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Tag: datetime

Remaining days taking one date as a reference in Java

I have a variable of type LocalDateTime which has a date stored, for example 14/03/2020. I would like to know how I can get the days remaining to be again the 14th day of the month 3; in this case (from August 1, 2022), there are 225 days. I really have no idea how to get that value. Answer Determine

How to parse this date/time in Java/Kotlin?

I have this NMEA timestamp: 120722202122 and I want to parse it. I tried Playground but I get an Exception: I don’t know what the Exception wants to tell me or what my pattern should look like. Answer I assume you’ve probably meant the day of the month d, not the day of the year D. In your pattern, you’ve

Convert date format in springboot using java8

I receive the following date format How can I convert it into the following format in java 8 Answer You can use Java 8’s date/time API, and more precisely the DateTimeFormatter. There’s no pre-defined formatter that matches your initial input. The closest is DateTimeFormatter.RFC_1123_DATE_TIME, but it requires a comma after the day of the week. To solve that, you can

Is there a way to represent BC dates with

Yes, I understand that java.util.Date is extremely outdated. That being said, is there a way to represent dates before 1 CE using this class, or must I migrate to a different class? Answer Trivially, no. There is no way to represent dates with java.util.Date at all. Any date. j.u.Date is a misnomer, and is obsolete API you should not be

how to handle date comparison in Java during daylight saving?

Not to run code at 5:30 Morning in Summer and not to run code on 6:30 in winter. In Java Code, Applied following but now winter comes and we need not not run it at 6:30 AM How to handle this use case for daylight saving areas? Answer You can use TimeZone’s inDaylightTime() method to determine if day light saving

change offset without changing local time

I have a date that is in IST format. Which is something like the I have the following code for the above output startOfDay is just and extenstion function which is something like this But, what the backend really wants is in the below format with -8:00. Is there any way I can format it to have -08:00 in the

How to convert Date string into UTC Date object?

I’m learning Java and come across this issue. I have a date string with the given format. Now I wanted to initialize/create a Date object of UTC timezone. For this, I have tried below code This will convert the time into UTC instead of just creating a date object. Now I’m confused as to which is the correct approach to

Java Calendar clear() changes DST

First, I want to state that I know the Java Calendar class is being supplanted by other libraries that are arguably better. Perhaps I’ve stumbled upon one of the reasons Calendar has fallen out of favor. I ran into frustrating behavior in Calendar as it regards to the overlapping hour at the end of daylight savings time. Following along with