How to convert Date to LocalTime?

Question

I'm trying to convert a

Date

to a

LocalTime

(I only want the hours and minutes of the date) but it's not working out. I first looked here date-to-java-time and try to convert a

Date

to

LocalTime

but that didn't work so I tried to convert

Date

to

Calendar

and then convert

Calendar

to

Date

but that also didn't work.

I think it is because

date

stores the time in

fasttime

instead of

cdate

. But that's just a gut feeling. Here's my code:

//create the date

String strTime ="2011-02-18 05:00:00.0";

Date date = format.parse(strTime);    



//convert to calendar

Calendar cal = Calendar.getInstance();

cal.setTime(date);



//convert the date to a local time

Instant instant = Instant.ofEpochMilli(cal.getTimeInMillis());

LocalTime convert = LocalDateTime.ofInstant(instant, ZoneId.systemDefault()).toLocalTime();

I don't get a compile error but the

LocalTime

his hours aren't set and stay

0

.

Answer 1

Your input is effectively a LocalDateTime. It would be much simpler to simply parse that to a LocalDateTime and then get the LocalTime from that. No time zones to worry about, no somewhat-legacy classes (avoid Date and Calendar where possible...)

import java.time.*;
import java.time.format.*;
import java.util.*;

public class Test {

    public static void main(String[] args) {
        DateTimeFormatter formatter =
            DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss.S", Locale.US);

        String text = "2011-02-18 05:00:00.0";
        LocalDateTime localDateTime = LocalDateTime.parse(text, formatter);
        LocalTime localTime = localDateTime.toLocalTime();
        System.out.println(localTime);
    }
}

How to convert Date to LocalTime?

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