Java java.time.temporal.TemporalAdjusters用法及代码示例

// Implementation of TemporalAdjuster Class Output will
// be different at the time of execution for different
// days. All the dates in the output will be with respect
// to the current date of executing the program
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;
public class TemporalAdjusterExample {
    public static void main(String args[])
    {
        TemporalAdjusterExample gfg
            = new TemporalAdjusterExample();
        gfg.testAdjusters();
    }
    public void testAdjusters()
    {
        // to get the current date
        LocalDate date1 = LocalDate.now();
        System.out.println("Today's date is: " + date1);
        // to get the next monday
        LocalDate nextTuesday = date1.with(
            TemporalAdjusters.next(DayOfWeek.MONDAY));
        System.out.println("Next Monday is on : "
                           + nextTuesday);
        // to get the second saturday of next month
        LocalDate firstInYear = LocalDate.of(
            date1.getYear(), date1.getMonth(), 1);
        LocalDate secondSaturday
            = firstInYear
                  .with(TemporalAdjusters.nextOrSame(
                      DayOfWeek.SATURDAY))
                  .with(TemporalAdjusters.next(
                      DayOfWeek.SATURDAY));
       
        // print date of second Saturday of next month
        System.out.println("Second saturday is on : "
                           + secondSaturday);
    }
}