LocalDate atStartOfDay() method in Java with Examples
The atStartOfDay() method of LocalDate class in Java is combines this date with the time of midnight to create a LocalDateTime at the start of this date.
Syntax:
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public ZonedDateTime atStartOfDay(ZoneId zone)
Parameter: This method accepts a parameter zone which is the zone ID to be used and not necessary null. The parameter is not mandatory.
Return Value: It returns the the local date-time of midnight at the start of this date, not null.
Below programs illustrate the atStartOfDay() method of LocalDate in Java:
Program 1:
// Program to illustrate the atStartOfDay() method import java.util.*;import java.time.*; public class GfG { public static void main(String[] args) { // parses the local date LocalDate dt = LocalDate.parse("2019-11-01"); System.out.println(dt); // Function call LocalDateTime dt1 = dt.atStartOfDay(); System.out.println(dt1); }} |
2019-11-01 2019-11-01T00:00
Program 2: Program with parameters.
// Program to illustrate the atStartOfDay() method import java.util.*;import java.time.*; public class GfG { public static void main(String[] args) { // parses the local date LocalDate dt = LocalDate.parse("2018-01-20"); System.out.println(dt); // Function call ZonedDateTime dt1 = dt.atStartOfDay(ZoneId.systemDefault()); System.out.println(dt1); }} |
2018-01-20 2018-01-20T00:00Z[Etc/UTC]
Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#atStartOfDay()
