CODEWITHSUNDEEP
javajava-time
Raymond Chenon
Raymond Chenon

Reputation: 12662

from Calendar week to java.time.ZonedDateTime

With java.time.ZonedDateTime , you can get the calendar week( say week 1).

import java.time.ZonedDateTime;

int getCalendarWeek(ZonedDateTime zonedDateTime){
   int week = zonedDateTime.get ( IsoFields.WEEK_OF_WEEK_BASED_YEAR );
   return week;
}

With year and a calendar week given (ex : 2019 and week 20 ) , how can you return a java.time.ZonedDateTime ?

The first day ( Monday) of the calendar week is the date. Whatever hour.

ZonedDateTime getZonedDateTime(int year, int weekNumber){
// ???
}

Upvotes: 0

Views: 295

Answers (1)

Gerben Jongerius
Gerben Jongerius

Reputation: 729

You could use the with operation in the ZonedDateTime to obtain a date based on a specific week. The WeekFields class allows access to the TemporalFields required to do this. See the sample below:

int week = 1;
int year = 2016;
WeekFields weekFields = WeekFields.of(Locale.getDefault());
ZonedDateTime ldt = ZonedDateTime.now()
                        .withYear(year)
                        .with(weekFields.weekOfYear(), week)
                        .with(weekFields.dayOfWeek(), 1);

Note that this does not solve the issue on the timezone, as it asumes the system default timezone.

Upvotes: 3

Related Questions