让我们先设置一个日期:
LocalDate localDate = LocalDate.of(2019, Month.FEBRUARY, 11);
现在,将LocalDate调整为一年的最后一天:
LocalDate day = localDate.with(TemporalAdjusters.lastDayOfYear());
import java.time.LocalDate; import java.time.Month; import java.time.temporal.TemporalAdjusters; public class Demo { public static void main(String[] args) { LocalDate localDate = LocalDate.of(2019, Month.FEBRUARY, 11); System.out.println("Current Date = "+localDate); System.out.println("Current Month = "+localDate.getMonth()); LocalDate day = localDate.with(TemporalAdjusters.firstDayOfMonth()); System.out.println("First day of month = "+day); day = localDate.with(TemporalAdjusters.lastDayOfMonth()); System.out.println("Last day of month = "+day); day = localDate.with(TemporalAdjusters.lastDayOfYear()); System.out.println("Last day of year = "+day); day = localDate.with(TemporalAdjusters.firstDayOfNextMonth()); System.out.println("First day of next month = "+day); } }
输出结果
Current Date = 2019-02-11 Current Month = FEBRUARY First day of month = 2019-02-01 Last day of month = 2019-02-28 Last day of year = 2019-12-31 First day of next month = 2019-03-01