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
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);
|
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, mutexes, 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 ThaiBuddistDate} is a {@linkplain Class#isValue value class}.
102 * Use of value class instances for synchronization, mutexes, 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 @jdk.internal.MigratedValueClass
115 public final class ThaiBuddhistDate
116 extends ChronoLocalDateImpl<ThaiBuddhistDate>
117 implements ChronoLocalDate, Serializable {
118
119 /**
120 * Serialization version.
121 */
122 @java.io.Serial
123 private static final long serialVersionUID = -8722293800195731463L;
124
125 /**
126 * The underlying date.
127 */
128 private final transient LocalDate isoDate;
129
130 //-----------------------------------------------------------------------
131 /**
132 * Obtains the current {@code ThaiBuddhistDate} from the system clock in the default time-zone.
133 * <p>
134 * This will query the {@link Clock#systemDefaultZone() system clock} in the default
471 }
472
473 /**
474 * A hash code for this date.
475 *
476 * @return a suitable hash code based only on the Chronology and the date
477 */
478 @Override // override for performance
479 public int hashCode() {
480 return getChronology().getId().hashCode() ^ isoDate.hashCode();
481 }
482
483 //-----------------------------------------------------------------------
484 /**
485 * Defend against malicious streams.
486 *
487 * @param s the stream to read
488 * @throws InvalidObjectException always
489 */
490 @java.io.Serial
491 @SuppressWarnings("serial") // this method is not invoked for value classes
492 private void readObject(ObjectInputStream s) throws InvalidObjectException {
493 throw new InvalidObjectException("Deserialization via serialization delegate");
494 }
495
496 /**
497 * Writes the object using a
498 * <a href="{@docRoot}/serialized-form.html#java.time.chrono.Ser">dedicated serialized form</a>.
499 * @serialData
500 * <pre>
501 * out.writeByte(10); // identifies a ThaiBuddhistDate
502 * out.writeInt(get(YEAR));
503 * out.writeByte(get(MONTH_OF_YEAR));
504 * out.writeByte(get(DAY_OF_MONTH));
505 * </pre>
506 *
507 * @return the instance of {@code Ser}, not null
508 */
509 @java.io.Serial
510 private Object writeReplace() {
511 return new Ser(Ser.THAIBUDDHIST_DATE_TYPE, this);
|