71. Converting week/year to Date

Let’s consider the year 2023, week 10. The corresponding date is Sun Mar 05 15:15:08 EET 2023 (of course, the time component is relative). Converting the year/week to java.util.Date can be done via the Calendar API as in the following self-explanatory snippet of code:

public static Date from(int year, int week) {
  Calendar calendar = Calendar.getInstance();
  calendar.set(Calendar.YEAR, year);
  calendar.set(Calendar.WEEK_OF_YEAR, week);
  calendar.set(Calendar.DAY_OF_WEEK, 1);
  return calendar.getTime();
}

If you prefer to obtain a LocalDate instead of a Date then you can easily perform the corresponding conversion or you can rely on java.time.temporal.WeekFields. This API exposes several fields for working with week-of-year, week-of-month, and day-of-week. This being said, here is the previous solution written via WeekFields to return a LocalDate:

public static LocalDate from(int year, int week) {
  WeekFields weekFields = WeekFields...