import java.time.Instant;

public class Main {
	public static void main(String[] args) {
		Instant instant = Instant.now();
		System.out.println(instant);

		long instantToEpochMilli = instant.toEpochMilli();
		System.out.println(instantToEpochMilli);

		Instant instantOfEpochMilli = Instant.ofEpochMilli(instantToEpochMilli);
		System.out.println(instantOfEpochMilli);
	}
}