How to calculate Date from ISO8601 week number in Java

Question

Is there any way of doing this: How to get dates of a week (I know week number)? for ISO 8601 week number without using any library or calender in Java?

Answer 1

LocalDate date = 
  LocalDate.parse("2015 53", 
     new DateTimeFormatterBuilder().appendPattern("YYYY w")
    .parseDefaulting(WeekFields.ISO.dayOfWeek(), 1)
    .toFormatter()));