Examples of org.goda.time.DateTime

org.goda.time.DateTime
DateTime is the standard implementation of an unmodifiable datetime class.
DateTime is the most widely used implementation of {@link ReadableInstant}. As with all instants, it represents an exact point on the time-line, but limited to the precision of milliseconds. A DateTime calculates its fields with respect to a {@link DateTimeZone time zone}.
Internally, the class holds two pieces of data. Firstly, it holds the datetime as milliseconds from the Java epoch of 1970-01-01T00:00:00Z. Secondly, it holds a {@link Chronology} which determines how themillisecond instant value is converted into the date time fields. The default Chronology is {@link ISOChronology} which is the agreedinternational standard and compatible with the modern Gregorian calendar.
Each individual field can be queried in two ways:
- getHourOfDay()
- hourOfDay().get()
The second technique also provides access to other useful methods on the field:
- numeric value
- text value
- short text value
- maximum/minimum values
- add/subtract
- set
- rounding
DateTime is thread-safe and immutable, provided that the Chronology is as well. All standard Chronology classes supplied are thread-safe and immutable. @author Stephen Colebourne @author Kandarp Shah @author Brian S O'Neill @since 1.0 @see MutableDateTime

  @Override
  protected MutableInterval _thisMutableInterval(PointerType pointer) {
    MutableInterval thisMutableInterval;
    if (pointer == Pointer.PointerType.FUTURE || pointer == Pointer.PointerType.NONE) {
      RepeaterDayName saturdayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SATURDAY);
      saturdayRepeater.setStart(new DateTime(getNow()));
      MutableInterval thisSaturdayMutableInterval = saturdayRepeater.nextMutableInterval(Pointer.PointerType.FUTURE);
      thisMutableInterval = new MutableInterval(thisSaturdayMutableInterval.getStart(), Time.cloneAndAdd(thisSaturdayMutableInterval.getStart(), Time.SECOND, RepeaterWeekend.WEEKEND_SECONDS));
    }
    else if (pointer == Pointer.PointerType.PAST) {
      RepeaterDayName saturdayRepeater = new RepeaterDayName(RepeaterDayName.DayName.SATURDAY);
      saturdayRepeater.setStart( new DateTime( getNow()));
      MutableInterval lastSaturdayMutableInterval = saturdayRepeater.nextMutableInterval(Pointer.PointerType.PAST);
      thisMutableInterval = new MutableInterval(lastSaturdayMutableInterval.getStart(), Time.cloneAndAdd(lastSaturdayMutableInterval.getStart(), Time.SECOND, RepeaterWeekend.WEEKEND_SECONDS));
    }
    else {
      throw new IllegalArgumentException("Unable to handle pointer " + pointer + ".");

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  @Override
  public MutableInterval getOffset(MutableInterval span, double amount, PointerType pointer) {
    int direction = (pointer == Pointer.PointerType.FUTURE) ? 1 : -1;
    RepeaterWeekend weekend = new RepeaterWeekend();
    weekend.setStart(span.getStart());
    DateTime start = Time.cloneAndAdd(weekend.nextMutableInterval(pointer).getStart(), Time.SECOND, (int) ((amount - 1) * direction * RepeaterWeek.WEEK_SECONDS));
    return new MutableInterval(start, Time.cloneAndAdd(start, Time.SECOND, Time.getWidth(span)));
  }

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            if (chrono == null) {
                if (zone == DateTimeZone.UTC) {
                    // First create without a lower limit.
                    chrono = new CopticChronology(null, null, minDaysInFirstWeek);
                    // Impose lower limit and make another CopticChronology.
                    DateTime lowerLimit = new DateTime(1, 1, 1, 0, 0, 0, 0, chrono);
                    chrono = new CopticChronology
                        (LimitChronology.getInstance(chrono, lowerLimit, null),
                         null, minDaysInFirstWeek);
                } else {
                    chrono = getInstance(DateTimeZone.UTC, minDaysInFirstWeek);

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        if (zone == DateTimeZone.UTC && iWithUTC != null) {
            return iWithUTC;
        }


        DateTime lowerLimit = iLowerLimit;
        if (lowerLimit != null) {
            MutableDateTime mdt = lowerLimit.toMutableDateTime();
            mdt.setZoneRetainFields(zone);
            lowerLimit = mdt.toDateTime();
        }


        DateTime upperLimit = iUpperLimit;
        if (upperLimit != null) {
            MutableDateTime mdt = upperLimit.toMutableDateTime();
            mdt.setZoneRetainFields(zone);
            upperLimit = mdt.toDateTime();
        }
        
        LimitChronology chrono = getInstance

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        converted.put(field, limitField);
        return limitField;
    }


    void checkLimits(long instant, String desc) {
        DateTime limit;
        if ((limit = iLowerLimit) != null && instant < limit.getMillis()) {
            throw new LimitException(desc, true);
        }
        if ((limit = iUpperLimit) != null && instant >= limit.getMillis()) {
            throw new LimitException(desc, false);
        }
    }

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            if (chrono == null) {
                if (zone == DateTimeZone.UTC) {
                    // First create without a lower limit.
                    chrono = new IslamicChronology(null, null, leapYears);
                    // Impose lower limit and make another IslamicChronology.
                    DateTime lowerLimit = new DateTime(1, 1, 1, 0, 0, 0, 0, chrono);
                    chrono = new IslamicChronology(
                        LimitChronology.getInstance(chrono, lowerLimit, null),
                         null, leapYears);
                } else {
                    chrono = getInstance(DateTimeZone.UTC, leapYears);

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            if (chrono == null) {
                if (zone == DateTimeZone.UTC) {
                    // First create without a lower limit.
                    chrono = new EthiopicChronology(null, null, minDaysInFirstWeek);
                    // Impose lower limit and make another EthiopicChronology.
                    DateTime lowerLimit = new DateTime(1, 1, 1, 0, 0, 0, 0, chrono);
                    chrono = new EthiopicChronology
                        (LimitChronology.getInstance(chrono, lowerLimit, null),
                         null, minDaysInFirstWeek);
                } else {
                    chrono = getInstance(DateTimeZone.UTC, minDaysInFirstWeek);

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     * Get this object as a DateTime in the same zone.
     *
     * @return a DateTime using the same millis
     */
    public DateTime toDateTime() {
        return new DateTime(getMillis(), getZone());
    }

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     * Get this object as a DateTime using ISOChronology in the same zone.
     *
     * @return a DateTime using the same millis with ISOChronology
     */
    public DateTime toDateTimeISO() {
        return new DateTime(getMillis(), ISOChronology.getInstance(getZone()));
    }

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     * @return a DateTime using the same millis
     */
    public DateTime toDateTime(DateTimeZone zone) {
        Chronology chrono = DateTimeUtils.getChronology(getChronology());
        chrono = chrono.withZone(zone);
        return new DateTime(getMillis(), chrono);
    }

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