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so I have two Instant from JAVA8, Instant time1 = Instant.parse("2020-11-03T11:35:02.510Z") Instant time2 = Instant.parse("2020-10-03T07:15:22.432Z") and I want to remove the date information in these two instants and only keep the time(which is hour, minute, second, and millisecond with the timezone) and compare them. May I know how to do that? Appreciate your help!

yueran zhang
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  • An `Instant` is a moment in time, and at that moment it is never the same date everywhere on Earth. So which date do you want? – Ole V.V. Nov 05 '20 at 03:42
  • Does this answer your question? [How to convert from Instant to LocalDate](https://stackoverflow.com/questions/52264768/how-to-convert-from-instant-to-localdate). I believe it would have been more helpful to close this question as a duplicate than as unclear. – Ole V.V. Nov 05 '20 at 03:44

1 Answers1

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Like this. But you will need to provide an appropriate ZoneId and of course any special formatting for the date. This uses LocalDate's toString() method.

Instant time1 = Instant.parse("2020-11-03T11:35:02.510Z");
LocalDate ld = LocalDate.ofInstant(time1,ZoneId.of("GMT"));
System.out.println(ld);

Since you have the String to parse, you could do it like this.

LocalDate ld1 = LocalDateTime.parse("2020-1103T11:35:02.510Z",
        DateTimeFormatter.ISO_OFFSET_DATE_TIME)
      .toLocalDate();

Prints

2020-11-03
WJS
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