Java Convert Epoch Seconds to LocalDateTime

Tags: Java LocalDateTime Java 8

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

How to convert Epoch Seconds to LocalDateTime in Java

In Java, we can use the LocalDateTime.ofEpochSecond(long epochSecond, int nanoOfSecond, ZoneOffset offset) method to instantiate a new LocalDateTime object from a given epoch seconds value which is the number of seconds from the epoch of 1970-01-01T00:00:00Z.

ConvertEpochSecondsToLocalDateTimeExample1.java 

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

public class ConvertEpochSecondsToLocalDateTimeExample1 {
    public static void main(String... args) {
        long epochSeconds = 999888777;
        int nanosOfSecond = 0;
        ZoneOffset zoneOffset = ZoneId.systemDefault().getRules().getOffset(Instant.now());

        // Create LocalDateTime object from epoch seconds
        LocalDateTime localDateTime = LocalDateTime.ofEpochSecond(epochSeconds, nanosOfSecond, zoneOffset);

        System.out.println("Epoch seconds: " + epochSeconds);
        System.out.println("LocalDateTime: " + localDateTime);
    }
}
The output as below. 
Epoch seconds: 999888777
LocalDateTime: 2001-09-08T01:52:57

Happy Coding 😊

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