Examples of org.threeten.bp.ZonedDateTime

org.threeten.bp.ZonedDateTime
A date-time with a time-zone in the ISO-8601 calendar system, such as {@code 2007-12-03T10:15:30+01:00 Europe/Paris}.
{@code ZonedDateTime} is an immutable representation of a date-time with a time-zone.This class stores all date and time fields, to a precision of nanoseconds, and a time-zone, with a zone offset used to handle ambiguous local date-times. For example, the value "2nd October 2007 at 13:45.30.123456789 +02:00 in the Europe/Paris time-zone" can be stored in a {@code ZonedDateTime}.
This class handles conversion from the local time-line of {@code LocalDateTime}to the instant time-line of {@code Instant}. The difference between the two time-lines is the offset from UTC/Greenwich, represented by a {@code ZoneOffset}.
Converting between the two time-lines involves calculating the offset using the {@link ZoneRules rules} accessed from the {@code ZoneId}. Obtaining the offset for an instant is simple, as there is exactly one valid offset for each instant. By contrast, obtaining the offset for a local date-time is not straightforward. There are three cases:
- Normal, with one valid offset. For the vast majority of the year, the normal case applies, where there is a single valid offset for the local date-time.
- Gap, with zero valid offsets. This is when clocks jump forward typically due to the spring daylight savings change from "winter" to "summer". In a gap there are local date-time values with no valid offset.
- Overlap, with two valid offsets. This is when clocks are set back typically due to the autumn daylight savings change from "summer" to "winter". In an overlap there are local date-time values with two valid offsets.
Any method that converts directly or implicitly from a local date-time to an instant by obtaining the offset has the potential to be complicated.
For Gaps, the general strategy is that if the local date-time falls in the middle of a Gap, then the resulting zoned date-time will have a local date-time shifted forwards by the length of the Gap, resulting in a date-time in the later offset, typically "summer" time.
For Overlaps, the general strategy is that if the local date-time falls in the middle of an Overlap, then the previous offset will be retained. If there is no previous offset, or the previous offset is invalid, then the earlier offset is used, typically "summer" time.. Two additional methods, {@link #withEarlierOffsetAtOverlap()} and {@link #withLaterOffsetAtOverlap()}, help manage the case of an overlap.
Specification for implementors
A {@code ZonedDateTime} holds state equivalent to three separate objects,a {@code LocalDateTime}, a {@code ZoneId} and the resolved {@code ZoneOffset}. The offset and local date-time are used to define an instant when necessary. The zone ID is used to obtain the rules for how and when the offset changes. The offset cannot be freely set, as the zone controls which offsets are valid.
This class is immutable and thread-safe.

        assertEquals(test.isFixedOffset(), false);
    }


    public void test_London_preTimeZones() {
        ZoneRules test = europeLondon();
        ZonedDateTime old = createZDT(1800, 1, 1, ZoneOffset.UTC);
        Instant instant = old.toInstant();
        ZoneOffset offset = ZoneOffset.ofHoursMinutesSeconds(0, -1, -15);
        assertEquals(test.getOffset(instant), offset);
        checkOffset(test, old.toLocalDateTime(), offset, 1);
        assertEquals(test.getStandardOffset(instant), offset);
        assertEquals(test.getDaylightSavings(instant), Duration.ZERO);
        assertEquals(test.isDaylightSavings(instant), false);
    }

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        assertEquals(trans.hashCode(), otherTrans.hashCode());
    }


    public void test_London_getStandardOffset() {
        ZoneRules test = europeLondon();
        ZonedDateTime zdt = createZDT(1840, 1, 1, ZoneOffset.UTC);
        while (zdt.getYear() < 2010) {
            Instant instant = zdt.toInstant();
            if (zdt.getYear() < 1848) {
                assertEquals(test.getStandardOffset(instant), ZoneOffset.ofHoursMinutesSeconds(0, -1, -15));
            } else if (zdt.getYear() >= 1969 && zdt.getYear() < 1972) {
                assertEquals(test.getStandardOffset(instant), OFFSET_PONE);
            } else {
                assertEquals(test.getStandardOffset(instant), OFFSET_ZERO);
            }
            zdt = zdt.plusMonths(6);
        }
    }

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        ZoneOffsetTransition last = trans.get(trans.size() - 1);
        assertEquals(test.previousTransition(last.getInstant().plusSeconds(1)), last);
        assertEquals(test.previousTransition(last.getInstant().plusNanos(1)), last);


        // Jan 1st of year between transitions and rules
        ZonedDateTime odt = ZonedDateTime.ofInstant(last.getInstant(), last.getOffsetAfter());
        odt = odt.withDayOfYear(1).plusYears(1).with(LocalTime.MIDNIGHT);
        assertEquals(test.previousTransition(odt.toInstant()), last);


        // later years
        for (int year = 1998; year < 2010; year++) {
            ZoneOffsetTransition a = rules.get(0).createTransition(year);
            ZoneOffsetTransition b = rules.get(1).createTransition(year);

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        assertEquals(test.isFixedOffset(), false);
    }


    public void test_Paris_preTimeZones() {
        ZoneRules test = europeParis();
        ZonedDateTime old = createZDT(1800, 1, 1, ZoneOffset.UTC);
        Instant instant = old.toInstant();
        ZoneOffset offset = ZoneOffset.ofHoursMinutesSeconds(0, 9, 21);
        assertEquals(test.getOffset(instant), offset);
        checkOffset(test, old.toLocalDateTime(), offset, 1);
        assertEquals(test.getStandardOffset(instant), offset);
        assertEquals(test.getDaylightSavings(instant), Duration.ZERO);
        assertEquals(test.isDaylightSavings(instant), false);
    }

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        assertEquals(trans.hashCode(), otherTrans.hashCode());
    }


    public void test_Paris_getStandardOffset() {
        ZoneRules test = europeParis();
        ZonedDateTime zdt = createZDT(1840, 1, 1, ZoneOffset.UTC);
        while (zdt.getYear() < 2010) {
            Instant instant = zdt.toInstant();
            if (zdt.toLocalDate().isBefore(LocalDate.of(1911, 3, 11))) {
                assertEquals(test.getStandardOffset(instant), ZoneOffset.ofHoursMinutesSeconds(0, 9, 21));
            } else if (zdt.toLocalDate().isBefore(LocalDate.of(1940, 6, 14))) {
                assertEquals(test.getStandardOffset(instant), OFFSET_ZERO);
            } else if (zdt.toLocalDate().isBefore(LocalDate.of(1944, 8, 25))) {
                assertEquals(test.getStandardOffset(instant), OFFSET_PONE);
            } else if (zdt.toLocalDate().isBefore(LocalDate.of(1945, 9, 16))) {
                assertEquals(test.getStandardOffset(instant), OFFSET_ZERO);
            } else {
                assertEquals(test.getStandardOffset(instant), OFFSET_PONE);
            }
            zdt = zdt.plusMonths(6);
        }
    }

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        assertEquals(test.isFixedOffset(), false);
    }


    public void test_NewYork_preTimeZones() {
        ZoneRules test = americaNewYork();
        ZonedDateTime old = createZDT(1800, 1, 1, ZoneOffset.UTC);
        Instant instant = old.toInstant();
        ZoneOffset offset = ZoneOffset.of("-04:56:02");
        assertEquals(test.getOffset(instant), offset);
        checkOffset(test, old.toLocalDateTime(), offset, 1);
        assertEquals(test.getStandardOffset(instant), offset);
        assertEquals(test.getDaylightSavings(instant), Duration.ZERO);
        assertEquals(test.isDaylightSavings(instant), false);
    }

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        assertEquals(trans.hashCode(), otherTrans.hashCode());
    }


    public void test_NewYork_getStandardOffset() {
        ZoneRules test = americaNewYork();
        ZonedDateTime dateTime = createZDT(1860, 1, 1, ZoneOffset.UTC);
        while (dateTime.getYear() < 2010) {
            Instant instant = dateTime.toInstant();
            if (dateTime.toLocalDate().isBefore(LocalDate.of(1883, 11, 18))) {
                assertEquals(test.getStandardOffset(instant), ZoneOffset.of("-04:56:02"));
            } else {
                assertEquals(test.getStandardOffset(instant), ZoneOffset.ofHours(-5));
            }
            dateTime = dateTime.plusMonths(6);
        }
    }

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    protected StringBuilder buf;


    @BeforeMethod
    public void setUp() {
        printEmptyContext = new DateTimePrintContext(EMPTY, Locale.ENGLISH, DecimalStyle.STANDARD);
        ZonedDateTime zdt = LocalDateTime.of(2011, 6, 30, 12, 30, 40, 0).atZone(ZoneId.of("Europe/Paris"));
        printContext = new DateTimePrintContext(zdt, Locale.ENGLISH, DecimalStyle.STANDARD);
        parseContext = new DateTimeParseContext(Locale.ENGLISH, DecimalStyle.STANDARD, IsoChronology.INSTANCE);
        buf = new StringBuilder();
    }

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    //-----------------------------------------------------------------------
    // Test Serialization of ISO via chrono API
    //-----------------------------------------------------------------------
    @Test( dataProvider="calendars")
    public void test_ChronoZonedDateTimeSerialization(Chronology chrono) throws Exception {
        ZonedDateTime ref = LocalDate.of(2000, 1, 5).atTime(12, 1, 2, 3).atZone(ZoneId.of("GMT+01:23"));
        ChronoZonedDateTime<?> orginal = chrono.date(ref).atTime(ref.toLocalTime()).atZone(ref.getZone());
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream out = new ObjectOutputStream(baos);
        out.writeObject(orginal);
        out.close();
        ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());

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  @Override
  public FRASecurity createSecurity(final OperationContext context, FRASecurityBean bean) {
    Currency currency = currencyBeanToCurrency(bean.getCurrency());
    ExternalId regionId = externalIdBeanToExternalId(bean.getRegion());
    ZonedDateTime startDate = zonedDateTimeBeanToDateTimeWithZone(bean.getStartDate());
    ZonedDateTime endDate = zonedDateTimeBeanToDateTimeWithZone(bean.getEndDate());
    double rate = bean.getRate();
    double amount = bean.getAmount();
    ExternalId underlyingId = externalIdBeanToExternalId(bean.getUnderlying());
    ZonedDateTime fixingDate = zonedDateTimeBeanToDateTimeWithZone(bean.getFixingDate());
    return new FRASecurity(currency, regionId, startDate, endDate, rate, amount, underlyingId, fixingDate);
  }

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Examples of org.threeten.bp.ZonedDateTime

Specification for implementors

Related Classes of org.threeten.bp.ZonedDateTime