java.time.LocalDate.atStartOfDay() Method Example

Description

The java.time.LocalDate.atStartOfDay(ZoneId zone) method returns a zoned date-time from this date at the earliest valid time according to the rules in the time-zone.

Declaration

Following is the declaration for java.time.LocalDate.atStartOfDay(ZoneId zone) method.

public ZonedDateTime atStartOfDay(ZoneId zone)

Parameters

zone − the zone ID to use, not null.

Return Value

the zoned date-time formed from this date and the earliest valid time for the zone, not null.

Example

The following example shows the usage of java.time.LocalDate.atStartOfDay(ZoneId zone) method.

package com.tutorialspoint;

import java.time.LocalDate;
import java.time.ZoneId;
import java.time.ZonedDateTime;

public class LocalDateDemo {
   public static void main(String[] args) {

      LocalDate date = LocalDate.parse("2017-02-03");
      System.out.println(date);  
      ZonedDateTime date1 = date.atStartOfDay(ZoneId.systemDefault());
      System.out.println(date1);  
   }
}

Let us compile and run the above program, this will produce the following result −

2017-02-03
2017-02-03T00:00+05:30[Asia/Calcutta]