LocalDate atStartOfDay() method in Java with Examples
Last Updated :
14 Jul, 2022
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:
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 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:
Java
import java.util.*;
import java.time.*;
public class GfG {
public static void main(String[] args)
{
LocalDate dt = LocalDate.parse(" 2019 - 11 - 01 ");
System.out.println(dt);
LocalDateTime dt1 = dt.atStartOfDay();
System.out.println(dt1);
}
}
|
Output:
2019-11-01
2019-11-01T00:00
Program 2: Program with parameters.
Java
import java.util.*;
import java.time.*;
public class GfG {
public static void main(String[] args)
{
LocalDate dt = LocalDate.parse(" 2018 - 01 - 20 ");
System.out.println(dt);
ZonedDateTime dt1 = dt.atStartOfDay(ZoneId.systemDefault());
System.out.println(dt1);
}
}
|
Output:
2018-01-20
2018-01-20T00:00Z[Etc/UTC]
Reference: https://docs.oracle.com/javase/10/docs/api/java/time/LocalDate.html#atStartOfDay()
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