Java covert Unix timestamp to "yyyy-MM-dd HH:mm:ss"

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

public class Main {
    public static void main(String[] args) {
        // Example usage
        int unixTimestamp = 1640995200; // Example Unix timestamp
        String formattedDate = formatUnixTimestamp(unixTimestamp);
        System.out.println(formattedDate);
    }

    public static String formatUnixTimestamp(int unixTimestamp) {
        // Convert int Unix timestamp to long and then to Instant
        Instant instant = Instant.ofEpochSecond((long) unixTimestamp);

        // Convert Instant to LocalDateTime
        LocalDateTime dateTime = LocalDateTime.ofInstant(instant, ZoneId.systemDefault());

        // Format LocalDateTime to String
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        return dateTime.format(formatter);
    }
}