Java Date and Time examples

look at:

https://stackabuse.com/how-to-get-current-date-and-time-in-java/ 

valuable source about java date classes : https://stackoverflow.com/questions/32437550/whats-the-difference-between-instant-and-localdatetime

System.out.println(LocalDateTime.now());

2021-03-19T13:27:06.043

System.out.println(Instant.now());

2021-03-19T09:27:06.044Z

System.out.println(LocalDateTime.now().atZone(ZoneId.systemDefault()));

2021-03-19T13:27:06.057+04:00[Asia/Baku]

System.out.println(LocalDateTime.now().atZone(ZoneId.systemDefault()).toInstant());

2021-03-19T09:27:06.058Z

System.out.println(Date.from(LocalDateTime.now().atZone(ZoneId.systemDefault()).toInstant()));

Fri Mar 19 13:27:06 AZT 2021

System.out.println(new Date());

Fri Mar 19 13:27:06 AZT 2021

System.out.println(LocalDate.now());

2021-03-19

System.out.println(LocalTime.now());

13:27:06.066

System.out.println(ZonedDateTime.now());

2021-03-19T13:27:06.066+04:00[Asia/Baku]

System.out.println(ZoneId.systemDefault());

Asia/Baku

System.out.println(System.currentTimeMillis());

1616146026066

System.out.println(Calendar.getInstance().getTime());

Fri Mar 19 13:27:06 AZT 2021

System.out.println(Clock.systemDefaultZone());

SystemClock[Asia/Baku]

System.out.println(Clock.systemUTC());

SystemClock[Z]

System.out.println(OffsetDateTime.now());

2023-10-09T17:36:45.729079+04:00