Java - Convert ZonedDateTime to local and offset date, time and datetime representations

  1. HOME
  2. Java
  3. Date Time
  4. Zoned Datetime

Description

Convert ZonedDateTime to local and offset date, time and datetime representations

Demo

import java.time.Instant;
import java.time.LocalDateTime;
import java.time.Month;
import java.time.OffsetDateTime;
import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;

public class Main {
  public static void main(String[] args) {
    // Get the current zoned date time for the system default time zone
    ZonedDateTime zdt1 = ZonedDateTime.now();
    System.out.println("Current zoned datetime:" + zdt1);

    // Create a local date time
    LocalDateTime ldt = LocalDateTime.of(2012, Month.MARCH, 11, 7, 30);
    // Create some zoned date times
    ZoneId usCentralZone = ZoneId.of("America/Chicago");
    ZonedDateTime zdt2 = ZonedDateTime.of(ldt, usCentralZone);
    System.out.println(zdt2);/* w w  w .j av a  2 s .c o m*/

    // Get zone offset and zone id
    ZoneOffset offset = zdt2.getOffset();
    ZoneId zone = zdt2.getZone();
    System.out.println("Offset:" + offset + ", Zone:" + zone);

    // Subtract 10 hours. Zone-offset changes from -05:00 to -06:00
    ZonedDateTime zdt3 = zdt2.minusHours(10);
    System.out.println(zdt3);

    // Create a date time in Asia/Kolkata time zone
    ZoneId indiaKolkataZone = ZoneId.of("Asia/Kolkata");
    ZonedDateTime zdt4 = ZonedDateTime.of(ldt, indiaKolkataZone);
    System.out.println(zdt4);

    // Perform some conversions on zoned date time
    LocalDateTime ldt2 = zdt4.toLocalDateTime();
    OffsetDateTime odt = zdt4.toOffsetDateTime();
    Instant i1 = zdt4.toInstant();
    System.out.println("To local datetime: " + ldt2);
    System.out.println("To offset datetime: " + odt);
    System.out.println("To instant: " + i1);
  }
}

Result

Related Topic