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  1. import java.time.LocalDateTime;
  2. import java.time.temporal.ChronoUnit;
  3. import java.time.temporal.TemporalAdjusters;
  4. import java.time.temporal.WeekFields;
  5. import java.util.Locale;
  6.  
  7. public class Main {
  8. 	public static void main(String[] args) {
  9. 		// Test
  10. 		System.out.println(getDayOfWeekValue(LocalDateTime.of(2021, 11, 5, 17, 14, 24)));
  11. 	}
  12.  
  13. 	static int getDayOfWeekValue(LocalDateTime input) {
  14. 		return Math.toIntExact(
  15. 				ChronoUnit.DAYS.between(
  16. 						input.with(
  17. 								TemporalAdjusters.previousOrSame(
  18. 										WeekFields.of(Locale.US)
  19. 											.getFirstDayOfWeek())), 
  20. 						input.plusDays(1))); 
  21. 		// Note: One day has been added as ChronoUnit.DAYS.between excludes
  22. 		// the second parameter while calculating the number of days
  23. 	}
  24. }
  25.  
Success #stdin #stdout 0.15s 52168KB
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6
https://ideone.com/LYMNNz
language:
Java (HotSpot 12)
created:
3 years ago
visibility:
public

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