Java ZonedDateTime Calculate toUTCZonedDateTime(String dateString)

Description

Converts any valid ZonedDateTime String (ISO_8601) representation to a UTC ZonedDateTime

e.g.

License

Open Source License

Parameter

Parameter	Description
dateString	e.g.

Return

@ZonedDateTime instance represented by dateString in UTC ("Z") or if the dateString does not represent a valid ISO_8601 zone string

Declaration

public static Optional<ZonedDateTime> toUTCZonedDateTime(String dateString)

Method Source Code


//package com.java2s;
//License from project: Open Source License 

import java.time.ZoneId;

import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;
import java.util.Optional;

public class Main {
    private static final ZoneId UTC = ZoneId.of("Z");
    private static DateTimeFormatter dateTimeFormatterAny = DateTimeFormatter.ISO_ZONED_DATE_TIME;

    /**// ww w  . ja  va 2s .  c  om
     * Converts any valid ZonedDateTime String (ISO_8601) representation to a UTC ZonedDateTime
     * <p>
     * e.g. <br/>
     * 1. 2010-01-01T12:00:00+01:00[Europe/Paris] ==>  ZonedDateTime("2010-12-31T22:59:59.132Z") <br/>
     * 2. 2010-12-31T22:59:59.132Z ==>  ZonedDateTime("2010-12-31T22:59:59.132Z") <br/>
     * </p>
     *
     * @param dateString e.g.
     * @return @ZonedDateTime instance represented by dateString in UTC ("Z") or
     * @Optional.empty() if the dateString does not represent a valid ISO_8601 zone string
     * @see "https://docs.oracle.com/javase/8/docs/api/java/time/ZonedDateTime.html"
     */
    public static Optional<ZonedDateTime> toUTCZonedDateTime(String dateString) {
        try {
            ZonedDateTime utcDateTime = ZonedDateTime.parse(dateString, dateTimeFormatterAny)
                    .withZoneSameInstant(UTC);
            return Optional.of(utcDateTime);
        } catch (DateTimeParseException ex) {
            return Optional.empty();
        }
    }
}