1 /*
2 * Copyright (c) 2012, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /*
27 * This file is available under and governed by the GNU General Public
28 * License version 2 only, as published by the Free Software Foundation.
29 * However, the following notice accompanied the original version of this
30 * file:
31 *
32 * Copyright (c) 2007-2012, Stephen Colebourne & Michael Nascimento Santos
33 *
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions are met:
38 *
39 * * Redistributions of source code must retain the above copyright notice,
40 * this list of conditions and the following disclaimer.
41 *
42 * * Redistributions in binary form must reproduce the above copyright notice,
43 * this list of conditions and the following disclaimer in the documentation
44 * and/or other materials provided with the distribution.
45 *
46 * * Neither the name of JSR-310 nor the names of its contributors
47 * may be used to endorse or promote products derived from this software
48 * without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
54 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
55 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
56 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
57 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
58 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
59 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
60 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 */
62 package java.time;
63
64 import static java.time.temporal.ChronoField.HOUR_OF_DAY;
65 import static java.time.temporal.ChronoField.MICRO_OF_DAY;
66 import static java.time.temporal.ChronoField.MINUTE_OF_HOUR;
67 import static java.time.temporal.ChronoField.NANO_OF_DAY;
68 import static java.time.temporal.ChronoField.NANO_OF_SECOND;
69 import static java.time.temporal.ChronoField.SECOND_OF_DAY;
70 import static java.time.temporal.ChronoField.SECOND_OF_MINUTE;
71 import static java.time.temporal.ChronoUnit.NANOS;
72
73 import java.io.DataInput;
74 import java.io.DataOutput;
75 import java.io.IOException;
76 import java.io.InvalidObjectException;
77 import java.io.ObjectInputStream;
78 import java.io.Serializable;
79 import java.time.format.DateTimeFormatter;
80 import java.time.format.DateTimeParseException;
81 import java.time.temporal.ChronoField;
82 import java.time.temporal.ChronoUnit;
83 import java.time.temporal.Temporal;
84 import java.time.temporal.TemporalAccessor;
85 import java.time.temporal.TemporalAdjuster;
86 import java.time.temporal.TemporalAmount;
87 import java.time.temporal.TemporalField;
88 import java.time.temporal.TemporalQueries;
89 import java.time.temporal.TemporalQuery;
90 import java.time.temporal.TemporalUnit;
91 import java.time.temporal.UnsupportedTemporalTypeException;
92 import java.time.temporal.ValueRange;
93 import java.util.Objects;
94
95 import jdk.internal.util.DecimalDigits;
96
97 /**
98 * A time without a time-zone in the ISO-8601 calendar system,
99 * such as {@code 10:15:30}.
100 * <p>
101 * {@code LocalTime} is an immutable date-time object that represents a time,
102 * often viewed as hour-minute-second.
103 * Time is represented to nanosecond precision.
104 * For example, the value "13:45.30.123456789" can be stored in a {@code LocalTime}.
105 * <p>
106 * This class does not store or represent a date or time-zone.
107 * Instead, it is a description of the local time as seen on a wall clock.
108 * It cannot represent an instant on the time-line without additional information
109 * such as an offset or time-zone.
110 * <p>
111 * The ISO-8601 calendar system is the modern civil calendar system used today
112 * in most of the world. This API assumes that all calendar systems use the same
113 * representation, this class, for time-of-day.
114 * <p>
115 * This is a <a href="{@docRoot}/java.base/java/lang/doc-files/ValueBased.html">value-based</a>
116 * class; programmers should treat instances that are
117 * {@linkplain #equals(Object) equal} as interchangeable and should not
118 * use instances for synchronization, or unpredictable behavior may
119 * occur. For example, in a future release, synchronization may fail.
120 * The {@code equals} method should be used for comparisons.
121 *
122 * @implSpec
123 * This class is immutable and thread-safe.
124 *
125 * @since 1.8
126 */
127 @jdk.internal.ValueBased
128 @jdk.internal.MigratedValueClass
129 public final class LocalTime
130 implements Temporal, TemporalAdjuster, Comparable<LocalTime>, Serializable {
131
132 /**
133 * The minimum supported {@code LocalTime}, '00:00'.
134 * This is the time of midnight at the start of the day.
135 */
136 public static final LocalTime MIN;
137 /**
138 * The maximum supported {@code LocalTime}, '23:59:59.999999999'.
139 * This is the time just before midnight at the end of the day.
140 */
141 public static final LocalTime MAX;
142 /**
143 * The time of midnight at the start of the day, '00:00'.
144 */
145 public static final LocalTime MIDNIGHT;
146 /**
147 * The time of noon in the middle of the day, '12:00'.
148 */
149 public static final LocalTime NOON;
150 /**
151 * Constants for the local time of each hour.
152 */
153 private static final LocalTime[] HOURS = new LocalTime[24];
154 static {
155 for (int i = 0; i < HOURS.length; i++) {
156 HOURS[i] = new LocalTime(i, 0, 0, 0);
157 }
158 MIDNIGHT = HOURS[0];
159 NOON = HOURS[12];
160 MIN = HOURS[0];
161 MAX = new LocalTime(23, 59, 59, 999_999_999);
162 }
163
164 /**
165 * Hours per day.
166 */
167 static final int HOURS_PER_DAY = 24;
168 /**
169 * Minutes per hour.
170 */
171 static final int MINUTES_PER_HOUR = 60;
172 /**
173 * Minutes per day.
174 */
175 static final int MINUTES_PER_DAY = MINUTES_PER_HOUR * HOURS_PER_DAY;
176 /**
177 * Seconds per minute.
178 */
179 static final int SECONDS_PER_MINUTE = 60;
180 /**
181 * Seconds per hour.
182 */
183 static final int SECONDS_PER_HOUR = SECONDS_PER_MINUTE * MINUTES_PER_HOUR;
184 /**
185 * Seconds per day.
186 */
187 static final int SECONDS_PER_DAY = SECONDS_PER_HOUR * HOURS_PER_DAY;
188 /**
189 * Milliseconds per second.
190 */
191 static final long MILLIS_PER_SECOND = 1000L;
192 /**
193 * Milliseconds per day.
194 */
195 static final long MILLIS_PER_DAY = MILLIS_PER_SECOND * SECONDS_PER_DAY;
196 /**
197 * Microseconds per second.
198 */
199 static final long MICROS_PER_SECOND = 1000_000L;
200 /**
201 * Microseconds per day.
202 */
203 static final long MICROS_PER_DAY = MICROS_PER_SECOND * SECONDS_PER_DAY;
204 /**
205 * Nanos per millisecond.
206 */
207 static final long NANOS_PER_MILLI = 1000_000L;
208 /**
209 * Nanos per second.
210 */
211 static final long NANOS_PER_SECOND = 1000_000_000L;
212 /**
213 * Nanos per minute.
214 */
215 static final long NANOS_PER_MINUTE = NANOS_PER_SECOND * SECONDS_PER_MINUTE;
216 /**
217 * Nanos per hour.
218 */
219 static final long NANOS_PER_HOUR = NANOS_PER_MINUTE * MINUTES_PER_HOUR;
220 /**
221 * Nanos per day.
222 */
223 static final long NANOS_PER_DAY = NANOS_PER_HOUR * HOURS_PER_DAY;
224
225 /**
226 * Serialization version.
227 */
228 @java.io.Serial
229 private static final long serialVersionUID = 6414437269572265201L;
230
231 /**
232 * The hour.
233 */
234 private final byte hour;
235 /**
236 * The minute.
237 */
238 private final byte minute;
239 /**
240 * The second.
241 */
242 private final byte second;
243 /**
244 * The nanosecond.
245 */
246 private final int nano;
247
248 //-----------------------------------------------------------------------
249 /**
250 * Obtains the current time from the system clock in the default time-zone.
251 * <p>
252 * This will query the {@link Clock#systemDefaultZone() system clock} in the default
253 * time-zone to obtain the current time.
254 * <p>
255 * Using this method will prevent the ability to use an alternate clock for testing
256 * because the clock is hard-coded.
257 *
258 * @return the current time using the system clock and default time-zone, not null
259 */
260 public static LocalTime now() {
261 return now(Clock.systemDefaultZone());
262 }
263
264 /**
265 * Obtains the current time from the system clock in the specified time-zone.
266 * <p>
267 * This will query the {@link Clock#system(ZoneId) system clock} to obtain the current time.
268 * Specifying the time-zone avoids dependence on the default time-zone.
269 * <p>
270 * Using this method will prevent the ability to use an alternate clock for testing
271 * because the clock is hard-coded.
272 *
273 * @param zone the zone ID to use, not null
274 * @return the current time using the system clock, not null
275 */
276 public static LocalTime now(ZoneId zone) {
277 return now(Clock.system(zone));
278 }
279
280 /**
281 * Obtains the current time from the specified clock.
282 * <p>
283 * This will query the specified clock to obtain the current time.
284 * Using this method allows the use of an alternate clock for testing.
285 * The alternate clock may be introduced using {@link Clock dependency injection}.
286 *
287 * @param clock the clock to use, not null
288 * @return the current time, not null
289 */
290 public static LocalTime now(Clock clock) {
291 Objects.requireNonNull(clock, "clock");
292 final Instant now = clock.instant(); // called once
293 return ofInstant(now, clock.getZone());
294 }
295
296 //-----------------------------------------------------------------------
297 /**
298 * Obtains an instance of {@code LocalTime} from an hour and minute.
299 * <p>
300 * This returns a {@code LocalTime} with the specified hour and minute.
301 * The second and nanosecond fields will be set to zero.
302 *
303 * @param hour the hour-of-day to represent, from 0 to 23
304 * @param minute the minute-of-hour to represent, from 0 to 59
305 * @return the local time, not null
306 * @throws DateTimeException if the value of any field is out of range
307 */
308 public static LocalTime of(int hour, int minute) {
309 HOUR_OF_DAY.checkValidValue(hour);
310 if (minute == 0) {
311 return HOURS[hour]; // for performance
312 }
313 MINUTE_OF_HOUR.checkValidValue(minute);
314 return new LocalTime(hour, minute, 0, 0);
315 }
316
317 /**
318 * Obtains an instance of {@code LocalTime} from an hour, minute and second.
319 * <p>
320 * This returns a {@code LocalTime} with the specified hour, minute and second.
321 * The nanosecond field will be set to zero.
322 *
323 * @param hour the hour-of-day to represent, from 0 to 23
324 * @param minute the minute-of-hour to represent, from 0 to 59
325 * @param second the second-of-minute to represent, from 0 to 59
326 * @return the local time, not null
327 * @throws DateTimeException if the value of any field is out of range
328 */
329 public static LocalTime of(int hour, int minute, int second) {
330 HOUR_OF_DAY.checkValidValue(hour);
331 if ((minute | second) == 0) {
332 return HOURS[hour]; // for performance
333 }
334 MINUTE_OF_HOUR.checkValidValue(minute);
335 SECOND_OF_MINUTE.checkValidValue(second);
336 return new LocalTime(hour, minute, second, 0);
337 }
338
339 /**
340 * Obtains an instance of {@code LocalTime} from an hour, minute, second and nanosecond.
341 * <p>
342 * This returns a {@code LocalTime} with the specified hour, minute, second and nanosecond.
343 *
344 * @param hour the hour-of-day to represent, from 0 to 23
345 * @param minute the minute-of-hour to represent, from 0 to 59
346 * @param second the second-of-minute to represent, from 0 to 59
347 * @param nanoOfSecond the nano-of-second to represent, from 0 to 999,999,999
348 * @return the local time, not null
349 * @throws DateTimeException if the value of any field is out of range
350 */
351 public static LocalTime of(int hour, int minute, int second, int nanoOfSecond) {
352 HOUR_OF_DAY.checkValidValue(hour);
353 MINUTE_OF_HOUR.checkValidValue(minute);
354 SECOND_OF_MINUTE.checkValidValue(second);
355 NANO_OF_SECOND.checkValidValue(nanoOfSecond);
356 return create(hour, minute, second, nanoOfSecond);
357 }
358
359 /**
360 * Obtains an instance of {@code LocalTime} from an {@code Instant} and zone ID.
361 * <p>
362 * This creates a local time based on the specified instant.
363 * First, the offset from UTC/Greenwich is obtained using the zone ID and instant,
364 * which is simple as there is only one valid offset for each instant.
365 * Then, the instant and offset are used to calculate the local time.
366 *
367 * @param instant the instant to create the time from, not null
368 * @param zone the time-zone, which may be an offset, not null
369 * @return the local time, not null
370 * @since 9
371 */
372 public static LocalTime ofInstant(Instant instant, ZoneId zone) {
373 Objects.requireNonNull(instant, "instant");
374 Objects.requireNonNull(zone, "zone");
375 ZoneOffset offset = zone.getRules().getOffset(instant);
376 long localSecond = instant.getEpochSecond() + offset.getTotalSeconds();
377 int secsOfDay = Math.floorMod(localSecond, SECONDS_PER_DAY);
378 return ofNanoOfDay(secsOfDay * NANOS_PER_SECOND + instant.getNano());
379 }
380
381 //-----------------------------------------------------------------------
382 /**
383 * Obtains an instance of {@code LocalTime} from a second-of-day value.
384 * <p>
385 * This returns a {@code LocalTime} with the specified second-of-day.
386 * The nanosecond field will be set to zero.
387 *
388 * @param secondOfDay the second-of-day, from {@code 0} to {@code 24 * 60 * 60 - 1}
389 * @return the local time, not null
390 * @throws DateTimeException if the second-of-day value is invalid
391 */
392 public static LocalTime ofSecondOfDay(long secondOfDay) {
393 SECOND_OF_DAY.checkValidValue(secondOfDay);
394 int hours = (int) (secondOfDay / SECONDS_PER_HOUR);
395 secondOfDay -= hours * SECONDS_PER_HOUR;
396 int minutes = (int) (secondOfDay / SECONDS_PER_MINUTE);
397 secondOfDay -= minutes * SECONDS_PER_MINUTE;
398 return create(hours, minutes, (int) secondOfDay, 0);
399 }
400
401 /**
402 * Obtains an instance of {@code LocalTime} from a nanos-of-day value.
403 * <p>
404 * This returns a {@code LocalTime} with the specified nanosecond-of-day.
405 *
406 * @param nanoOfDay the nano of day, from {@code 0} to {@code 24 * 60 * 60 * 1,000,000,000 - 1}
407 * @return the local time, not null
408 * @throws DateTimeException if the nanos of day value is invalid
409 */
410 public static LocalTime ofNanoOfDay(long nanoOfDay) {
411 NANO_OF_DAY.checkValidValue(nanoOfDay);
412 int hours = (int) (nanoOfDay / NANOS_PER_HOUR);
413 nanoOfDay -= hours * NANOS_PER_HOUR;
414 int minutes = (int) (nanoOfDay / NANOS_PER_MINUTE);
415 nanoOfDay -= minutes * NANOS_PER_MINUTE;
416 int seconds = (int) (nanoOfDay / NANOS_PER_SECOND);
417 nanoOfDay -= seconds * NANOS_PER_SECOND;
418 return create(hours, minutes, seconds, (int) nanoOfDay);
419 }
420
421 //-----------------------------------------------------------------------
422 /**
423 * Obtains an instance of {@code LocalTime} from a temporal object.
424 * <p>
425 * This obtains a local time based on the specified temporal.
426 * A {@code TemporalAccessor} represents an arbitrary set of date and time information,
427 * which this factory converts to an instance of {@code LocalTime}.
428 * <p>
429 * The conversion uses the {@link TemporalQueries#localTime()} query, which relies
430 * on extracting the {@link ChronoField#NANO_OF_DAY NANO_OF_DAY} field.
431 * <p>
432 * This method matches the signature of the functional interface {@link TemporalQuery}
433 * allowing it to be used as a query via method reference, {@code LocalTime::from}.
434 *
435 * @param temporal the temporal object to convert, not null
436 * @return the local time, not null
437 * @throws DateTimeException if unable to convert to a {@code LocalTime}
438 */
439 public static LocalTime from(TemporalAccessor temporal) {
440 Objects.requireNonNull(temporal, "temporal");
441 LocalTime time = temporal.query(TemporalQueries.localTime());
442 if (time == null) {
443 throw new DateTimeException("Unable to obtain LocalTime from TemporalAccessor: " +
444 temporal + " of type " + temporal.getClass().getName());
445 }
446 return time;
447 }
448
449 //-----------------------------------------------------------------------
450 /**
451 * Obtains an instance of {@code LocalTime} from a text string such as {@code 10:15}.
452 * <p>
453 * The string must represent a valid time and is parsed using
454 * {@link java.time.format.DateTimeFormatter#ISO_LOCAL_TIME}.
455 *
456 * @param text the text to parse such as "10:15:30", not null
457 * @return the parsed local time, not null
458 * @throws DateTimeParseException if the text cannot be parsed
459 */
460 public static LocalTime parse(CharSequence text) {
461 return parse(text, DateTimeFormatter.ISO_LOCAL_TIME);
462 }
463
464 /**
465 * Obtains an instance of {@code LocalTime} from a text string using a specific formatter.
466 * <p>
467 * The text is parsed using the formatter, returning a time.
468 *
469 * @param text the text to parse, not null
470 * @param formatter the formatter to use, not null
471 * @return the parsed local time, not null
472 * @throws DateTimeParseException if the text cannot be parsed
473 */
474 public static LocalTime parse(CharSequence text, DateTimeFormatter formatter) {
475 Objects.requireNonNull(formatter, "formatter");
476 return formatter.parse(text, LocalTime::from);
477 }
478
479 //-----------------------------------------------------------------------
480 /**
481 * Creates a local time from the hour, minute, second and nanosecond fields.
482 * <p>
483 * This factory may return a cached value, but applications must not rely on this.
484 *
485 * @param hour the hour-of-day to represent, validated from 0 to 23
486 * @param minute the minute-of-hour to represent, validated from 0 to 59
487 * @param second the second-of-minute to represent, validated from 0 to 59
488 * @param nanoOfSecond the nano-of-second to represent, validated from 0 to 999,999,999
489 * @return the local time, not null
490 */
491 private static LocalTime create(int hour, int minute, int second, int nanoOfSecond) {
492 if ((minute | second | nanoOfSecond) == 0) {
493 return HOURS[hour];
494 }
495 return new LocalTime(hour, minute, second, nanoOfSecond);
496 }
497
498 /**
499 * Constructor, previously validated.
500 *
501 * @param hour the hour-of-day to represent, validated from 0 to 23
502 * @param minute the minute-of-hour to represent, validated from 0 to 59
503 * @param second the second-of-minute to represent, validated from 0 to 59
504 * @param nanoOfSecond the nano-of-second to represent, validated from 0 to 999,999,999
505 */
506 private LocalTime(int hour, int minute, int second, int nanoOfSecond) {
507 this.hour = (byte) hour;
508 this.minute = (byte) minute;
509 this.second = (byte) second;
510 this.nano = nanoOfSecond;
511 }
512
513 //-----------------------------------------------------------------------
514 /**
515 * Checks if the specified field is supported.
516 * <p>
517 * This checks if this time can be queried for the specified field.
518 * If false, then calling the {@link #range(TemporalField) range},
519 * {@link #get(TemporalField) get} and {@link #with(TemporalField, long)}
520 * methods will throw an exception.
521 * <p>
522 * If the field is a {@link ChronoField} then the query is implemented here.
523 * The supported fields are:
524 * <ul>
525 * <li>{@code NANO_OF_SECOND}
526 * <li>{@code NANO_OF_DAY}
527 * <li>{@code MICRO_OF_SECOND}
528 * <li>{@code MICRO_OF_DAY}
529 * <li>{@code MILLI_OF_SECOND}
530 * <li>{@code MILLI_OF_DAY}
531 * <li>{@code SECOND_OF_MINUTE}
532 * <li>{@code SECOND_OF_DAY}
533 * <li>{@code MINUTE_OF_HOUR}
534 * <li>{@code MINUTE_OF_DAY}
535 * <li>{@code HOUR_OF_AMPM}
536 * <li>{@code CLOCK_HOUR_OF_AMPM}
537 * <li>{@code HOUR_OF_DAY}
538 * <li>{@code CLOCK_HOUR_OF_DAY}
539 * <li>{@code AMPM_OF_DAY}
540 * </ul>
541 * All other {@code ChronoField} instances will return false.
542 * <p>
543 * If the field is not a {@code ChronoField}, then the result of this method
544 * is obtained by invoking {@code TemporalField.isSupportedBy(TemporalAccessor)}
545 * passing {@code this} as the argument.
546 * Whether the field is supported is determined by the field.
547 *
548 * @param field the field to check, null returns false
549 * @return true if the field is supported on this time, false if not
550 */
551 @Override
552 public boolean isSupported(TemporalField field) {
553 if (field instanceof ChronoField) {
554 return field.isTimeBased();
555 }
556 return field != null && field.isSupportedBy(this);
557 }
558
559 /**
560 * Checks if the specified unit is supported.
561 * <p>
562 * This checks if the specified unit can be added to, or subtracted from, this time.
563 * If false, then calling the {@link #plus(long, TemporalUnit)} and
564 * {@link #minus(long, TemporalUnit) minus} methods will throw an exception.
565 * <p>
566 * If the unit is a {@link ChronoUnit} then the query is implemented here.
567 * The supported units are:
568 * <ul>
569 * <li>{@code NANOS}
570 * <li>{@code MICROS}
571 * <li>{@code MILLIS}
572 * <li>{@code SECONDS}
573 * <li>{@code MINUTES}
574 * <li>{@code HOURS}
575 * <li>{@code HALF_DAYS}
576 * </ul>
577 * All other {@code ChronoUnit} instances will return false.
578 * <p>
579 * If the unit is not a {@code ChronoUnit}, then the result of this method
580 * is obtained by invoking {@code TemporalUnit.isSupportedBy(Temporal)}
581 * passing {@code this} as the argument.
582 * Whether the unit is supported is determined by the unit.
583 *
584 * @param unit the unit to check, null returns false
585 * @return true if the unit can be added/subtracted, false if not
586 */
587 @Override // override for Javadoc
588 public boolean isSupported(TemporalUnit unit) {
589 if (unit instanceof ChronoUnit) {
590 return unit.isTimeBased();
591 }
592 return unit != null && unit.isSupportedBy(this);
593 }
594
595 //-----------------------------------------------------------------------
596 /**
597 * Gets the range of valid values for the specified field.
598 * <p>
599 * The range object expresses the minimum and maximum valid values for a field.
600 * This time is used to enhance the accuracy of the returned range.
601 * If it is not possible to return the range, because the field is not supported
602 * or for some other reason, an exception is thrown.
603 * <p>
604 * If the field is a {@link ChronoField} then the query is implemented here.
605 * The {@link #isSupported(TemporalField) supported fields} will return
606 * appropriate range instances.
607 * All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}.
608 * <p>
609 * If the field is not a {@code ChronoField}, then the result of this method
610 * is obtained by invoking {@code TemporalField.rangeRefinedBy(TemporalAccessor)}
611 * passing {@code this} as the argument.
612 * Whether the range can be obtained is determined by the field.
613 *
614 * @param field the field to query the range for, not null
615 * @return the range of valid values for the field, not null
616 * @throws DateTimeException if the range for the field cannot be obtained
617 * @throws UnsupportedTemporalTypeException if the field is not supported
618 */
619 @Override // override for Javadoc
620 public ValueRange range(TemporalField field) {
621 return Temporal.super.range(field);
622 }
623
624 /**
625 * Gets the value of the specified field from this time as an {@code int}.
626 * <p>
627 * This queries this time for the value of the specified field.
628 * The returned value will always be within the valid range of values for the field.
629 * If it is not possible to return the value, because the field is not supported
630 * or for some other reason, an exception is thrown.
631 * <p>
632 * If the field is a {@link ChronoField} then the query is implemented here.
633 * The {@link #isSupported(TemporalField) supported fields} will return valid
634 * values based on this time, except {@code NANO_OF_DAY} and {@code MICRO_OF_DAY}
635 * which are too large to fit in an {@code int} and throw an {@code UnsupportedTemporalTypeException}.
636 * All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}.
637 * <p>
638 * If the field is not a {@code ChronoField}, then the result of this method
639 * is obtained by invoking {@code TemporalField.getFrom(TemporalAccessor)}
640 * passing {@code this} as the argument. Whether the value can be obtained,
641 * and what the value represents, is determined by the field.
642 *
643 * @param field the field to get, not null
644 * @return the value for the field
645 * @throws DateTimeException if a value for the field cannot be obtained or
646 * the value is outside the range of valid values for the field
647 * @throws UnsupportedTemporalTypeException if the field is not supported or
648 * the range of values exceeds an {@code int}
649 * @throws ArithmeticException if numeric overflow occurs
650 */
651 @Override // override for Javadoc and performance
652 public int get(TemporalField field) {
653 if (field instanceof ChronoField) {
654 return get0(field);
655 }
656 return Temporal.super.get(field);
657 }
658
659 /**
660 * Gets the value of the specified field from this time as a {@code long}.
661 * <p>
662 * This queries this time for the value of the specified field.
663 * If it is not possible to return the value, because the field is not supported
664 * or for some other reason, an exception is thrown.
665 * <p>
666 * If the field is a {@link ChronoField} then the query is implemented here.
667 * The {@link #isSupported(TemporalField) supported fields} will return valid
668 * values based on this time.
669 * All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}.
670 * <p>
671 * If the field is not a {@code ChronoField}, then the result of this method
672 * is obtained by invoking {@code TemporalField.getFrom(TemporalAccessor)}
673 * passing {@code this} as the argument. Whether the value can be obtained,
674 * and what the value represents, is determined by the field.
675 *
676 * @param field the field to get, not null
677 * @return the value for the field
678 * @throws DateTimeException if a value for the field cannot be obtained
679 * @throws UnsupportedTemporalTypeException if the field is not supported
680 * @throws ArithmeticException if numeric overflow occurs
681 */
682 @Override
683 public long getLong(TemporalField field) {
684 if (field instanceof ChronoField) {
685 if (field == NANO_OF_DAY) {
686 return toNanoOfDay();
687 }
688 if (field == MICRO_OF_DAY) {
689 return toNanoOfDay() / 1000;
690 }
691 return get0(field);
692 }
693 return field.getFrom(this);
694 }
695
696 private int get0(TemporalField field) {
697 return switch ((ChronoField) field) {
698 case NANO_OF_SECOND -> nano;
699 case NANO_OF_DAY -> throw new UnsupportedTemporalTypeException("Invalid field 'NanoOfDay' for get() method, use getLong() instead");
700 case MICRO_OF_SECOND -> nano / 1000;
701 case MICRO_OF_DAY -> throw new UnsupportedTemporalTypeException("Invalid field 'MicroOfDay' for get() method, use getLong() instead");
702 case MILLI_OF_SECOND -> nano / 1000_000;
703 case MILLI_OF_DAY -> (int) (toNanoOfDay() / 1000_000);
704 case SECOND_OF_MINUTE -> second;
705 case SECOND_OF_DAY -> toSecondOfDay();
706 case MINUTE_OF_HOUR -> minute;
707 case MINUTE_OF_DAY -> hour * 60 + minute;
708 case HOUR_OF_AMPM -> hour % 12;
709 case CLOCK_HOUR_OF_AMPM -> { int ham = hour % 12; yield ham % 12 == 0 ? 12 : ham; }
710 case HOUR_OF_DAY -> hour;
711 case CLOCK_HOUR_OF_DAY -> (hour == 0 ? 24 : hour);
712 case AMPM_OF_DAY -> hour / 12;
713 default -> throw new UnsupportedTemporalTypeException("Unsupported field: " + field);
714 };
715 }
716
717 //-----------------------------------------------------------------------
718 /**
719 * Gets the hour-of-day field.
720 *
721 * @return the hour-of-day, from 0 to 23
722 */
723 public int getHour() {
724 return hour;
725 }
726
727 /**
728 * Gets the minute-of-hour field.
729 *
730 * @return the minute-of-hour, from 0 to 59
731 */
732 public int getMinute() {
733 return minute;
734 }
735
736 /**
737 * Gets the second-of-minute field.
738 *
739 * @return the second-of-minute, from 0 to 59
740 */
741 public int getSecond() {
742 return second;
743 }
744
745 /**
746 * Gets the nano-of-second field.
747 *
748 * @return the nano-of-second, from 0 to 999,999,999
749 */
750 public int getNano() {
751 return nano;
752 }
753
754 //-----------------------------------------------------------------------
755 /**
756 * Returns an adjusted copy of this time.
757 * <p>
758 * This returns a {@code LocalTime}, based on this one, with the time adjusted.
759 * The adjustment takes place using the specified adjuster strategy object.
760 * Read the documentation of the adjuster to understand what adjustment will be made.
761 * <p>
762 * A simple adjuster might simply set the one of the fields, such as the hour field.
763 * A more complex adjuster might set the time to the last hour of the day.
764 * <p>
765 * The result of this method is obtained by invoking the
766 * {@link TemporalAdjuster#adjustInto(Temporal)} method on the
767 * specified adjuster passing {@code this} as the argument.
768 * <p>
769 * This instance is immutable and unaffected by this method call.
770 *
771 * @param adjuster the adjuster to use, not null
772 * @return a {@code LocalTime} based on {@code this} with the adjustment made, not null
773 * @throws DateTimeException if the adjustment cannot be made
774 * @throws ArithmeticException if numeric overflow occurs
775 */
776 @Override
777 public LocalTime with(TemporalAdjuster adjuster) {
778 // optimizations
779 if (adjuster instanceof LocalTime) {
780 return (LocalTime) adjuster;
781 }
782 return (LocalTime) adjuster.adjustInto(this);
783 }
784
785 /**
786 * Returns a copy of this time with the specified field set to a new value.
787 * <p>
788 * This returns a {@code LocalTime}, based on this one, with the value
789 * for the specified field changed.
790 * This can be used to change any supported field, such as the hour, minute or second.
791 * If it is not possible to set the value, because the field is not supported or for
792 * some other reason, an exception is thrown.
793 * <p>
794 * If the field is a {@link ChronoField} then the adjustment is implemented here.
795 * The supported fields behave as follows:
796 * <ul>
797 * <li>{@code NANO_OF_SECOND} -
798 * Returns a {@code LocalTime} with the specified nano-of-second.
799 * The hour, minute and second will be unchanged.
800 * <li>{@code NANO_OF_DAY} -
801 * Returns a {@code LocalTime} with the specified nano-of-day.
802 * This completely replaces the time and is equivalent to {@link #ofNanoOfDay(long)}.
803 * <li>{@code MICRO_OF_SECOND} -
804 * Returns a {@code LocalTime} with the nano-of-second replaced by the specified
805 * micro-of-second multiplied by 1,000.
806 * The hour, minute and second will be unchanged.
807 * <li>{@code MICRO_OF_DAY} -
808 * Returns a {@code LocalTime} with the specified micro-of-day.
809 * This completely replaces the time and is equivalent to using {@link #ofNanoOfDay(long)}
810 * with the micro-of-day multiplied by 1,000.
811 * <li>{@code MILLI_OF_SECOND} -
812 * Returns a {@code LocalTime} with the nano-of-second replaced by the specified
813 * milli-of-second multiplied by 1,000,000.
814 * The hour, minute and second will be unchanged.
815 * <li>{@code MILLI_OF_DAY} -
816 * Returns a {@code LocalTime} with the specified milli-of-day.
817 * This completely replaces the time and is equivalent to using {@link #ofNanoOfDay(long)}
818 * with the milli-of-day multiplied by 1,000,000.
819 * <li>{@code SECOND_OF_MINUTE} -
820 * Returns a {@code LocalTime} with the specified second-of-minute.
821 * The hour, minute and nano-of-second will be unchanged.
822 * <li>{@code SECOND_OF_DAY} -
823 * Returns a {@code LocalTime} with the specified second-of-day.
824 * The nano-of-second will be unchanged.
825 * <li>{@code MINUTE_OF_HOUR} -
826 * Returns a {@code LocalTime} with the specified minute-of-hour.
827 * The hour, second-of-minute and nano-of-second will be unchanged.
828 * <li>{@code MINUTE_OF_DAY} -
829 * Returns a {@code LocalTime} with the specified minute-of-day.
830 * The second-of-minute and nano-of-second will be unchanged.
831 * <li>{@code HOUR_OF_AMPM} -
832 * Returns a {@code LocalTime} with the specified hour-of-am-pm.
833 * The AM/PM, minute-of-hour, second-of-minute and nano-of-second will be unchanged.
834 * <li>{@code CLOCK_HOUR_OF_AMPM} -
835 * Returns a {@code LocalTime} with the specified clock-hour-of-am-pm.
836 * The AM/PM, minute-of-hour, second-of-minute and nano-of-second will be unchanged.
837 * <li>{@code HOUR_OF_DAY} -
838 * Returns a {@code LocalTime} with the specified hour-of-day.
839 * The minute-of-hour, second-of-minute and nano-of-second will be unchanged.
840 * <li>{@code CLOCK_HOUR_OF_DAY} -
841 * Returns a {@code LocalTime} with the specified clock-hour-of-day.
842 * The minute-of-hour, second-of-minute and nano-of-second will be unchanged.
843 * <li>{@code AMPM_OF_DAY} -
844 * Returns a {@code LocalTime} with the specified AM/PM.
845 * The hour-of-am-pm, minute-of-hour, second-of-minute and nano-of-second will be unchanged.
846 * </ul>
847 * <p>
848 * In all cases, if the new value is outside the valid range of values for the field
849 * then a {@code DateTimeException} will be thrown.
850 * <p>
851 * All other {@code ChronoField} instances will throw an {@code UnsupportedTemporalTypeException}.
852 * <p>
853 * If the field is not a {@code ChronoField}, then the result of this method
854 * is obtained by invoking {@code TemporalField.adjustInto(Temporal, long)}
855 * passing {@code this} as the argument. In this case, the field determines
856 * whether and how to adjust the instant.
857 * <p>
858 * This instance is immutable and unaffected by this method call.
859 *
860 * @param field the field to set in the result, not null
861 * @param newValue the new value of the field in the result
862 * @return a {@code LocalTime} based on {@code this} with the specified field set, not null
863 * @throws DateTimeException if the field cannot be set
864 * @throws UnsupportedTemporalTypeException if the field is not supported
865 * @throws ArithmeticException if numeric overflow occurs
866 */
867 @Override
868 public LocalTime with(TemporalField field, long newValue) {
869 if (field instanceof ChronoField chronoField) {
870 chronoField.checkValidValue(newValue);
871 return switch (chronoField) {
872 case NANO_OF_SECOND -> withNano((int) newValue);
873 case NANO_OF_DAY -> LocalTime.ofNanoOfDay(newValue);
874 case MICRO_OF_SECOND -> withNano((int) newValue * 1000);
875 case MICRO_OF_DAY -> LocalTime.ofNanoOfDay(newValue * 1000);
876 case MILLI_OF_SECOND -> withNano((int) newValue * 1000_000);
877 case MILLI_OF_DAY -> LocalTime.ofNanoOfDay(newValue * 1000_000);
878 case SECOND_OF_MINUTE -> withSecond((int) newValue);
879 case SECOND_OF_DAY -> plusSeconds(newValue - toSecondOfDay());
880 case MINUTE_OF_HOUR -> withMinute((int) newValue);
881 case MINUTE_OF_DAY -> plusMinutes(newValue - (hour * 60 + minute));
882 case HOUR_OF_AMPM -> plusHours(newValue - (hour % 12));
883 case CLOCK_HOUR_OF_AMPM -> plusHours((newValue == 12 ? 0 : newValue) - (hour % 12));
884 case HOUR_OF_DAY -> withHour((int) newValue);
885 case CLOCK_HOUR_OF_DAY -> withHour((int) (newValue == 24 ? 0 : newValue));
886 case AMPM_OF_DAY -> plusHours((newValue - (hour / 12)) * 12);
887 default -> throw new UnsupportedTemporalTypeException("Unsupported field: " + field);
888 };
889 }
890 return field.adjustInto(this, newValue);
891 }
892
893 //-----------------------------------------------------------------------
894 /**
895 * Returns a copy of this {@code LocalTime} with the hour-of-day altered.
896 * <p>
897 * This instance is immutable and unaffected by this method call.
898 *
899 * @param hour the hour-of-day to set in the result, from 0 to 23
900 * @return a {@code LocalTime} based on this time with the requested hour, not null
901 * @throws DateTimeException if the hour value is invalid
902 */
903 public LocalTime withHour(int hour) {
904 if (this.hour == hour) {
905 return this;
906 }
907 HOUR_OF_DAY.checkValidValue(hour);
908 return create(hour, minute, second, nano);
909 }
910
911 /**
912 * Returns a copy of this {@code LocalTime} with the minute-of-hour altered.
913 * <p>
914 * This instance is immutable and unaffected by this method call.
915 *
916 * @param minute the minute-of-hour to set in the result, from 0 to 59
917 * @return a {@code LocalTime} based on this time with the requested minute, not null
918 * @throws DateTimeException if the minute value is invalid
919 */
920 public LocalTime withMinute(int minute) {
921 if (this.minute == minute) {
922 return this;
923 }
924 MINUTE_OF_HOUR.checkValidValue(minute);
925 return create(hour, minute, second, nano);
926 }
927
928 /**
929 * Returns a copy of this {@code LocalTime} with the second-of-minute altered.
930 * <p>
931 * This instance is immutable and unaffected by this method call.
932 *
933 * @param second the second-of-minute to set in the result, from 0 to 59
934 * @return a {@code LocalTime} based on this time with the requested second, not null
935 * @throws DateTimeException if the second value is invalid
936 */
937 public LocalTime withSecond(int second) {
938 if (this.second == second) {
939 return this;
940 }
941 SECOND_OF_MINUTE.checkValidValue(second);
942 return create(hour, minute, second, nano);
943 }
944
945 /**
946 * Returns a copy of this {@code LocalTime} with the nano-of-second altered.
947 * <p>
948 * This instance is immutable and unaffected by this method call.
949 *
950 * @param nanoOfSecond the nano-of-second to set in the result, from 0 to 999,999,999
951 * @return a {@code LocalTime} based on this time with the requested nanosecond, not null
952 * @throws DateTimeException if the nanos value is invalid
953 */
954 public LocalTime withNano(int nanoOfSecond) {
955 if (this.nano == nanoOfSecond) {
956 return this;
957 }
958 NANO_OF_SECOND.checkValidValue(nanoOfSecond);
959 return create(hour, minute, second, nanoOfSecond);
960 }
961
962 //-----------------------------------------------------------------------
963 /**
964 * Returns a copy of this {@code LocalTime} with the time truncated.
965 * <p>
966 * Truncation returns a copy of the original time with fields
967 * smaller than the specified unit set to zero.
968 * For example, truncating with the {@link ChronoUnit#MINUTES minutes} unit
969 * will set the second-of-minute and nano-of-second field to zero.
970 * <p>
971 * The unit must have a {@linkplain TemporalUnit#getDuration() duration}
972 * that divides into the length of a standard day without remainder.
973 * This includes all supplied time units on {@link ChronoUnit} and
974 * {@link ChronoUnit#DAYS DAYS}. Other units throw an exception.
975 * <p>
976 * This instance is immutable and unaffected by this method call.
977 *
978 * @param unit the unit to truncate to, not null
979 * @return a {@code LocalTime} based on this time with the time truncated, not null
980 * @throws DateTimeException if unable to truncate
981 * @throws UnsupportedTemporalTypeException if the unit is not supported
982 */
983 public LocalTime truncatedTo(TemporalUnit unit) {
984 if (unit == ChronoUnit.NANOS) {
985 return this;
986 }
987 Duration unitDur = unit.getDuration();
988 if (unitDur.getSeconds() > SECONDS_PER_DAY) {
989 throw new UnsupportedTemporalTypeException("Unit is too large to be used for truncation");
990 }
991 long dur = unitDur.toNanos();
992 if ((NANOS_PER_DAY % dur) != 0) {
993 throw new UnsupportedTemporalTypeException("Unit must divide into a standard day without remainder");
994 }
995 long nod = toNanoOfDay();
996 return ofNanoOfDay((nod / dur) * dur);
997 }
998
999 //-----------------------------------------------------------------------
1000 /**
1001 * Returns a copy of this time with the specified amount added.
1002 * <p>
1003 * This returns a {@code LocalTime}, based on this one, with the specified amount added.
1004 * The amount is typically {@link Duration} but may be any other type implementing
1005 * the {@link TemporalAmount} interface.
1006 * <p>
1007 * The calculation is delegated to the amount object by calling
1008 * {@link TemporalAmount#addTo(Temporal)}. The amount implementation is free
1009 * to implement the addition in any way it wishes, however it typically
1010 * calls back to {@link #plus(long, TemporalUnit)}. Consult the documentation
1011 * of the amount implementation to determine if it can be successfully added.
1012 * <p>
1013 * This instance is immutable and unaffected by this method call.
1014 *
1015 * @param amountToAdd the amount to add, not null
1016 * @return a {@code LocalTime} based on this time with the addition made, not null
1017 * @throws DateTimeException if the addition cannot be made
1018 * @throws ArithmeticException if numeric overflow occurs
1019 */
1020 @Override
1021 public LocalTime plus(TemporalAmount amountToAdd) {
1022 return (LocalTime) amountToAdd.addTo(this);
1023 }
1024
1025 /**
1026 * Returns a copy of this time with the specified amount added.
1027 * <p>
1028 * This returns a {@code LocalTime}, based on this one, with the amount
1029 * in terms of the unit added. If it is not possible to add the amount, because the
1030 * unit is not supported or for some other reason, an exception is thrown.
1031 * <p>
1032 * If the field is a {@link ChronoUnit} then the addition is implemented here.
1033 * The supported fields behave as follows:
1034 * <ul>
1035 * <li>{@code NANOS} -
1036 * Returns a {@code LocalTime} with the specified number of nanoseconds added.
1037 * This is equivalent to {@link #plusNanos(long)}.
1038 * <li>{@code MICROS} -
1039 * Returns a {@code LocalTime} with the specified number of microseconds added.
1040 * This is equivalent to {@link #plusNanos(long)} with the amount
1041 * multiplied by 1,000.
1042 * <li>{@code MILLIS} -
1043 * Returns a {@code LocalTime} with the specified number of milliseconds added.
1044 * This is equivalent to {@link #plusNanos(long)} with the amount
1045 * multiplied by 1,000,000.
1046 * <li>{@code SECONDS} -
1047 * Returns a {@code LocalTime} with the specified number of seconds added.
1048 * This is equivalent to {@link #plusSeconds(long)}.
1049 * <li>{@code MINUTES} -
1050 * Returns a {@code LocalTime} with the specified number of minutes added.
1051 * This is equivalent to {@link #plusMinutes(long)}.
1052 * <li>{@code HOURS} -
1053 * Returns a {@code LocalTime} with the specified number of hours added.
1054 * This is equivalent to {@link #plusHours(long)}.
1055 * <li>{@code HALF_DAYS} -
1056 * Returns a {@code LocalTime} with the specified number of half-days added.
1057 * This is equivalent to {@link #plusHours(long)} with the amount
1058 * multiplied by 12.
1059 * </ul>
1060 * <p>
1061 * All other {@code ChronoUnit} instances will throw an {@code UnsupportedTemporalTypeException}.
1062 * <p>
1063 * If the field is not a {@code ChronoUnit}, then the result of this method
1064 * is obtained by invoking {@code TemporalUnit.addTo(Temporal, long)}
1065 * passing {@code this} as the argument. In this case, the unit determines
1066 * whether and how to perform the addition.
1067 * <p>
1068 * This instance is immutable and unaffected by this method call.
1069 *
1070 * @param amountToAdd the amount of the unit to add to the result, may be negative
1071 * @param unit the unit of the amount to add, not null
1072 * @return a {@code LocalTime} based on this time with the specified amount added, not null
1073 * @throws DateTimeException if the addition cannot be made
1074 * @throws UnsupportedTemporalTypeException if the unit is not supported
1075 * @throws ArithmeticException if numeric overflow occurs
1076 */
1077 @Override
1078 public LocalTime plus(long amountToAdd, TemporalUnit unit) {
1079 if (unit instanceof ChronoUnit chronoUnit) {
1080 return switch (chronoUnit) {
1081 case NANOS -> plusNanos(amountToAdd);
1082 case MICROS -> plusNanos((amountToAdd % MICROS_PER_DAY) * 1000);
1083 case MILLIS -> plusNanos((amountToAdd % MILLIS_PER_DAY) * 1000_000);
1084 case SECONDS -> plusSeconds(amountToAdd);
1085 case MINUTES -> plusMinutes(amountToAdd);
1086 case HOURS -> plusHours(amountToAdd);
1087 case HALF_DAYS -> plusHours((amountToAdd % 2) * 12);
1088 default -> throw new UnsupportedTemporalTypeException("Unsupported unit: " + unit);
1089 };
1090 }
1091 return unit.addTo(this, amountToAdd);
1092 }
1093
1094 //-----------------------------------------------------------------------
1095 /**
1096 * Returns a copy of this {@code LocalTime} with the specified number of hours added.
1097 * <p>
1098 * This adds the specified number of hours to this time, returning a new time.
1099 * The calculation wraps around midnight.
1100 * <p>
1101 * This instance is immutable and unaffected by this method call.
1102 *
1103 * @param hoursToAdd the hours to add, may be negative
1104 * @return a {@code LocalTime} based on this time with the hours added, not null
1105 */
1106 public LocalTime plusHours(long hoursToAdd) {
1107 if (hoursToAdd == 0) {
1108 return this;
1109 }
1110 int newHour = ((int) (hoursToAdd % HOURS_PER_DAY) + hour + HOURS_PER_DAY) % HOURS_PER_DAY;
1111 return create(newHour, minute, second, nano);
1112 }
1113
1114 /**
1115 * Returns a copy of this {@code LocalTime} with the specified number of minutes added.
1116 * <p>
1117 * This adds the specified number of minutes to this time, returning a new time.
1118 * The calculation wraps around midnight.
1119 * <p>
1120 * This instance is immutable and unaffected by this method call.
1121 *
1122 * @param minutesToAdd the minutes to add, may be negative
1123 * @return a {@code LocalTime} based on this time with the minutes added, not null
1124 */
1125 public LocalTime plusMinutes(long minutesToAdd) {
1126 if (minutesToAdd == 0) {
1127 return this;
1128 }
1129 int mofd = hour * MINUTES_PER_HOUR + minute;
1130 int newMofd = ((int) (minutesToAdd % MINUTES_PER_DAY) + mofd + MINUTES_PER_DAY) % MINUTES_PER_DAY;
1131 if (mofd == newMofd) {
1132 return this;
1133 }
1134 int newHour = newMofd / MINUTES_PER_HOUR;
1135 int newMinute = newMofd % MINUTES_PER_HOUR;
1136 return create(newHour, newMinute, second, nano);
1137 }
1138
1139 /**
1140 * Returns a copy of this {@code LocalTime} with the specified number of seconds added.
1141 * <p>
1142 * This adds the specified number of seconds to this time, returning a new time.
1143 * The calculation wraps around midnight.
1144 * <p>
1145 * This instance is immutable and unaffected by this method call.
1146 *
1147 * @param secondstoAdd the seconds to add, may be negative
1148 * @return a {@code LocalTime} based on this time with the seconds added, not null
1149 */
1150 public LocalTime plusSeconds(long secondstoAdd) {
1151 if (secondstoAdd == 0) {
1152 return this;
1153 }
1154 int sofd = hour * SECONDS_PER_HOUR +
1155 minute * SECONDS_PER_MINUTE + second;
1156 int newSofd = ((int) (secondstoAdd % SECONDS_PER_DAY) + sofd + SECONDS_PER_DAY) % SECONDS_PER_DAY;
1157 if (sofd == newSofd) {
1158 return this;
1159 }
1160 int newHour = newSofd / SECONDS_PER_HOUR;
1161 int newMinute = (newSofd / SECONDS_PER_MINUTE) % MINUTES_PER_HOUR;
1162 int newSecond = newSofd % SECONDS_PER_MINUTE;
1163 return create(newHour, newMinute, newSecond, nano);
1164 }
1165
1166 /**
1167 * Returns a copy of this {@code LocalTime} with the specified number of nanoseconds added.
1168 * <p>
1169 * This adds the specified number of nanoseconds to this time, returning a new time.
1170 * The calculation wraps around midnight.
1171 * <p>
1172 * This instance is immutable and unaffected by this method call.
1173 *
1174 * @param nanosToAdd the nanos to add, may be negative
1175 * @return a {@code LocalTime} based on this time with the nanoseconds added, not null
1176 */
1177 public LocalTime plusNanos(long nanosToAdd) {
1178 if (nanosToAdd == 0) {
1179 return this;
1180 }
1181 long nofd = toNanoOfDay();
1182 long newNofd = ((nanosToAdd % NANOS_PER_DAY) + nofd + NANOS_PER_DAY) % NANOS_PER_DAY;
1183 if (nofd == newNofd) {
1184 return this;
1185 }
1186 int newHour = (int) (newNofd / NANOS_PER_HOUR);
1187 int newMinute = (int) ((newNofd / NANOS_PER_MINUTE) % MINUTES_PER_HOUR);
1188 int newSecond = (int) ((newNofd / NANOS_PER_SECOND) % SECONDS_PER_MINUTE);
1189 int newNano = (int) (newNofd % NANOS_PER_SECOND);
1190 return create(newHour, newMinute, newSecond, newNano);
1191 }
1192
1193 //-----------------------------------------------------------------------
1194 /**
1195 * Returns a copy of this time with the specified amount subtracted.
1196 * <p>
1197 * This returns a {@code LocalTime}, based on this one, with the specified amount subtracted.
1198 * The amount is typically {@link Duration} but may be any other type implementing
1199 * the {@link TemporalAmount} interface.
1200 * <p>
1201 * The calculation is delegated to the amount object by calling
1202 * {@link TemporalAmount#subtractFrom(Temporal)}. The amount implementation is free
1203 * to implement the subtraction in any way it wishes, however it typically
1204 * calls back to {@link #minus(long, TemporalUnit)}. Consult the documentation
1205 * of the amount implementation to determine if it can be successfully subtracted.
1206 * <p>
1207 * This instance is immutable and unaffected by this method call.
1208 *
1209 * @param amountToSubtract the amount to subtract, not null
1210 * @return a {@code LocalTime} based on this time with the subtraction made, not null
1211 * @throws DateTimeException if the subtraction cannot be made
1212 * @throws ArithmeticException if numeric overflow occurs
1213 */
1214 @Override
1215 public LocalTime minus(TemporalAmount amountToSubtract) {
1216 return (LocalTime) amountToSubtract.subtractFrom(this);
1217 }
1218
1219 /**
1220 * Returns a copy of this time with the specified amount subtracted.
1221 * <p>
1222 * This returns a {@code LocalTime}, based on this one, with the amount
1223 * in terms of the unit subtracted. If it is not possible to subtract the amount,
1224 * because the unit is not supported or for some other reason, an exception is thrown.
1225 * <p>
1226 * This method is equivalent to {@link #plus(long, TemporalUnit)} with the amount negated.
1227 * See that method for a full description of how addition, and thus subtraction, works.
1228 * <p>
1229 * This instance is immutable and unaffected by this method call.
1230 *
1231 * @param amountToSubtract the amount of the unit to subtract from the result, may be negative
1232 * @param unit the unit of the amount to subtract, not null
1233 * @return a {@code LocalTime} based on this time with the specified amount subtracted, not null
1234 * @throws DateTimeException if the subtraction cannot be made
1235 * @throws UnsupportedTemporalTypeException if the unit is not supported
1236 * @throws ArithmeticException if numeric overflow occurs
1237 */
1238 @Override
1239 public LocalTime minus(long amountToSubtract, TemporalUnit unit) {
1240 return (amountToSubtract == Long.MIN_VALUE ? plus(Long.MAX_VALUE, unit).plus(1, unit) : plus(-amountToSubtract, unit));
1241 }
1242
1243 //-----------------------------------------------------------------------
1244 /**
1245 * Returns a copy of this {@code LocalTime} with the specified number of hours subtracted.
1246 * <p>
1247 * This subtracts the specified number of hours from this time, returning a new time.
1248 * The calculation wraps around midnight.
1249 * <p>
1250 * This instance is immutable and unaffected by this method call.
1251 *
1252 * @param hoursToSubtract the hours to subtract, may be negative
1253 * @return a {@code LocalTime} based on this time with the hours subtracted, not null
1254 */
1255 public LocalTime minusHours(long hoursToSubtract) {
1256 return plusHours(-(hoursToSubtract % HOURS_PER_DAY));
1257 }
1258
1259 /**
1260 * Returns a copy of this {@code LocalTime} with the specified number of minutes subtracted.
1261 * <p>
1262 * This subtracts the specified number of minutes from this time, returning a new time.
1263 * The calculation wraps around midnight.
1264 * <p>
1265 * This instance is immutable and unaffected by this method call.
1266 *
1267 * @param minutesToSubtract the minutes to subtract, may be negative
1268 * @return a {@code LocalTime} based on this time with the minutes subtracted, not null
1269 */
1270 public LocalTime minusMinutes(long minutesToSubtract) {
1271 return plusMinutes(-(minutesToSubtract % MINUTES_PER_DAY));
1272 }
1273
1274 /**
1275 * Returns a copy of this {@code LocalTime} with the specified number of seconds subtracted.
1276 * <p>
1277 * This subtracts the specified number of seconds from this time, returning a new time.
1278 * The calculation wraps around midnight.
1279 * <p>
1280 * This instance is immutable and unaffected by this method call.
1281 *
1282 * @param secondsToSubtract the seconds to subtract, may be negative
1283 * @return a {@code LocalTime} based on this time with the seconds subtracted, not null
1284 */
1285 public LocalTime minusSeconds(long secondsToSubtract) {
1286 return plusSeconds(-(secondsToSubtract % SECONDS_PER_DAY));
1287 }
1288
1289 /**
1290 * Returns a copy of this {@code LocalTime} with the specified number of nanoseconds subtracted.
1291 * <p>
1292 * This subtracts the specified number of nanoseconds from this time, returning a new time.
1293 * The calculation wraps around midnight.
1294 * <p>
1295 * This instance is immutable and unaffected by this method call.
1296 *
1297 * @param nanosToSubtract the nanos to subtract, may be negative
1298 * @return a {@code LocalTime} based on this time with the nanoseconds subtracted, not null
1299 */
1300 public LocalTime minusNanos(long nanosToSubtract) {
1301 return plusNanos(-(nanosToSubtract % NANOS_PER_DAY));
1302 }
1303
1304 //-----------------------------------------------------------------------
1305 /**
1306 * Queries this time using the specified query.
1307 * <p>
1308 * This queries this time using the specified query strategy object.
1309 * The {@code TemporalQuery} object defines the logic to be used to
1310 * obtain the result. Read the documentation of the query to understand
1311 * what the result of this method will be.
1312 * <p>
1313 * The result of this method is obtained by invoking the
1314 * {@link TemporalQuery#queryFrom(TemporalAccessor)} method on the
1315 * specified query passing {@code this} as the argument.
1316 *
1317 * @param <R> the type of the result
1318 * @param query the query to invoke, not null
1319 * @return the query result, null may be returned (defined by the query)
1320 * @throws DateTimeException if unable to query (defined by the query)
1321 * @throws ArithmeticException if numeric overflow occurs (defined by the query)
1322 */
1323 @SuppressWarnings("unchecked")
1324 @Override
1325 public <R> R query(TemporalQuery<R> query) {
1326 if (query == TemporalQueries.chronology() || query == TemporalQueries.zoneId() ||
1327 query == TemporalQueries.zone() || query == TemporalQueries.offset()) {
1328 return null;
1329 } else if (query == TemporalQueries.localTime()) {
1330 return (R) this;
1331 } else if (query == TemporalQueries.localDate()) {
1332 return null;
1333 } else if (query == TemporalQueries.precision()) {
1334 return (R) NANOS;
1335 }
1336 // inline TemporalAccessor.super.query(query) as an optimization
1337 // non-JDK classes are not permitted to make this optimization
1338 return query.queryFrom(this);
1339 }
1340
1341 /**
1342 * Adjusts the specified temporal object to have the same time as this object.
1343 * <p>
1344 * This returns a temporal object of the same observable type as the input
1345 * with the time changed to be the same as this.
1346 * <p>
1347 * The adjustment is equivalent to using {@link Temporal#with(TemporalField, long)}
1348 * passing {@link ChronoField#NANO_OF_DAY} as the field.
1349 * <p>
1350 * In most cases, it is clearer to reverse the calling pattern by using
1351 * {@link Temporal#with(TemporalAdjuster)}:
1352 * <pre>
1353 * // these two lines are equivalent, but the second approach is recommended
1354 * temporal = thisLocalTime.adjustInto(temporal);
1355 * temporal = temporal.with(thisLocalTime);
1356 * </pre>
1357 * <p>
1358 * This instance is immutable and unaffected by this method call.
1359 *
1360 * @param temporal the target object to be adjusted, not null
1361 * @return the adjusted object, not null
1362 * @throws DateTimeException if unable to make the adjustment
1363 * @throws ArithmeticException if numeric overflow occurs
1364 */
1365 @Override
1366 public Temporal adjustInto(Temporal temporal) {
1367 return temporal.with(NANO_OF_DAY, toNanoOfDay());
1368 }
1369
1370 /**
1371 * Calculates the amount of time until another time in terms of the specified unit.
1372 * <p>
1373 * This calculates the amount of time between two {@code LocalTime}
1374 * objects in terms of a single {@code TemporalUnit}.
1375 * The start and end points are {@code this} and the specified time.
1376 * The result will be negative if the end is before the start.
1377 * The {@code Temporal} passed to this method is converted to a
1378 * {@code LocalTime} using {@link #from(TemporalAccessor)}.
1379 * For example, the amount in hours between two times can be calculated
1380 * using {@code startTime.until(endTime, HOURS)}.
1381 * <p>
1382 * The calculation returns a whole number, representing the number of
1383 * complete units between the two times.
1384 * For example, the amount in hours between 11:30 and 13:29 will only
1385 * be one hour as it is one minute short of two hours.
1386 * <p>
1387 * There are two equivalent ways of using this method.
1388 * The first is to invoke this method.
1389 * The second is to use {@link TemporalUnit#between(Temporal, Temporal)}:
1390 * <pre>
1391 * // these two lines are equivalent
1392 * amount = start.until(end, MINUTES);
1393 * amount = MINUTES.between(start, end);
1394 * </pre>
1395 * The choice should be made based on which makes the code more readable.
1396 * <p>
1397 * The calculation is implemented in this method for {@link ChronoUnit}.
1398 * The units {@code NANOS}, {@code MICROS}, {@code MILLIS}, {@code SECONDS},
1399 * {@code MINUTES}, {@code HOURS} and {@code HALF_DAYS} are supported.
1400 * Other {@code ChronoUnit} values will throw an exception.
1401 * <p>
1402 * If the unit is not a {@code ChronoUnit}, then the result of this method
1403 * is obtained by invoking {@code TemporalUnit.between(Temporal, Temporal)}
1404 * passing {@code this} as the first argument and the converted input temporal
1405 * as the second argument.
1406 * <p>
1407 * This instance is immutable and unaffected by this method call.
1408 *
1409 * @param endExclusive the end time, exclusive, which is converted to a {@code LocalTime}, not null
1410 * @param unit the unit to measure the amount in, not null
1411 * @return the amount of time between this time and the end time
1412 * @throws DateTimeException if the amount cannot be calculated, or the end
1413 * temporal cannot be converted to a {@code LocalTime}
1414 * @throws UnsupportedTemporalTypeException if the unit is not supported
1415 * @throws ArithmeticException if numeric overflow occurs
1416 */
1417 @Override
1418 public long until(Temporal endExclusive, TemporalUnit unit) {
1419 LocalTime end = LocalTime.from(endExclusive);
1420 if (unit instanceof ChronoUnit chronoUnit) {
1421 long nanosUntil = end.toNanoOfDay() - toNanoOfDay(); // no overflow
1422 return switch (chronoUnit) {
1423 case NANOS -> nanosUntil;
1424 case MICROS -> nanosUntil / 1000;
1425 case MILLIS -> nanosUntil / 1000_000;
1426 case SECONDS -> nanosUntil / NANOS_PER_SECOND;
1427 case MINUTES -> nanosUntil / NANOS_PER_MINUTE;
1428 case HOURS -> nanosUntil / NANOS_PER_HOUR;
1429 case HALF_DAYS -> nanosUntil / (12 * NANOS_PER_HOUR);
1430 default -> throw new UnsupportedTemporalTypeException("Unsupported unit: " + unit);
1431 };
1432 }
1433 return unit.between(this, end);
1434 }
1435
1436 /**
1437 * Formats this time using the specified formatter.
1438 * <p>
1439 * This time will be passed to the formatter to produce a string.
1440 *
1441 * @param formatter the formatter to use, not null
1442 * @return the formatted time string, not null
1443 * @throws DateTimeException if an error occurs during printing
1444 */
1445 public String format(DateTimeFormatter formatter) {
1446 Objects.requireNonNull(formatter, "formatter");
1447 return formatter.format(this);
1448 }
1449
1450 //-----------------------------------------------------------------------
1451 /**
1452 * Combines this time with a date to create a {@code LocalDateTime}.
1453 * <p>
1454 * This returns a {@code LocalDateTime} formed from this time at the specified date.
1455 * All possible combinations of date and time are valid.
1456 *
1457 * @param date the date to combine with, not null
1458 * @return the local date-time formed from this time and the specified date, not null
1459 */
1460 public LocalDateTime atDate(LocalDate date) {
1461 return LocalDateTime.of(date, this);
1462 }
1463
1464 /**
1465 * Combines this time with an offset to create an {@code OffsetTime}.
1466 * <p>
1467 * This returns an {@code OffsetTime} formed from this time at the specified offset.
1468 * All possible combinations of time and offset are valid.
1469 *
1470 * @param offset the offset to combine with, not null
1471 * @return the offset time formed from this time and the specified offset, not null
1472 */
1473 public OffsetTime atOffset(ZoneOffset offset) {
1474 return OffsetTime.of(this, offset);
1475 }
1476
1477 //-----------------------------------------------------------------------
1478 /**
1479 * Extracts the time as seconds of day,
1480 * from {@code 0} to {@code 24 * 60 * 60 - 1}.
1481 *
1482 * @return the second-of-day equivalent to this time
1483 */
1484 public int toSecondOfDay() {
1485 int total = hour * SECONDS_PER_HOUR;
1486 total += minute * SECONDS_PER_MINUTE;
1487 total += second;
1488 return total;
1489 }
1490
1491 /**
1492 * Extracts the time as nanos of day,
1493 * from {@code 0} to {@code 24 * 60 * 60 * 1,000,000,000 - 1}.
1494 *
1495 * @return the nano of day equivalent to this time
1496 */
1497 public long toNanoOfDay() {
1498 long total = hour * NANOS_PER_HOUR;
1499 total += minute * NANOS_PER_MINUTE;
1500 total += second * NANOS_PER_SECOND;
1501 total += nano;
1502 return total;
1503 }
1504
1505 /**
1506 * Converts this {@code LocalTime} to the number of seconds since the epoch
1507 * of 1970-01-01T00:00:00Z.
1508 * <p>
1509 * This combines this local time with the specified date and
1510 * offset to calculate the epoch-second value, which is the
1511 * number of elapsed seconds from 1970-01-01T00:00:00Z.
1512 * Instants on the time-line after the epoch are positive, earlier
1513 * are negative.
1514 *
1515 * @param date the local date, not null
1516 * @param offset the zone offset, not null
1517 * @return the number of seconds since the epoch of 1970-01-01T00:00:00Z, may be negative
1518 * @since 9
1519 */
1520 public long toEpochSecond(LocalDate date, ZoneOffset offset) {
1521 Objects.requireNonNull(date, "date");
1522 Objects.requireNonNull(offset, "offset");
1523 long epochDay = date.toEpochDay();
1524 long secs = epochDay * 86400 + toSecondOfDay();
1525 secs -= offset.getTotalSeconds();
1526 return secs;
1527 }
1528
1529 //-----------------------------------------------------------------------
1530 /**
1531 * Compares this time to another time.
1532 * <p>
1533 * The comparison is based on the time-line position of the local times within a day.
1534 * It is "consistent with equals", as defined by {@link Comparable}.
1535 *
1536 * @param other the other time to compare to, not null
1537 * @return the comparator value, that is less than zero if this is before {@code other},
1538 * zero if they are equal, or greater than zero if this is after {@code other}
1539 * @see #isBefore
1540 * @see #isAfter
1541 */
1542 @Override
1543 public int compareTo(LocalTime other) {
1544 int cmp = Integer.compare(hour, other.hour);
1545 if (cmp == 0) {
1546 cmp = Integer.compare(minute, other.minute);
1547 if (cmp == 0) {
1548 cmp = Integer.compare(second, other.second);
1549 if (cmp == 0) {
1550 cmp = Integer.compare(nano, other.nano);
1551 }
1552 }
1553 }
1554 return cmp;
1555 }
1556
1557 /**
1558 * Checks if this time is after the specified time.
1559 * <p>
1560 * The comparison is based on the time-line position of the time within a day.
1561 *
1562 * @param other the other time to compare to, not null
1563 * @return true if this is after the specified time
1564 */
1565 public boolean isAfter(LocalTime other) {
1566 return compareTo(other) > 0;
1567 }
1568
1569 /**
1570 * Checks if this time is before the specified time.
1571 * <p>
1572 * The comparison is based on the time-line position of the time within a day.
1573 *
1574 * @param other the other time to compare to, not null
1575 * @return true if this point is before the specified time
1576 */
1577 public boolean isBefore(LocalTime other) {
1578 return compareTo(other) < 0;
1579 }
1580
1581 //-----------------------------------------------------------------------
1582 /**
1583 * Checks if this time is equal to another time.
1584 * <p>
1585 * The comparison is based on the time-line position of the time within a day.
1586 * <p>
1587 * Only objects of type {@code LocalTime} are compared, other types return false.
1588 * To compare the date of two {@code TemporalAccessor} instances, use
1589 * {@link ChronoField#NANO_OF_DAY} as a comparator.
1590 *
1591 * @param obj the object to check, null returns false
1592 * @return true if this is equal to the other time
1593 */
1594 @Override
1595 public boolean equals(Object obj) {
1596 if (this == obj) {
1597 return true;
1598 }
1599 return (obj instanceof LocalTime other)
1600 && hour == other.hour
1601 && minute == other.minute
1602 && second == other.second
1603 && nano == other.nano;
1604 }
1605
1606 /**
1607 * A hash code for this time.
1608 *
1609 * @return a suitable hash code
1610 */
1611 @Override
1612 public int hashCode() {
1613 return Long.hashCode(toNanoOfDay());
1614 }
1615
1616 //-----------------------------------------------------------------------
1617 /**
1618 * Outputs this time as a {@code String}, such as {@code 10:15}.
1619 * <p>
1620 * The output will be one of the following ISO-8601 formats:
1621 * <ul>
1622 * <li>{@code HH:mm}</li>
1623 * <li>{@code HH:mm:ss}</li>
1624 * <li>{@code HH:mm:ss.SSS}</li>
1625 * <li>{@code HH:mm:ss.SSSSSS}</li>
1626 * <li>{@code HH:mm:ss.SSSSSSSSS}</li>
1627 * </ul>
1628 * The format used will be the shortest that outputs the full value of
1629 * the time where the omitted parts are implied to be zero.
1630 *
1631 * @return a string representation of this time, not null
1632 */
1633 @Override
1634 public String toString() {
1635 var buf = new StringBuilder(18);
1636 formatTo(buf);
1637 return buf.toString();
1638 }
1639
1640 /**
1641 * Prints the toString result to the given buf, avoiding extra string allocations.
1642 * Requires extra capacity of 18 to avoid StringBuilder reallocation.
1643 */
1644 void formatTo(StringBuilder buf) {
1645 int hourValue = hour;
1646 int minuteValue = minute;
1647 int secondValue = second;
1648 int nanoValue = nano;
1649 buf.append(hourValue < 10 ? "0" : "").append(hourValue)
1650 .append(minuteValue < 10 ? ":0" : ":").append(minuteValue);
1651 if (secondValue > 0 || nanoValue > 0) {
1652 buf.append(secondValue < 10 ? ":0" : ":").append(secondValue);
1653 if (nanoValue > 0) {
1654 buf.append('.');
1655 int zeros = 9 - DecimalDigits.stringSize(nanoValue);
1656 if (zeros > 0) {
1657 buf.repeat('0', zeros);
1658 }
1659 int digits;
1660 if (nanoValue % 1_000_000 == 0) {
1661 digits = nanoValue / 1_000_000;
1662 } else if (nanoValue % 1000 == 0) {
1663 digits = nanoValue / 1000;
1664 } else {
1665 digits = nanoValue;
1666 }
1667 buf.append(digits);
1668 }
1669 }
1670 }
1671
1672 //-----------------------------------------------------------------------
1673 /**
1674 * Writes the object using a
1675 * <a href="{@docRoot}/serialized-form.html#java.time.Ser">dedicated serialized form</a>.
1676 * @serialData
1677 * A twos-complement value indicates the remaining values are not in the stream
1678 * and should be set to zero.
1679 * <pre>
1680 * out.writeByte(4); // identifies a LocalTime
1681 * if (nano == 0) {
1682 * if (second == 0) {
1683 * if (minute == 0) {
1684 * out.writeByte(~hour);
1685 * } else {
1686 * out.writeByte(hour);
1687 * out.writeByte(~minute);
1688 * }
1689 * } else {
1690 * out.writeByte(hour);
1691 * out.writeByte(minute);
1692 * out.writeByte(~second);
1693 * }
1694 * } else {
1695 * out.writeByte(hour);
1696 * out.writeByte(minute);
1697 * out.writeByte(second);
1698 * out.writeInt(nano);
1699 * }
1700 * </pre>
1701 *
1702 * @return the instance of {@code Ser}, not null
1703 */
1704 @java.io.Serial
1705 private Object writeReplace() {
1706 return new Ser(Ser.LOCAL_TIME_TYPE, this);
1707 }
1708
1709 /**
1710 * Defend against malicious streams.
1711 *
1712 * @param s the stream to read
1713 * @throws InvalidObjectException always
1714 */
1715 @java.io.Serial
1716 private void readObject(ObjectInputStream s) throws InvalidObjectException {
1717 throw new InvalidObjectException("Deserialization via serialization delegate");
1718 }
1719
1720 void writeExternal(DataOutput out) throws IOException {
1721 if (nano == 0) {
1722 if (second == 0) {
1723 if (minute == 0) {
1724 out.writeByte(~hour);
1725 } else {
1726 out.writeByte(hour);
1727 out.writeByte(~minute);
1728 }
1729 } else {
1730 out.writeByte(hour);
1731 out.writeByte(minute);
1732 out.writeByte(~second);
1733 }
1734 } else {
1735 out.writeByte(hour);
1736 out.writeByte(minute);
1737 out.writeByte(second);
1738 out.writeInt(nano);
1739 }
1740 }
1741
1742 static LocalTime readExternal(DataInput in) throws IOException {
1743 int hour = in.readByte();
1744 int minute = 0;
1745 int second = 0;
1746 int nano = 0;
1747 if (hour < 0) {
1748 hour = ~hour;
1749 } else {
1750 minute = in.readByte();
1751 if (minute < 0) {
1752 minute = ~minute;
1753 } else {
1754 second = in.readByte();
1755 if (second < 0) {
1756 second = ~second;
1757 } else {
1758 nano = in.readInt();
1759 }
1760 }
1761 }
1762 return LocalTime.of(hour, minute, second, nano);
1763 }
1764
1765 }