@Test
public void testLocalDateTime() {
System.out.println(LocalDateTime.now());
System.out.println(LocalDateTime.of(1994, Month.MAY, 15, 11, 30));
System.out.println(LocalDateTime.ofInstant(Instant.now(), ZoneId.systemDefault()));
System.out.println(LocalDateTime.ofEpochSecond(1450749600, 0, ZoneOffset.ofHours(8)));
System.out.printf("6 months from now: %s%n", LocalDateTime.now().plusMonths(6));
System.out.printf("6 days ago: %s%n", LocalDateTime.now().minusDays(6));
System.out.println(DateTimeFormatter.ISO_DATE_TIME.format(LocalDateTime.now()));
System.out.println(DateTimeFormatter.ofPattern("MM-dd HH:mm").format(LocalDateTime.now()));
}
