import java.time.Instant;
import java.util.concurrent.TimeUnit;

public class Main {
	public static void main(String[] args) {
		long seconds = TimeUnit.SECONDS.convert(System.currentTimeMillis(), TimeUnit.MILLISECONDS);
		System.out.println(seconds);

		// Alternatively, using java.time API
		seconds = Instant.now().getEpochSecond();
		System.out.println(seconds);
	}
}