withDayOfYear method

[Clemonte Johnstone]

Hi all,

Please could someone explain to me why the below code returns 2006-01-29?

	public static void main(String [] args) {
		LocalDate startDate = LocalDate.parse("2006-01-14");
		System.out.println(startDate.withDayOfYear(29));
	}

[Maciej Liso]

Hi, as the docs say "Returns a copy of this LocalDate with the day-of-year altered." so basically you can specify a number between 1 and 365-366 and the function will return your altered date with corresponding day. So for example, we have a date 2021-05-26, you then use this function and pass 240, method counts 240 days from the beginning of year 2021, which results with 28 of august and return you this date, so now you have 2021-08-28.