LocalDate.datesUntil()方法创建了两个本地日期之间的流
instances 方法允许我们可选地指定步长。该方法有两种变体,第一种接受end date 作为参数,并返回当前日期和结束日期之间的日期列表;而第二种接受一个Period 对象作为参数,该对象提供了一种跳过日期的方式,并仅流式传输start 和end 日期之间的一部分日期。<strong>public Stream<LocalDate> datesUntil(LocalDate end) public Stream<LocalDate> datesUntil(LocalDate end, Period step)</strong>
import java.time.LocalDate; import java.time.Period; import java.time.Month; import java.util.stream.Stream; public class DatesUntilMethodTest { public static void main(String args[]) { final LocalDate myBirthday = <strong>LocalDate.of</strong>(1980, Month.AUGUST, 8); final LocalDate christmas = <strong>LocalDate.of</strong>(1980, Month.DECEMBER, 25); System.out.println("Day-Stream:\n"); final <strong>Stream<LocalDate></strong> daysUntil = myBirthday.<strong>datesUntil</strong>(christmas); daysUntil.<strong>skip</strong>(50).<strong>limit</strong>(10).<strong>forEach</strong>(System.out::println); System.out.println("\nMonth-Stream:\n"); final Stream monthsUntil = myBirthday.<strong>datesUntil</strong>(christmas, <strong>Period.ofMonths</strong>(1)); monthsUntil.<strong>limit</strong>(5).forEach(System.out::println); } }
<strong>Day-Stream: 1980-09-27 1980-09-28 1980-09-29 1980-09-30 1980-10-01 1980-10-02 1980-10-03 1980-10-04 1980-10-05 1980-10-06 Month-Stream: 1980-08-08 1980-09-08 1980-10-08 1980-11-08 1980-12-08 </strong>
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