1 /*
2 * Copyright (c) 2012, 2023, 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
75 import java.time.ZoneId;
76 import java.time.temporal.ChronoField;
77 import java.time.temporal.TemporalAccessor;
78 import java.time.temporal.TemporalAdjuster;
79 import java.time.temporal.TemporalAmount;
80 import java.time.temporal.TemporalField;
81 import java.time.temporal.TemporalQuery;
82 import java.time.temporal.TemporalUnit;
83 import java.time.temporal.UnsupportedTemporalTypeException;
84 import java.time.temporal.ValueRange;
85 import java.util.Objects;
86
87 /**
88 * A date in the Thai Buddhist calendar system.
89 * <p>
90 * This date operates using the {@linkplain ThaiBuddhistChronology Thai Buddhist calendar}.
91 * This calendar system is primarily used in Thailand.
92 * Dates are aligned such that {@code 2484-01-01 (Buddhist)} is {@code 1941-01-01 (ISO)}.
93 * <p>
94 * This is a <a href="{@docRoot}/java.base/java/lang/doc-files/ValueBased.html">value-based</a>
95 * class; programmers should treat instances that are
96 * {@linkplain #equals(Object) equal} as interchangeable and should not
97 * use instances for synchronization, or unpredictable behavior may
98 * occur. For example, in a future release, synchronization may fail.
99 * The {@code equals} method should be used for comparisons.
100 *
101 * @implSpec
102 * This class is immutable and thread-safe.
103 *
104 * @since 1.8
105 */
106 @jdk.internal.ValueBased
107 public final class ThaiBuddhistDate
108 extends ChronoLocalDateImpl<ThaiBuddhistDate>
109 implements ChronoLocalDate, Serializable {
110
111 /**
112 * Serialization version.
113 */
114 @java.io.Serial
115 private static final long serialVersionUID = -8722293800195731463L;
116
117 /**
118 * The underlying date.
119 */
120 private final transient LocalDate isoDate;
121
122 //-----------------------------------------------------------------------
123 /**
124 * Obtains the current {@code ThaiBuddhistDate} from the system clock in the default time-zone.
125 * <p>
126 * This will query the {@link Clock#systemDefaultZone() system clock} in the default
127 * time-zone to obtain the current date.
463 }
464
465 /**
466 * A hash code for this date.
467 *
468 * @return a suitable hash code based only on the Chronology and the date
469 */
470 @Override // override for performance
471 public int hashCode() {
472 return getChronology().getId().hashCode() ^ isoDate.hashCode();
473 }
474
475 //-----------------------------------------------------------------------
476 /**
477 * Defend against malicious streams.
478 *
479 * @param s the stream to read
480 * @throws InvalidObjectException always
481 */
482 @java.io.Serial
483 private void readObject(ObjectInputStream s) throws InvalidObjectException {
484 throw new InvalidObjectException("Deserialization via serialization delegate");
485 }
486
487 /**
488 * Writes the object using a
489 * <a href="{@docRoot}/serialized-form.html#java.time.chrono.Ser">dedicated serialized form</a>.
490 * @serialData
491 * <pre>
492 * out.writeByte(10); // identifies a ThaiBuddhistDate
493 * out.writeInt(get(YEAR));
494 * out.writeByte(get(MONTH_OF_YEAR));
495 * out.writeByte(get(DAY_OF_MONTH));
496 * </pre>
497 *
498 * @return the instance of {@code Ser}, not null
499 */
500 @java.io.Serial
501 private Object writeReplace() {
502 return new Ser(Ser.THAIBUDDHIST_DATE_TYPE, this);
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1 /*
2 * Copyright (c) 2012, 2026, 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
75 import java.time.ZoneId;
76 import java.time.temporal.ChronoField;
77 import java.time.temporal.TemporalAccessor;
78 import java.time.temporal.TemporalAdjuster;
79 import java.time.temporal.TemporalAmount;
80 import java.time.temporal.TemporalField;
81 import java.time.temporal.TemporalQuery;
82 import java.time.temporal.TemporalUnit;
83 import java.time.temporal.UnsupportedTemporalTypeException;
84 import java.time.temporal.ValueRange;
85 import java.util.Objects;
86
87 /**
88 * A date in the Thai Buddhist calendar system.
89 * <p>
90 * This date operates using the {@linkplain ThaiBuddhistChronology Thai Buddhist calendar}.
91 * This calendar system is primarily used in Thailand.
92 * Dates are aligned such that {@code 2484-01-01 (Buddhist)} is {@code 1941-01-01 (ISO)}.
93 * <p>
94 * This is a <a href="{@docRoot}/java.base/java/lang/doc-files/ValueBased.html">value-based</a>
95 * class; programmers should treat instances that are {@linkplain #equals(Object) equal}
96 * as interchangeable and should not use instances for synchronization or
97 * with {@linkplain java.lang.ref.Reference object references}.
98 *
99 * <div class="preview-block">
100 * <div class="preview-comment">
101 * When preview features are enabled, {@code ThaiBuddhistDate} is a {@linkplain Class#isValue value class}.
102 * Use of value class instances for synchronization or with
103 * {@linkplain java.lang.ref.Reference object references} result in
104 * {@link IdentityException}.
105 * </div>
106 * </div>
107 *
108 * @implSpec
109 * This class is immutable and thread-safe.
110 *
111 * @since 1.8
112 */
113 @jdk.internal.ValueBased
114 public final /*value*/ class ThaiBuddhistDate
115 extends ChronoLocalDateImpl<ThaiBuddhistDate>
116 implements ChronoLocalDate, Serializable {
117
118 /**
119 * Serialization version.
120 */
121 @java.io.Serial
122 private static final long serialVersionUID = -8722293800195731463L;
123
124 /**
125 * The underlying date.
126 */
127 private final transient LocalDate isoDate;
128
129 //-----------------------------------------------------------------------
130 /**
131 * Obtains the current {@code ThaiBuddhistDate} from the system clock in the default time-zone.
132 * <p>
133 * This will query the {@link Clock#systemDefaultZone() system clock} in the default
134 * time-zone to obtain the current date.
470 }
471
472 /**
473 * A hash code for this date.
474 *
475 * @return a suitable hash code based only on the Chronology and the date
476 */
477 @Override // override for performance
478 public int hashCode() {
479 return getChronology().getId().hashCode() ^ isoDate.hashCode();
480 }
481
482 //-----------------------------------------------------------------------
483 /**
484 * Defend against malicious streams.
485 *
486 * @param s the stream to read
487 * @throws InvalidObjectException always
488 */
489 @java.io.Serial
490 @SuppressWarnings("serial") // this method is not invoked for value classes
491 private void readObject(ObjectInputStream s) throws InvalidObjectException {
492 throw new InvalidObjectException("Deserialization via serialization delegate");
493 }
494
495 /**
496 * Writes the object using a
497 * <a href="{@docRoot}/serialized-form.html#java.time.chrono.Ser">dedicated serialized form</a>.
498 * @serialData
499 * <pre>
500 * out.writeByte(10); // identifies a ThaiBuddhistDate
501 * out.writeInt(get(YEAR));
502 * out.writeByte(get(MONTH_OF_YEAR));
503 * out.writeByte(get(DAY_OF_MONTH));
504 * </pre>
505 *
506 * @return the instance of {@code Ser}, not null
507 */
508 @java.io.Serial
509 private Object writeReplace() {
510 return new Ser(Ser.THAIBUDDHIST_DATE_TYPE, this);
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