如何以毫秒为单位将日期转换为localDate？

Question

I'm trying to convert date Long 1581420629955L to LocalDate and then revert that.

To transform it in localDate, i use:

 final LocalDate localDate = Instant.ofEpochMilli(1581420629955L).atZone(ZoneId.of("UTC")).toLocalDate();

My localDate value is good => 2020-02-11

And Then, i revert that with:

final GregorianCalendar cal = new GregorianCalendar(localDate.getYear(), localDate.getMonthValue(), localDate.getDayOfMonth());
final Long cal.setTimeZone(TimeZone.getTimeZone("UTC"));
final Long timeMilli = cal.getTimeInMillis();

But my timeMilli is not equals to 1581420629955 . :(

How can i do that?

Thanks:D

Answer 1

According to OH GOD SPIDERS, i finally use localDate.atStartOfDay().toInstant(ZoneOffset.UTC).toEpochMilli() that solve my problem:D

Thanks for all yours responses !