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
// Java program to demonstrate// LocalTime.toEpochSecond() methodimport 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); }} |
Output:
LocalDate: 2018-12-29 ZoneOffset: Z Epoch Second: 1546114352
Program 2:
Java
// Java program to demonstrate// LocalTime.toEpochSecond() methodimport 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); }} |
Output:
LocalDate: 1909-04-18 ZoneOffset: Z Epoch Second: -1915746591