Java Convert LocalDateTime to Epoch Seconds

Tags: Java LocalDateTime Java 8

In this Java core tutorial we learn how to convert a LocalDateTime object to an epoch seconds value in Java programming language.

How to convert LocalDateTime to Epoch Seconds in Java

In Java, with a given LocalDateTime object we can use the LocalDateTime.toEpochSecond(ZoneOffset offset) method to convert it to an epoch seconds value which is the number of seconds from the epoch of 1970-01-01T00:00:00Z as the example Java code below.

ConvertLocalDateTimeToEpochSecondsExample1.java 

import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZoneOffset;

public class ConvertLocalDateTimeToEpochSecondsExample1 {
    public static void main(String... args) {
        LocalDateTime localDateTime = LocalDateTime.parse("2022-05-19T08:30:55");

        ZoneOffset zoneOffset = ZoneId.systemDefault().getRules().getOffset(Instant.now());

        long epochSeconds = localDateTime.toEpochSecond(zoneOffset);

        System.out.println("LocalDateTime: " + localDateTime);
        System.out.println("Epoch Seconds: " + epochSeconds);
    }
}
The output as below. 
LocalDateTime: 2022-05-19T08:30:55
Epoch Seconds: 1652923855

Happy Coding 😊

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