Tag: datetime

DateTimeFormatter – Strict vs Lenient unexpected behaviour

I have some text that is only being parsed by a DateTimeFormatter when the parse style is Strict – and not when it’s Lenient. This seems like the opposite behaviour to what I’d expect? Example: Output: Answer Having posted this as a bug – https://bugs.java.com/bugdatabase/view_bug.do?b…

How to parse time based tokens in java ?(1m 1M 1d 1Y 1W 1S)

datetime duration java localdate

I gets following strings from FE: It corresponds to 1 minute, 5 months,3 days, 30 minutes, 2 hours, 1 year, 3 weeks. Is there mean in java to parse it? I want to manipulate(add/minus) with Instant(or LocalDatetTime). Is there way to do it in java? Answer Period & Duration I consider the following solution…

Convert String to LocalDate

datetime java joda-convert jodatime

I want to convert 21022019 to 2019-02-21, but some reason I am not able to convert. import org.joda.time.LocalDate; import org.joda.time.LocalDateTime; import org.joda.time.format.DateTimeFormat; …

Convert Long to DateTime from C# Date to Java Date

binary c++ datetime java

I’ve been trying to read the binary file with Java, and the binary file is written in C#. And some of those data is contain a DateTime data. When DateTime data will be written into the file (in binary), it using DateTime.ToBinary(); on C#. For reading the DateTime data, it will convert first from bytes …

Issue Converting seconds to HH:MM:SS java

date datetime java long-integer time

I have a long variable which represents the downtime of an application in seconds. I want to display the downtime as HH:mm:ss When passing the long variable to the Date I multiplied it 1000 to get the millisecond value. The newD variable evaluates to Thu Jan 01 01:12:35 GMT 1970 The value of newD is off by 1 …

Convert string to date (CEST works fine, GMT+02:00 doesn’t work)

android datetime datetime-parsing java

Question Why is my Android app unable to parse String str1= “Tue Jun 20 15:56:29 CEST 2017”? I found some similar questions, but none of them helped me. Sidenotes In my project I have some Java applications which are running on a computer and some Android applications. They are able to communicate…

How to sort a list of months with years

arrays date datetime java time

I have a list of months with years such as: [12-2014,11-2012,5-2014,8-2012] and I have to sort them with the most recent on top (or the latest date on top) eg. [12-2014,5-2014,11-2012,8-2012] . Does anybody have any idea on how to do this in Java efficiently? EDIT: The class YearMonth is not available, I&#821…

Add interval to a datetime

datetime java

I want to achieve a similar operation in java: What’s the best approach to express this in Java given the following constraints: The datetime is a formated string. The interval is an integer. The calculated time should be also a datetime formatted string. Answer You should work with “Date” o…

How to get current timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss”

date datetime java timestamp

How to get timestamp in string format in Java? “yyyy.MM.dd.HH.mm.ss” This is what I have, but Timestamp() requires an parameters… Answer Replace with because there is no default constructor for Timestamp, or you can do it with the method:

Convert java.util.Date to java.time.LocalDate

datetime java java-8 java-time

What is the best way to convert a java.util.Date object to the new JDK 8/JSR-310 java.time.LocalDate? Answer Short answer Explanation Despite its name, java.util.Date represents an instant on the time-line, not a “date”. The actual data stored within the object is a long count of milliseconds sinc…