Returns a field to access the year of a week-based-year based on this {@code WeekFields}.
!(p)
This represents the concept of the year where weeks start on a fixed day-of-week,
such as Monday and each week belongs to exactly one year.
This field is typically used with {@link WeekFields#dayOfWeek()} and
{@link WeekFields#_weekOfWeekBasedYear()}.
!(p)
Week one(1) is the week starting on the {@link WeekFields#getFirstDayOfWeek}
where there are at least {@link WeekFields#getMinimalDaysInFirstWeek()} days _in the year.
Thus, week one may start before the start of the year.
If the first week starts after the start of the year then the period before
is _in the last week of the previous year.
!(p)
This field can be used with any calendar system.
!(p)
In the resolving phase of parsing, a date can be created from a week-based-year,
week-of-year and day-of-week.
!(p)
In {@linkplain ResolverStyle#STRICT strict mode}, all three fields are
validated against their _range of valid values. The week-of-year field
is validated to ensure that the resulting week-based-year is the
week-based-year requested.
!(p)
In {@linkplain ResolverStyle#SMART smart mode}, all three fields are
validated against their _range of valid values. The week-of-week-based-year field
is validated from 1 to 53, meaning that the resulting date can be _in the
following week-based-year to that specified.
!(p)
In {@linkplain ResolverStyle#LENIENT lenient mode}, the year and day-of-week
are validated against the _range of valid values. The resulting date is calculated
equivalent to the following three stage approach.
First, create a date on the first day of the first week _in the requested week-based-year.
Then take the week-of-week-based-year, subtract one, and add the amount _in weeks to the date.
Finally, adjust to the correct day-of-week within the localized week.
@return a field providing access to the week-based-year, not null
Returns a field to access the year of a week-based-year based on this {@code WeekFields}. !(p) This represents the concept of the year where weeks start on a fixed day-of-week, such as Monday and each week belongs to exactly one year. This field is typically used with {@link WeekFields#dayOfWeek()} and {@link WeekFields#_weekOfWeekBasedYear()}. !(p) Week one(1) is the week starting on the {@link WeekFields#getFirstDayOfWeek} where there are at least {@link WeekFields#getMinimalDaysInFirstWeek()} days _in the year. Thus, week one may start before the start of the year. If the first week starts after the start of the year then the period before is _in the last week of the previous year. !(p) This field can be used with any calendar system. !(p) In the resolving phase of parsing, a date can be created from a week-based-year, week-of-year and day-of-week. !(p) In {@linkplain ResolverStyle#STRICT strict mode}, all three fields are validated against their _range of valid values. The week-of-year field is validated to ensure that the resulting week-based-year is the week-based-year requested. !(p) In {@linkplain ResolverStyle#SMART smart mode}, all three fields are validated against their _range of valid values. The week-of-week-based-year field is validated from 1 to 53, meaning that the resulting date can be _in the following week-based-year to that specified. !(p) In {@linkplain ResolverStyle#LENIENT lenient mode}, the year and day-of-week are validated against the _range of valid values. The resulting date is calculated equivalent to the following three stage approach. First, create a date on the first day of the first week _in the requested week-based-year. Then take the week-of-week-based-year, subtract one, and add the amount _in weeks to the date. Finally, adjust to the correct day-of-week within the localized week.
@return a field providing access to the week-based-year, not null