package org.code2care.java.examples;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
public class JavaTimeZoneConverter {
public static void main(String[] args) {
DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss zzz");
LocalDateTime localDateTime = LocalDateTime.now();
ZoneId utcZone = ZoneId.of("UTC");
ZoneId targetZoneChicago = ZoneId.of("America/Chicago");
ZoneId targetZoneLondon = ZoneId.of("Europe/London");
ZoneId targetZoneNewYork = ZoneId.of("America/New_York");
ZonedDateTime convertedDateTimeUTC = ZonedDateTime.of(localDateTime, utcZone).withZoneSameInstant(utcZone);
ZonedDateTime convertedDateTimeChicago = ZonedDateTime.of(localDateTime, utcZone).withZoneSameInstant(targetZoneChicago);
ZonedDateTime convertedDateTimeLondon = ZonedDateTime.of(localDateTime, utcZone).withZoneSameInstant(targetZoneLondon);
ZonedDateTime convertedDateTimeNewYork = ZonedDateTime.of(localDateTime, utcZone).withZoneSameInstant(targetZoneNewYork);
System.out.println("UTC/GMT Time: " + convertedDateTimeUTC.format(dateTimeFormatter));
System.out.println("Chicago Time: " + convertedDateTimeChicago.format(dateTimeFormatter));
System.out.println("London Time: " + convertedDateTimeLondon.format(dateTimeFormatter));
System.out.println("New York Time: " + convertedDateTimeNewYork.format(dateTimeFormatter));
}
}
Output:
We have made use of the ZonedDateTime class, it allows to represent a date and time with a time zone.
We do the conversion using ZonedDateTime.of() with LocalDateTime object and the UTC time zone, and finally use withZoneSameInstant() to convert the date and time to the target time zone.
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Author Info:
Rakesh (He/Him) has over 14+ years of experience in Web and Application development. He is the author of insightful How-To articles for Code2care.
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