How do I convert time zones using Java 8's Date-Time API?

How do I convert time zones using Java 8's Date-Time API?

You can use the ZonedDateTime class to convert between time zones. First, create a ZonedDateTime object for the original time zone, then use the withZoneSameInstant() method to convert it.

Can you show me a code example for that?

Sure! Here's a simple example:

import java.time.ZonedDateTime;
import java.time.ZoneId;

public class TimeZoneConversion {
    public static void main(String[] args) {
        ZonedDateTime originalTime = ZonedDateTime.now(ZoneId.of("America/New_York"));
        ZonedDateTime convertedTime = originalTime.withZoneSameInstant(ZoneId.of("Europe/London"));
        System.out.println("Original Time: " + originalTime);
        System.out.println("Converted Time: " + convertedTime);
    }
}

What if I want to convert a specific date and time?

You can create a ZonedDateTime object with a specific date and time using the of() method. For example:

ZonedDateTime specificTime = ZonedDateTime.of(2023, 10, 1, 10, 0, 0, 0, ZoneId.of("America/New_York"));
ZonedDateTime convertedSpecificTime = specificTime.withZoneSameInstant(ZoneId.of("Europe/London"));

Are there any other classes I should be aware of in the Date-Time API?

Yes, besides ZonedDateTime, you might find LocalDateTime, LocalDate, and LocalTime useful for handling date and time without time zone information.