I need a solution to return day (Monday,Tuesday…), when i have inputs like YEAR, MONTH, DATE. Answer Using the parameters, create a LocalDate from which you can get the weekday. Output: Learn more about the the the modern date-time API* from Trail: Date Time. * For any reason, if you have to stick to Java 6 or Java 7, you
Tag: calendar
Calculate time from date taken with different timezone
I have a MySQL database which is storing a datetime value, let’s say 2020-10-11 12:00:00. (yyyy-mm-dd hh:mm:ss format) The type of this date (in mysql) is DATETIME When I retrieve this data in my controller, it has the java 7 type “Date”. But it adds a timezone CEST due to my locale I suspect. Here I already find confusing that
Algorithm to create X number of dates
Currently I have a list of Strings that represent a date in a yyyyMM format, something like this: 202008 202009 202010 I need to create x number of entries in this list with each entry increasing …
Java: Order a list of Objects based on Calendar date?
I have a list of Java Objects that all contain the following field: I want to order the list of objects based on the above field , the object with date field most recent first. What is the best way to do so? Answer You can use Comparator.comparing, suppose you have List<Entity> then you can do this way
Java Calendar not giving end of hour
Based on Epoch seconds, I convert it to the start of hour and end of hour. long epochSeconds = 1589374800L; Instant instant = Instant.ofEpochSecond(epochSeconds); Calendar now = Calendar….
Can I add seconds to current date without using Calendar Library in Java?
I want to get the current time in Java, and now I want to add 15 seconds above the time. Can I do this with a library other than the Calendar library in java? import java.util.Calendar; public …
Kotlin (null cannot be cast to non-null type) Custom Calendar Implementation
I am trying to use the library https://github.com/kizitonwose/CalendarView (which was made in Kotlin) in Java. In this library there is an example to select a date. In the example, it had shown to do this: After trying to replicate this in my own android project, I wrote this: When my fragment launches, it calls the selectDate() method with today’s date
How can I Convert Calendar.toString() into date using SimpleDateFormat.parse()?
I’m developing an Android app that uses a database, every time that the user insert a new register the current data and time is save in the db using So, When I retrieve the data from the db, got a String like this: java.util.GregorianCalendar[time=1496007575129,areFieldsSet=true,lenient=true,zone=America/Mexico_City,firstDayOfWeek=1,minimalDaysInFirstWeek=1,ERA=1,YEAR=2017,MONTH=4,WEEK_OF_YEAR=22,WEEK_OF_MONTH=5,DAY_OF_MONTH=28,DAY_OF_YEAR=148,DAY_OF_WEEK=1,DAY_OF_WEEK_IN_MONTH=4,AM_PM=1,HOUR=4,HOUR_OF_DAY=16,MINUTE=39,SECOND=35,MILLISECOND=129,ZONE_OFFSET=-21600000,DST_OFFSET=3600000] The problem comes when I try convert that String using SimpleDateFormat.parse to display it in a
Send invites with google calendar API
I have a Java Spring API where I want to integrate Google Calendar. The task: Basically creating an event for two attendees (users) and send them an invite with the option to accept/decline (standard GCalendar invite) I tried this example here: https://developers.google.com/google-apps/calendar/quickstart/java But I think this is not the right one since I authenticate as a user – or do
How to format date/time string? (Java)
Hi can anyone help please? I am trying to format a date and time string. Currently it looks like this “20160112T110000Z” and I need it to be “2016-01-12T11:00:00Z” The string without the special characters are returned from a 3rd party recurrence library. I need to convert it to have the special characters before parsing it to a Calendar object. Can