Unix Timestamps in Java

import java.time.Instant;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class EpochExample {
    public static void main(String[] args) {
        // 1. Current timestamp
        long currentSec = Instant.now().getEpochSecond();
        long currentMs  = System.currentTimeMillis();

        // 2. Convert timestamp (1710000000) to Instant
        Instant instant = Instant.ofEpochSecond(1710000000);
        System.out.println(instant.toString()); // ISO 8601 UTC

        // 3. Convert to specific timezone
        ZonedDateTime zdt = instant.atZone(ZoneId.of("America/New_York"));
        System.out.println(zdt.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME));
    }
}