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DateCalculator是用于日期计算的工具类。这个工具类将包括日期的加减、比较、周期计算、日期

范围生成等功能。

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.Period;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.List;public class DateCalculator {// 日期加法public static LocalDate addDays(LocalDate date, long days) {return date.plusDays(days);}public static LocalDate addWeeks(LocalDate date, long weeks) {return date.plusWeeks(weeks);}public static LocalDate addMonths(LocalDate date, long months) {return date.plusMonths(months);}public static LocalDate addYears(LocalDate date, long years) {return date.plusYears(years);