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.Â
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:Â
Program 1:Â
Java
// Java program to demonstrate// LocalTime.toEpochSecond() methodÂ
import java.time.*;Â
public class GFG {Â Â Â Â public static void main(String[] args)Â Â Â Â {Â
        // create a LocalDate object        LocalDate date            = LocalDate.parse("2018-12-29");Â
        // create a LocalTime object        LocalTime time            = LocalTime.parse("20:12:32");Â
        // print Instant        System.out.println("LocalDate: " + date);Â
        // create ZoneId        ZoneOffset zone = ZoneOffset.of("Z");Â
        // print ZoneId        System.out.println("ZoneOffset: " + zone);Â
        // apply toEpochSecond()        long value = time.toEpochSecond(date, zone);Â
        // print result        System.out.println("Epoch Second: "                           + value);    }} |
Output:
LocalDate: 2018-12-29 ZoneOffset: Z Epoch Second: 1546114352
Program 2:Â
Java
// Java program to demonstrate// LocalTime.toEpochSecond() methodÂ
import java.time.*;Â
public class GFG {Â Â Â Â public static void main(String[] args)Â Â Â Â {Â
        // create a LocalDate object        LocalDate date            = LocalDate.parse("1909-04-18");Â
        // create a LocalTime object        LocalTime time            = LocalTime.parse("00:10:09");Â
        // print Instant        System.out.println("LocalDate: " + date);Â
        // create ZoneId        ZoneOffset zone = ZoneOffset.of("Z");Â
        // print ZoneId        System.out.println("ZoneOffset: " + zone);Â
        // apply toEpochSecond()        long value = time.toEpochSecond(date, zone);Â
        // print result        System.out.println("Epoch Second: "                           + value);    }} |
Output:
LocalDate: 1909-04-18 ZoneOffset: Z Epoch Second: -1915746591
