return this;
+ }
+ NANO_OF_SECOND.checkValidValue(nanoOfSecond);
+ return create(hour, minute, second, nanoOfSecond);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Returns a copy of this {@code LocalTime} with the time truncated.
+ * <p>
+ * Truncation returns a copy of the original 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 LocalTime} based on this time with the time truncated, not null
+ * @throws DateTimeException if unable to truncate
+ * @throws UnsupportedTemporalTypeException if the unit is not supported
+ */
+ public LocalTime truncatedTo(TemporalUnit unit) {
+ if (unit == ChronoUnit.NANOS) {
+ return this;
+ }
+ Duration unitDur = unit.getDuration();
+ if (unitDur.getSeconds() > SECONDS_PER_DAY) {
+ throw new UnsupportedTemporalTypeException("Unit is too large to be used for truncation");
+ }
+ long dur = unitDur.toNanos();
+ if ((NANOS_PER_DAY % dur) != 0) {
+ throw new UnsupportedTemporalTypeException("Unit must divide into a standard day without remainder");
+ }
+ long nod = toNanoOfDay();
+ return ofNanoOfDay((nod / dur) * dur);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Returns a copy of this time with the specified amount added.
+ * <p>
+ * This returns a {@code LocalTime}, based on this one, with the specified amount added.
+ * The amount is typically {@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 LocalTime} based on this time with the addition made, not null
+ * @throws DateTimeException if the addition cannot be made
+ * @throws ArithmeticException if numeric overflow occurs
+ */
+ @Override
+ public LocalTime plus(TemporalAmount amountToAdd) {
+ return (LocalTime) amountToAdd.addTo(this);
+ }
+
+ /**
+ * Returns a copy of this time with the specified amount added.
+ * <p>
+ * This returns a {@code LocalTime}, 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.
+ * The supported fields behave as follows:
+ * <ul>
+ * <li>{@code NANOS} -
+ * Returns a {@code LocalTime} with the specified number of nanoseconds added.
+ * This is equivalent to {@link #plusNanos(long)}.
+ * <li>{@code MICROS} -
+ * Returns a {@code LocalTime} with the specified number of microseconds added.
+ * This is equivalent to {@link #plusNanos(long)} with the amount
+ * multiplied by 1,000.
+ * <li>{@code MILLIS} -
+ * Returns a {@code LocalTime} with the specified number of milliseconds added.
+ * This is equivalent to {@link #plusNanos(long)} with the amount
+ * multiplied by 1,000,000.
+ * <li>{@code SECONDS} -
+ * Returns a {@code LocalTime} with the specified number of seconds added.
+ * This is equivalent to {@link #plusSeconds(long)}.
+ * <li>{@code MINUTES} -
+ * Returns a {@code LocalTime} with the specified number of minutes added.
+ * This is equivalent to {@link #plusMinutes(long)}.
+ * <li>{@code HOURS} -
+ * Returns a {@code LocalTime} with the specified number of hours added.
+ * This is equivalent to {@link #plusHours(long)}.
+ * <li>{@code HALF_DAYS} -
+ * Returns a {@code LocalTime} with the specified number of half-days added.
+ * This is equivalent to {@link #plusHours(long)} with the amount
+ * multiplied by 12.
+ * </ul>
+ * <p>
+ * All other {@code ChronoUnit} instances will throw an {@code UnsupportedTemporalTypeException}.
+ * <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 LocalTime} based on this 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 LocalTime plus(long amountToAdd, TemporalUnit unit) {
+ if (unit instanceof ChronoUnit) {
+ switch ((ChronoUnit) unit) {
+ case NANOS: return plusNanos(amountToAdd);
+ case MICROS: return plusNanos((amountToAdd % MICROS_PER_DAY) * 1000);
+ case MILLIS: return 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 plusHours((amountToAdd % 2) * 12);
+ }
+ throw new UnsupportedTemporalTypeException("Unsupported unit: " + unit);
+ }
+ return unit.addTo(this, amountToAdd);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Returns a copy of this {@code LocalTime} with the specified number of hours added.
+ * <p>
+ * This adds the specified number of hours to this time, returning a new time.
+ * The calculation wraps around midnight.
+ * <p>
+ * This instance is immutable and unaffected by this method call.
+ *
+ * @param hoursToAdd the hours to add, may be negative
+ * @return a {@code LocalTime} based on this time with the hours added, not null
+ */
+ public LocalTime plusHours(long hoursToAdd) {
+ if (hoursToAdd == 0) {
+ return this;
+ }
+ int newHour = ((int) (hoursToAdd % HOURS_PER_DAY) + hour + HOURS_PER_DAY) % HOURS_PER_DAY;
+ return create(newHour, minute, second, nano);
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} with the specified number of minutes added.
+ * <p>
+ * This adds the specified number of minutes to this time, returning a new time.
+ * The calculation wraps around midnight.
+ * <p>
+ * This instance is immutable and unaffected by this method call.
+ *
+ * @param minutesToAdd the minutes to add, may be negative
+ * @return a {@code LocalTime} based on this time with the minutes added, not null
+ */
+ public LocalTime plusMinutes(long minutesToAdd) {
+ if (minutesToAdd == 0) {
+ return this;
+ }
+ int mofd = hour * MINUTES_PER_HOUR + minute;
+ int newMofd = ((int) (minutesToAdd % MINUTES_PER_DAY) + mofd + MINUTES_PER_DAY) % MINUTES_PER_DAY;
+ if (mofd == newMofd) {
+ return this;
+ }
+ int newHour = newMofd / MINUTES_PER_HOUR;
+ int newMinute = newMofd % MINUTES_PER_HOUR;
+ return create(newHour, newMinute, second, nano);
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} with the specified number of seconds added.
+ * <p>
+ * This adds the specified number of seconds to this time, returning a new time.
+ * The calculation wraps around midnight.
+ * <p>
+ * This instance is immutable and unaffected by this method call.
+ *
+ * @param secondstoAdd the seconds to add, may be negative
+ * @return a {@code LocalTime} based on this time with the seconds added, not null
+ */
+ public LocalTime plusSeconds(long secondstoAdd) {
+ if (secondstoAdd == 0) {
+ return this;
+ }
+ int sofd = hour * SECONDS_PER_HOUR +
+ minute * SECONDS_PER_MINUTE + second;
+ int newSofd = ((int) (secondstoAdd % SECONDS_PER_DAY) + sofd + SECONDS_PER_DAY) % SECONDS_PER_DAY;
+ if (sofd == newSofd) {
+ return this;
+ }
+ int newHour = newSofd / SECONDS_PER_HOUR;
+ int newMinute = (newSofd / SECONDS_PER_MINUTE) % MINUTES_PER_HOUR;
+ int newSecond = newSofd % SECONDS_PER_MINUTE;
+ return create(newHour, newMinute, newSecond, nano);
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} with the specified number of nanoseconds added.
+ * <p>
+ * This adds the specified number of nanoseconds to this time, returning a new time.
+ * The calculation wraps around midnight.
+ * <p>
+ * This instance is immutable and unaffected by this method call.
+ *
+ * @param nanosToAdd the nanos to add, may be negative
+ * @return a {@code LocalTime} based on this time with the nanoseconds added, not null
+ */
+ public LocalTime plusNanos(long nanosToAdd) {
+ if (nanosToAdd == 0) {
+ return this;
+ }
+ long nofd = toNanoOfDay();
+ long newNofd = ((nanosToAdd % NANOS_PER_DAY) + nofd + NANOS_PER_DAY) % NANOS_PER_DAY;
+ if (nofd == newNofd) {
+ return this;
+ }
+ int newHour = (int) (newNofd / NANOS_PER_HOUR);
+ int newMinute = (int) ((newNofd / NANOS_PER_MINUTE) % MINUTES_PER_HOUR);
+ int newSecond = (int) ((newNofd / NANOS_PER_SECOND) % SECONDS_PER_MINUTE);
+ int newNano = (int) (newNofd % NANOS_PER_SECOND);
+ return create(newHour, newMinute, newSecond, newNano);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Returns a copy of this time with the specified amount subtracted.
+ * <p>
+ * This returns a {@code LocalTime}, based on this one, with the specified amount subtracted.
+ * The amount is typically {@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 LocalTime} based on this time with the subtraction made, not null
+ * @throws DateTimeException if the subtraction cannot be made
+ * @throws ArithmeticException if numeric overflow occurs
+ */
+ @Override
+ public LocalTime minus(TemporalAmount amountToSubtract) {
+ return (LocalTime) amountToSubtract.subtractFrom(this);
+ }
+
+ /**
+ * Returns a copy of this time with the specified amount subtracted.
+ * <p>
+ * This returns a {@code LocalTime}, 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 LocalTime} based on this 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 LocalTime 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 LocalTime} with the specified number of hours subtracted.
+ * <p>
+ * This subtracts the specified number of hours from this time, returning a new time.
+ * The calculation wraps around midnight.
+ * <p>
+ * This instance is immutable and unaffected by this method call.
+ *
+ * @param hoursToSubtract the hours to subtract, may be negative
+ * @return a {@code LocalTime} based on this time with the hours subtracted, not null
+ */
+ public LocalTime minusHours(long hoursToSubtract) {
+ return plusHours(-(hoursToSubtract % HOURS_PER_DAY));
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} with the specified number of minutes subtracted.
+ * <p>
+ * This subtracts the specified number of minutes from this time, returning a new time.
+ * The calculation wraps around midnight.
+ * <p>
+ * This instance is immutable and unaffected by this method call.
+ *
+ * @param minutesToSubtract the minutes to subtract, may be negative
+ * @return a {@code LocalTime} based on this time with the minutes subtracted, not null
+ */
+ public LocalTime minusMinutes(long minutesToSubtract) {
+ return plusMinutes(-(minutesToSubtract % MINUTES_PER_DAY));
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} with the specified number of seconds subtracted.
+ * <p>
+ * This subtracts the specified number of seconds from this time, returning a new time.
+ * The calculation wraps around midnight.
+ * <p>
+ * This instance is immutable and unaffected by this method call.
+ *
+ * @param secondsToSubtract the seconds to subtract, may be negative
+ * @return a {@code LocalTime} based on this time with the seconds subtracted, not null
+ */
+ public LocalTime minusSeconds(long secondsToSubtract) {
+ return plusSeconds(-(secondsToSubtract % SECONDS_PER_DAY));
+ }
+
+ /**
+ * Returns a copy of this {@code LocalTime} with the specified number of nanoseconds subtracted.
+ * <p>
+ * This subtracts the specified number of nanoseconds from this time, returning a new time.
+ * The calculation wraps around midnight.
+ * <p>
+ * This instance is immutable and unaffected by this method call.
+ *
+ * @param nanosToSubtract the nanos to subtract, may be negative
+ * @return a {@code LocalTime} based on this time with the nanoseconds subtracted, not null
+ */
+ public LocalTime minusNanos(long nanosToSubtract) {
+ return plusNanos(-(nanosToSubtract % NANOS_PER_DAY));
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Queries this time using the specified query.
+ * <p>
+ * This queries this 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
+ public <R> R query(TemporalQuery<R> query) {
+ if (query == TemporalQueries.chronology() || query == TemporalQueries.zoneId() ||
+ query == TemporalQueries.zone() || query == TemporalQueries.offset()) {
+ return null;
+ } else if (query == TemporalQueries.localTime()) {
+ return (R) this;
+ } else if (query == TemporalQueries.localDate()) {
+ return null;
+ } else if (query == TemporalQueries.precision()) {
+ return (R) NANOS;
+ }
+ // inline TemporalAccessor.super.query(query) as an optimization
+ // non-JDK classes are not permitted to make this optimization
+ return query.queryFrom(this);
+ }
+
+ /**
+ * Adjusts the specified temporal object to have the same time as this object.
+ * <p>
+ * This returns a temporal object of the same observable type as the input
+ * with the time changed to be the same as this.
+ * <p>
+ * The adjustment is equivalent to using {@link Temporal#with(TemporalField, long)}
+ * passing {@link ChronoField#NANO_OF_DAY} as the field.
+ * <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 = thisLocalTime.adjustInto(temporal);
+ * temporal = temporal.with(thisLocalTime);
+ * </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) {
+ return temporal.with(NANO_OF_DAY, toNanoOfDay());
+ }
+
+ /**
+ * Calculates the amount of time until another time in terms of the specified unit.
+ * <p>
+ * This calculates the amount of time between two {@code LocalTime}
+ * objects in terms of a single {@code TemporalUnit}.
+ * The start and end points are {@code this} and the specified 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 LocalTime} using {@link #from(TemporalAccessor)}.
+ * For example, the amount in hours between two times can be calculated
+ * using {@code startTime.until(endTime, HOURS)}.
+ * <p>
+ * The calculation returns a whole number, representing the number of
+ * complete units between the two times.
+ * For example, the amount in hours between 11:30 and 13:29 will only
+ * be one hour as it is one minute short of two hours.
+ * <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, MINUTES);
+ * amount = MINUTES.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} 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 time, exclusive, which is converted to a {@code LocalTime}, not null
+ * @param unit the unit to measure the amount in, not null
+ * @return the amount of time between this time and the end time
+ * @throws DateTimeException if the amount cannot be calculated, or the end
+ * temporal cannot be converted to a {@code LocalTime}
+ * @throws UnsupportedTemporalTypeException if the unit is not supported
+ * @throws ArithmeticException if numeric overflow occurs
+ */
+ @Override
+ public long until(Temporal endExclusive, TemporalUnit unit) {
+ LocalTime end = LocalTime.from(endExclusive);
+ if (unit instanceof ChronoUnit) {
+ long nanosUntil = end.toNanoOfDay() - toNanoOfDay(); // no overflow
+ switch ((ChronoUnit) unit) {
+ case NANOS: return nanosUntil;
+ case MICROS: return nanosUntil / 1000;
+ case MILLIS: return nanosUntil / 1000_000;
+ case SECONDS: return nanosUntil / NANOS_PER_SECOND;
+ case MINUTES: return nanosUntil / NANOS_PER_MINUTE;
+ case HOURS: return nanosUntil / NANOS_PER_HOUR;
+ case HALF_DAYS: return nanosUntil / (12 * NANOS_PER_HOUR);
+ }
+ throw new UnsupportedTemporalTypeException("Unsupported unit: " + unit);
+ }
+ return unit.between(this, end);
+ }
+
+ /**
+ * Formats this time using the specified formatter.
+ * <p>
+ * This time will be passed to the formatter to produce a string.
+ *
+ * @param formatter the formatter to use, not null
+ * @return the formatted time string, not null
+ * @throws DateTimeException if an error occurs during printing
+ */
+ public String format(DateTimeFormatter formatter) {
+ Objects.requireNonNull(formatter, "formatter");
+ return formatter.format(this);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Combines this time with a date to create a {@code LocalDateTime}.
+ * <p>
+ * This returns a {@code LocalDateTime} formed from this time at the specified date.
+ * All possible combinations of date and time are valid.
+ *
+ * @param date the date to combine with, not null
+ * @return the local date-time formed from this time and the specified date, not null
+ */
+ public LocalDateTime atDate(LocalDate date) {
+ return LocalDateTime.of(date, this);
+ }
+
+ /**
+ * Combines this time with an offset to create an {@code OffsetTime}.
+ * <p>
+ * This returns an {@code OffsetTime} formed from this time at the specified offset.
+ * All possible combinations of time and offset are valid.
+ *
+ * @param offset the offset to combine with, not null
+ * @return the offset time formed from this time and the specified offset, not null
+ */
+ public OffsetTime atOffset(ZoneOffset offset) {
+ return OffsetTime.of(this, offset);
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Extracts the time as seconds of day,
+ * from {@code 0} to {@code 24 * 60 * 60 - 1}.
+ *
+ * @return the second-of-day equivalent to this time
+ */
+ public int toSecondOfDay() {
+ int total = hour * SECONDS_PER_HOUR;
+ total += minute * SECONDS_PER_MINUTE;
+ total += second;
+ return total;
+ }
+
+ /**
+ * Extracts the time as nanos of day,
+ * from {@code 0} to {@code 24 * 60 * 60 * 1,000,000,000 - 1}.
+ *
+ * @return the nano of day equivalent to this time
+ */
+ public long toNanoOfDay() {
+ long total = hour * NANOS_PER_HOUR;
+ total += minute * NANOS_PER_MINUTE;
+ total += second * NANOS_PER_SECOND;
+ total += nano;
+ return total;
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Compares this time to another time.
+ * <p>
+ * The comparison is based on the time-line position of the local times within a day.
+ * It is "consistent with equals", as defined by {@link Comparable}.
+ *
+ * @param other the other time to compare to, not null
+ * @return the comparator value, negative if less, positive if greater
+ * @throws NullPointerException if {@code other} is null
+ */
+ @Override
+ public int compareTo(LocalTime other) {
+ int cmp = Integer.compare(hour, other.hour);
+ if (cmp == 0) {
+ cmp = Integer.compare(minute, other.minute);
+ if (cmp == 0) {
+ cmp = Integer.compare(second, other.second);
+ if (cmp == 0) {
+ cmp = Integer.compare(nano, other.nano);
+ }
+ }
+ }
+ return cmp;
+ }
+
+ /**
+ * Checks if this time is after the specified time.
+ * <p>
+ * The comparison is based on the time-line position of the time within a day.
+ *
+ * @param other the other time to compare to, not null
+ * @return true if this is after the specified time
+ * @throws NullPointerException if {@code other} is null
+ */
+ public boolean isAfter(LocalTime other) {
+ return compareTo(other) > 0;
+ }
+
+ /**
+ * Checks if this time is before the specified time.
+ * <p>
+ * The comparison is based on the time-line position of the time within a day.
+ *
+ * @param other the other time to compare to, not null
+ * @return true if this point is before the specified time
+ * @throws NullPointerException if {@code other} is null
+ */
+ public boolean isBefore(LocalTime other) {
+ return compareTo(other) < 0;
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Checks if this time is equal to another time.
+ * <p>
+ * The comparison is based on the time-line position of the time within a day.
+ * <p>
+ * Only objects of type {@code LocalTime} are compared, other types return false.
+ * To compare the date of two {@code TemporalAccessor} instances, use
+ * {@link ChronoField#NANO_OF_DAY} as a comparator.
+ *
+ * @param obj the object to check, null returns false
+ * @return true if this is equal to the other time
+ */
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+ if (obj instanceof LocalTime) {
+ LocalTime other = (LocalTime) obj;
+ return hour == other.hour && minute == other.minute &&
+ second == other.second && nano == other.nano;
+ }
+ return false;
+ }
+
+ /**
+ * A hash code for this time.
+ *
+ * @return a suitable hash code
+ */
+ @Override
+ public int hashCode() {
+ long nod = toNanoOfDay();
+ return (int) (nod ^ (nod >>> 32));
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Outputs this time as a {@code String}, such as {@code 10:15}.
+ * <p>
+ * The output will be one of the following ISO-8601 formats:
+ * <ul>
+ * <li>{@code HH:mm}</li>
+ * <li>{@code HH:mm:ss}</li>
+ * <li>{@code HH:mm:ss.SSS}</li>
+ * <li>{@code HH:mm:ss.SSSSSS}</li>
+ * <li>{@code 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 time, not null
+ */
+ @Override
+ public String toString() {
+ StringBuilder buf = new StringBuilder(18);
+ int hourValue = hour;
+ int minuteValue = minute;
+ int secondValue = second;
+ int nanoValue = nano;
+ buf.append(hourValue < 10 ? "0" : "").append(hourValue)
+ .append(minuteValue < 10 ? ":0" : ":").append(minuteValue);
+ if (secondValue > 0 || nanoValue > 0) {
+ buf.append(secondValue < 10 ? ":0" : ":").append(secondValue);
+ if (nanoValue > 0) {
+ buf.append('.');
+ if (nanoValue % 1000_000 == 0) {
+ buf.append(Integer.toString((nanoValue / 1000_000) + 1000).substring(1));
+ } else if (nanoValue % 1000 == 0) {
+ buf.append(Integer.toString((nanoValue / 1000) + 1000_000).substring(1));
+ } else {
+ buf.append(Integer.toString((nanoValue) + 1000_000_000).substring(1));
+ }
+ }
+ }
+ return buf.toString();
+ }
+
+ //-----------------------------------------------------------------------
+ /**
+ * Writes the object using a
+ * <a href="../../serialized-form.html#java.time.Ser">dedicated serialized form</a>.
+ * @serialData
+ * A twos-complement value indicates the remaining values are not in the stream
+ * and should be set to zero.
+ * <pre>
+ * out.writeByte(4); // identifies a LocalTime
+ * if (nano == 0) {
+ * if (second == 0) {
+ * if (minute == 0) {
+ * out.writeByte(~hour);
+ * } else {
+ * out.writeByte(hour);
+ * out.writeByte(~minute);
+ * }
+ * } else {
+ * out.writeByte(hour);
+ * out.writeByte(minute);
+ * out.writeByte(~second);
+ * }
+ * } else {
+ * out.writeByte(hour);
+ * out.writeByte(minute);
+ * out.writeByte(second);
+ * out.writeInt(nano);
+ * }
+ * </pre>
+ *
+ * @return the instance of {@code Ser}, not null
+ */
+ private Object writeReplace() {
+ return new Ser(Ser.LOCAL_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 {
+ if (nano == 0) {
+ if (second == 0) {
+ if (minute == 0) {
+ out.writeByte(~hour);
+ } else {
+ out.writeByte(hour);
+ out.writeByte(~minute);
+ }
+ } else {
+ out.writeByte(hour);
+ out.writeByte(minute);
+ out.writeByte(~second);
+ }
+ } else {
+ out.writeByte(hour);
+ out.writeByte(minute);
+ out.writeByte(second);
+ out.writeInt(nano);
+ }
+ }
+
+ static LocalTime readExternal(DataInput in) throws IOException {
+ int hour = in.readByte();
+ int minute = 0;
+ int second = 0;
+ int nano = 0;
+ if (hour < 0) {
+ hour = ~hour;
+ } else {
+ minute = in.readByte();
+ if (minute < 0) {
+ minute = ~minute;
+ } else {
+ second = in.readByte();
+ if (second < 0) {
+ second = ~second;
+ } else {
+ nano = in.readInt();
+ }
+ }
+ }
+ return LocalTime.of(hour, minute, second, nano);
+ }
+
+}
