Module org.holiday.calendar.core

Package org.holiday.calendar.function

package org.holiday.calendar.function

Functional interfaces to support construction of filters and date calculation algorithms as lambda expressions.

Observance computes the date of a FloatingHoliday or EarlyCloseHoliday for a given year and also acts as a Predicate<Integer> indicating whether the holiday occurs in that year (e.g. a holiday introduced only from a certain year onward):

 Observance juneteenth = year -> year >= 2021 ? LocalDate.of(year, Month.JUNE, 19) : null;
 

DateRoll adjusts a calculated date that falls on a weekend to its actual observed date; DateRolls supplies common strategies used throughout the regional calendar modules:

 HolidayCalendar.builder()
     .dateRoll(DateRolls.followingMonday())
     .weekendDays(HolidayCalendar.STANDARD_WEEKEND)
     // ...
     .build();
 

Author:

Dave Joyce

Related Packages

Package	Description
org.holiday.calendar	Base classes and interfaces of the Holiday Calendar API.
org.holiday.calendar.observance	Base classes for Observance implementations, used throughout the regional calendar modules.
org.holiday.calendar.util	Shared runtime utilities used by Observance implementations across the regional calendar modules.

Class	Description
DateRoll	Defines date adjustment behavior for holiday observance when the calculated date falls on a weekend day.
DateRolls	Factory providing common DateRoll strategies.
Observance	Function for computation of observed date of a holiday for a specified year.