public static void main(String[] args) {
ZonedDateTime apollo11launch =
ZonedDateTime.of(1969, 7, 16, 9, 32, 0, 0, ZoneId.of("America/New_York"));
String formatted = DateTimeFormatter.ISO_DATE_TIME.format(apollo11launch);
// 1969-07-16T09:32:00-05:00[America/New_York]
System.out.println(formatted);
DateTimeFormatter formatter = DateTimeFormatter.ofLocalizedDateTime(FormatStyle.LONG);
formatted = formatter.format(apollo11launch);
// July 16, 1969 9:32:00 AM EDT
System.out.println(formatted);
formatted = formatter.withLocale(Locale.FRENCH).format(apollo11launch);
// 16 juillet 1969 09:32:00 EDT
System.out.println(formatted);
formatter = DateTimeFormatter.ofPattern("E yyyy-MM-dd HH:mm");
formatted = formatter.format(apollo11launch);
System.out.println(formatted);
LocalDate churchsBirthday = LocalDate.parse("1903-06-14");
System.out.println("churchsBirthday: " + churchsBirthday);
apollo11launch =
ZonedDateTime.parse(
"1969-07-16 03:32:00-0400", DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ssxx"));
System.out.println("apollo11launch: " + apollo11launch);
}
public static void main(String[] args) {
LocalDateTime localDateTime = LocalDateTime.of(2016, 3, 27, 1, 20);
localDateTime = localDateTime.plusHours(1);
System.out.println(localDateTime);
ZoneId zoneId = ZoneId.of("Europe/Warsaw");
ZonedDateTime zonedDateTime = ZonedDateTime.of(localDateTime, zoneId);
System.out.println(zonedDateTime);
}
public static void main(String[] args) {
ZonedDateTime apollo11launch =
ZonedDateTime.of(1969, 7, 16, 9, 32, 0, 0, ZoneId.of("America/New_York"));
// 1969-07-16T09:32-04:00[America/New_York]
System.out.println("apollo11launch: " + apollo11launch);
Instant instant = apollo11launch.toInstant();
System.out.println("instant: " + instant);
ZonedDateTime zonedDateTime = instant.atZone(ZoneId.of("UTC"));
System.out.println("zonedDateTime: " + zonedDateTime);
ZonedDateTime skipped =
ZonedDateTime.of(
LocalDate.of(2013, 3, 31), LocalTime.of(2, 30), ZoneId.of("Europe/Berlin"));
// Constructs March 31 3:30
System.out.println("skipped: " + skipped);
ZonedDateTime ambiguous =
ZonedDateTime.of(
LocalDate.of(2013, 10, 27), // End of daylight savings time
LocalTime.of(2, 30),
ZoneId.of("Europe/Berlin"));
// 2013-10-27T02:30+02:00[Europe/Berlin]
ZonedDateTime anHourLater = ambiguous.plusHours(1);
// 2013-10-27T02:30+01:00[Europe/Berlin]
System.out.println("ambiguous: " + ambiguous);
System.out.println("anHourLater: " + anHourLater);
ZonedDateTime meeting =
ZonedDateTime.of(
LocalDate.of(2013, 10, 31), LocalTime.of(14, 30), ZoneId.of("America/Los_Angeles"));
System.out.println("meeting: " + meeting);
ZonedDateTime nextMeeting = meeting.plus(Duration.ofDays(7));
// Caution! Won’t work with daylight savings time
System.out.println("nextMeeting: " + nextMeeting);
nextMeeting = meeting.plus(Period.ofDays(7)); // OK
System.out.println("nextMeeting: " + nextMeeting);
}
public static ZonedDateTime getNextSchedule() {
ZonedDateTime next_schedule;
// Determine type of schedule
if (ConfigHandler.backupInterval > 0) // Interval
{
next_schedule =
ZonedDateTime.ofInstant(
Instant.ofEpochMilli(
System.currentTimeMillis() + (ConfigHandler.backupInterval * 60 * 1000)),
ZoneId.systemDefault());
} else // Schedule
{
if (ConfigHandler.backupSchedule.length == 0) {
return null;
}
LocalTime now = LocalTime.now();
LocalTime next_time = null;
LocalDate day = LocalDate.now();
TreeSet<LocalTime> times = new TreeSet<>();
for (String s : ConfigHandler.backupSchedule) {
times.add(LocalTime.parse(s, DateTimeFormatter.ofPattern("H:mm")));
}
for (LocalTime t : times) // try to find next scheduled time for today
{
if (t.compareTo(now) == 1) {
next_time = t;
break;
}
}
if (next_time
== null) // if we couldn't find one for today take the first schedule time for tomorrow
{
day = day.plusDays(1);
next_time = times.first();
}
next_schedule = ZonedDateTime.of(day, next_time, ZoneId.systemDefault());
}
return next_schedule;
}
