The toEpochSecond() method of LocalTime class is used to convert this LocalTime to the number of seconds since the epoch of 1970-01-01T00:00:00Z. The method combines this local time with the specified date and offset passed as parameters to calculate the epoch-second value, which is the number of elapsed seconds from 1970-01-01T00:00:00Z. Instants on the timeline after the epoch are positive, earlier are negative.
Syntax:
public long toEpochSecond(LocalDate date, ZoneOffset offset)
Parameters: This method accepts two parameters:
- date: It is the date which is to be used for epoch second calculation as the target date.
- offset: It is the zone offset.
Return value: This method returns number of seconds since the epoch of 1970-01-01T00:00:00Z. It may be negative.
Below programs illustrate the toEpochSecond() method:
Program 1:
// Java program to demonstrate // LocalTime.toEpochSecond() method import java.time.*;
public class GFG {
public static void main(String[] args)
{
// create a LocalDate object
LocalDate date
= LocalDate.parse(" 2018 - 12 - 29 ");
// create a LocalTime object
LocalTime time
= LocalTime.parse(" 20 : 12 : 32 ");
// print Instant
System.out.println("LocalDate: " + date);
// create ZoneId
ZoneOffset zone = ZoneOffset.of("Z");
// print ZoneId
System.out.println("ZoneOffset: " + zone);
// apply toEpochSecond()
long value = time.toEpochSecond(date, zone);
// print result
System.out.println("Epoch Second: "
+ value);
}
} |
LocalDate: 2018-12-29 ZoneOffset: Z Epoch Second: 1546114352
Program 2:
// Java program to demonstrate // LocalTime.toEpochSecond() method import java.time.*;
public class GFG {
public static void main(String[] args)
{
// create a LocalDate object
LocalDate date
= LocalDate.parse(" 1909 - 04 - 18 ");
// create a LocalTime object
LocalTime time
= LocalTime.parse(" 00 : 10 : 09 ");
// print Instant
System.out.println("LocalDate: " + date);
// create ZoneId
ZoneOffset zone = ZoneOffset.of("Z");
// print ZoneId
System.out.println("ZoneOffset: " + zone);
// apply toEpochSecond()
long value = time.toEpochSecond(date, zone);
// print result
System.out.println("Epoch Second: "
+ value);
}
} |
LocalDate: 1909-04-18 ZoneOffset: Z Epoch Second: -1915746591