Packages

•  package root

  Definition Classes

  root

•  package java

  Definition Classes

  root

•  package time

  The main API for dates, times, instants, and durations.

  The main API for dates, times, instants, and durations.

  The classes defined here represent the principal date-time concepts, including instants, durations, dates, times, time-zones and periods. They are based on the ISO calendar system, which is the de facto world calendar following the proleptic Gregorian rules. All the classes are immutable and thread-safe.

  Each date time instance is composed of fields that are conveniently made available by the APIs. For lower level access to the fields refer to the org.threeten.bp.temporal package. Each class includes support for printing and parsing all manner of dates and times. Refer to the org.threeten.bp.format package for customization options.

  The org.threeten.bp.chrono package contains the calendar neutral API. This is intended for use by applications that need to use localized calendars. It is recommended that applications use the ISO-8601 dates and time classes from this package across system boundaries, such as to the database or across the network. The calendar neutral API should be reserved for interactions with users.

  Dates and Times

  org.threeten.bp.Instant is essentially a numeric timestamp. The current Instant can be retrieved from a org.threeten.bp.Clock. This is useful for logging and persistence of a point in time and has in the past been associated with storing the result from java.lang.System#currentTimeMillis().

  org.threeten.bp.LocalDate stores a date without a time. This stores a date like '2010-12-03' and could be used to store a birthday.

  org.threeten.bp.LocalTime stores a time without a date. This stores a time like '11:30' and could be used to store an opening or closing time.

  org.threeten.bp.LocalDateTime stores a date and time. This stores a date-time like '2010-12-03T11:30'.

  org.threeten.bp.OffsetTime stores a time and offset from UTC without a date. This stores a date like '11:30+01:00'. The ZoneOffset is of the form '+01:00'.

  org.threeten.bp.OffsetDateTime stores a date and time and offset from UTC. This stores a date-time like '2010-12-03T11:30+01:00'. This is sometimes found in XML messages and other forms of persistence, but contains less information than a full time-zone.

  org.threeten.bp.ZonedDateTime stores a date and time with a time-zone. This is useful if you want to perform accurate calculations of dates and times taking into account the org.threeten.bp.ZoneId, such as 'Europe/Paris'. Where possible, it is recommended to use a simpler class. The widespread use of time-zones tends to add considerable complexity to an application.

  Duration and Period

  Beyond dates and times, the API also allows the storage of period and durations of time. A org.threeten.bp.Duration is a simple measure of time along the time-line in nanoseconds. A org.threeten.bp.Period expresses an amount of time in units meaningful to humans, such as years or hours.

  Additional value types

  org.threeten.bp.Year stores a year on its own. This stores a single year in isolation, such as '2010'.

  org.threeten.bp.YearMonth stores a year and month without a day or time. This stores a year and month, such as '2010-12' and could be used for a credit card expiry.

  org.threeten.bp.MonthDay stores a month and day without a year or time. This stores a month and day-of-month, such as '--12-03' and could be used to store an annual event like a birthday without storing the year.

  org.threeten.bp.Month stores a month on its own. This stores a single month-of-year in isolation, such as 'DECEMBER'.

  org.threeten.bp.DayOfWeek stores a day-of-week on its own. This stores a single day-of-week in isolation, such as 'TUESDAY'.

  Definition Classes

  java

•  package chrono

  Support for calendar systems other than the default ISO.

  Support for calendar systems other than the default ISO.

  The main API is based around the calendar system defined in ISO-8601. This package provides support for alternate systems.

  The supported calendar systems includes:

  -Hijrah calendar -Japanese calendar -Minguo calendar -Thai Buddhist calendar

  It is intended that applications use the main API whenever possible, including code to read and write from a persistent data store, such as a database, and to send dates and times across a network. This package is then used at the user interface level to deal with localized input/output. See ChronoLocalDate for a full discussion of the issues.

  Example

  This example creates and uses a date in a non-ISO calendar system.

          // Print the Thai Buddhist date
          ChronoLocalDate now1 = ThaiBuddhistChronology.INSTANCE.now();
          int day = now1.get(ChronoField.DAY_OF_MONTH);
          int dow = now1.get(ChronoField.DAY_OF_WEEK);
          int month = now1.get(ChronoField.MONTH_OF_YEAR);
          int year = now1.get(ChronoField.YEAR);
          System.out.printf("  Today is %s %s %d-%s-%d%n", now1.getChronology().getId(),
                  dow, day, month, year);
  
          // Enumerate the list of available calendars and print today for each
          Set<String> names = Chronology.getAvailableIds();
          for (String name : names) {
              Chronology<?> chrono = Chronology.of(name);
              ChronoLocalDate<?> date = chrono.now();
              System.out.printf("   %20s: %s%n", chrono.getId(), date.toString());
          }
  
          // Print today's date and the last day of the year for the Thai Buddhist Calendar.
          ChronoLocalDate first = now1
                  .with(ChronoField.DAY_OF_MONTH, 1)
                  .with(ChronoField.MONTH_OF_YEAR, 1);
          ChronoLocalDate last = first
                  .plus(1, ChronoUnit.YEARS)
                  .minus(1, ChronoUnit.DAYS);
          System.out.printf("  %s: 1st of year: %s; end of year: %s%n", last.getChronology().getId(),
                  first, last);
  

  Definition Classes

  time

•  package internal

  Definition Classes

  chrono

• AbstractChronology
• ChronoDateImpl
• ChronoLocalDate
• ChronoLocalDateTime
• ChronoLocalDateTimeImpl
• ChronoPeriod
• ChronoPeriodImpl
• ChronoZonedDateTime
• ChronoZonedDateTimeImpl
• Chronology
• Era
• HijrahChronology
• HijrahDate
• HijrahDateConfigurator
• HijrahEra
• IsoChronology
• IsoEra
• JapaneseChronology
• JapaneseDate
• JapaneseEra
• MinguoChronology
• MinguoDate
• MinguoEra
• Ser
• ThaiBuddhistChronology
• ThaiBuddhistDate
• ThaiBuddhistEra

java.time.chrono

Chronology

Companion trait Chronology