Contoh menggunakan fungsi waktu datetime dari JDK8

Jdk8 telah dirilis, dan saya menulis contoh kecil tentang cara menggunakan fungsi waktu datetime

Salinan kode adalah sebagai berikut:

paket datetime;

impor statis java.time.temporal.temporaladjusters.lastdayofmonth;

impor statis java.time.temporal.temporaladjusters.previousorame;

impor java.time.dayofweek;

impor java.time.durasi;

impor java.time.localDate;

impor java.time.localdateTime;

impor java.time.localtime;

impor java.time.month;

impor java.time.offsetTime;

impor java.time.period;

impor java.time.zoneid;

impor java.time.zoneoffset;

impor java.time.zonedDateTime;

impor java.time.temporal.chronounit;

DataTimes kelas publik {

public static void main (string [] args) {

// Buat Objek Waktu

LocalDateTime timePoint = localDateTime.now ();

System.out.println ("-waktu saat ini ----");

System.out.println (TimePoint);

System.out.println ("");

System.out.println ("-Waktu Kustom ----");

System.out.println (localdate.of (2012, bulan. Desember, 12));

// nilai

System.out.println (localdate.ofepochday (150));

System.out.println (localtime.of (17, 18));

System.out.println (localtime.parse ("10:15:30"));

System.out.println ("");

System.out.println ("-Dapatkan berbagai bagian waktu ----");

System.out.println (TimePoint.TolocalDate ());

System.out.println (TimePoint.getMonth ());

System.out.println (TimePoint.getdayofmonth ());

System.out.println (TimePoint.GetSecond ());

System.out.println ("");

System.out.println ("--- atur dan kembalikan objek waktu baru ---");

LocalDateTime thepast = timePoint.withdayofonth (10) .withyear (2010);

System.out.println (ThePast);

System.out.println ("--- Tambahkan 3 minggu ---");

LocalDateTime yetanother = thepast.plusweeks (3) .plus (3,

Chronounit.weeks);

System.out.println (Yetanother);

System.out.println ("");

System.out.println ("--- Gunakan Fungsi Penyesuaian Waktu ---");

System.out.println (TimePoint);

System.out.println (TimePoint.with (lastdayofmonth ()));

System.out.println (TimePoint.with (Prewertorsame (DayOfWeek.Wednesday)));

System.out.println (TimePoint.with (localtime.now ()));

System.out.println ("");

System.out.println ("--- waktu terpotong bit yang tepat--");

System.out.println (TimePoint);

LocaldateTime truncatedTimetominutes = timepoint

.truncatedto (chronounit.minutes);

System.out.println (truncatedTimetominutes);

LocaldateTime truncatedTimetoseconds = timepoint

.truncatedto (chronounit.seconds);

System.out.println (truncatedTimetoseconds);

System.out.println ("");

System.out.println ("--- Gunakan zona waktu ---");

ZonedDateTime zoned_now = zonedDateTime.of (localDateTime.now (),

Zonaid.of ("UTC+08: 00"));

System.out

.println (zonaed_now.withzonesameInstant (zonaid.of ("UTC+00: 00"))));

System.out.println (zoned_now.getoffset ());

System.out.println ("");

System.out.println ("--- Offset zona waktu digunakan dalam waktu ---");

Waktu offsettime = offsettime.now ();

Offset zonaOffset = zoneOffset.of ("+02:00");

System.out.println (waktu);

System.out.println (time.withoffsetsameInstant (offset));

System.out.println ("");

System.out.println ("--- penambahan waktu dan pengurangan ---");

timePoint = localDateTime.now ();

System.out.println (TimePoint);

// 3 tahun, 2 bulan, 1 hari

Periode periode1 = periode.of (3, 2, 1);

System.out.println (TimePoint.plus (periode1));

Durasi durasi = durasi.

System.out.println (timepoint.plus (durasi));

Durasi enam jam = durasi.

ZonedDateTime.of (localDateTime.now (), zoneid.of ("UTC+08: 00")),

ZonedDateTime.of (localDateTime.now (), zonaid.of ("UTC+02: 00"))));

System.out.println (TimePoint.plus (Sixhours));

System.out.println ("");

}

}

Hasil berjalan

Salinan kode adalah sebagai berikut:

-Waktu Besar ---

2014-03-25T17: 03: 40.553

-Kustom Time ---

2012-12-12

1970-05-31

17:18

10:15:30

-Dapatkan berbagai bagian waktu ---

2014-03-25

BERBARIS

25

40

--- atur dan kembalikan objek waktu baru ---

2010-03-10T17: 03: 40.553

--- Tambahkan 3 minggu lagi ---

2010-04-21T17: 03: 40.553

--- Gunakan fungsi penyesuaian waktu ---

2014-03-25T17: 03: 40.553

2014-03-31T17: 03: 40.553

2014-03-19T17: 03: 40.553

2014-03-25t17: 03: 40.583

--- memotong waktu yang tepat-

2014-03-25T17: 03: 40.553

2014-03-25t17: 03

2014-03-25t17: 03: 40

--- Gunakan zona waktu ---

2014-03-25t09: 03: 40.583z [UTC]

+08: 00

--- Offset zona waktu digunakan dalam waktu ---

17: 03: 40.585+08: 00

11: 03: 40.585+02: 00

--- Tambahkan atau kurangi waktu ---

2014-03-25t17: 03: 40.585

2017-05-26T17: 03: 40.585

2014-03-25T17: 03: 43.585000005

2014-03-25T23: 03: 40.586