LocalDateTime
val ldt = LocalDateTime.parse("2006-01-02 15:04:05", DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")
ldt.toString() 2006-01-02T15:04:05
ldt.format(DateTimeFormatter.BASIC_ISO_DATE) 20060102
ldt.format(DateTimeFormatter.ISO_DATE) 2006-01-02
ldt.format(DateTimeFormatter.ISO_DATE_TIME) 2006-01-02T15:04:05
ldt.format(DateTimeFormatter.ISO_LOCAL_DATE) 2006-01-02
ldt.format(DateTimeFormatter.ISO_LOCAL_DATE_TIME) 2006-01-02T15:04:05
ldt.format(DateTimeFormatter.ISO_LOCAL_TIME) 15:04:05
ldt.format(DateTimeFormatter.ISO_ORDINAL_DATE) 2006-002
ldt.format(DateTimeFormatter.ISO_TIME) 15:04:05
ldt.format(DateTimeFormatter.ISO_WEEK_DATE) 2006-W01-1
ldt.toLocalDate().atStartOfDay().format(DateTimeFormatter.ISO_DATE_TIME) 2006-01-02T00:00:00
ldt.toLocalDate().atStartOfDay().plusSeconds(86400 - 1)
.format(DateTimeFormatter.ISO_DATE_TIME) 2006-01-02T23:59:59
Timestamp.valueOf(ldt) 2006-01-02 15:04:05.0
Timestamp.valueOf(ldt).time 1136181845000
Timestamp.valueOf(ldt).toLocalDateTime() 2006-01-02T15:04:05
OffsetDateTime
val odt = OffsetDateTime.parse("2006-01-02T15:04:05+09:00")
odt.toString() 2006-01-02T15:04:05+09:00
odt.format(DateTimeFormatter.ISO_INSTANT) 2006-01-02T06:04:05Z
odt.format(DateTimeFormatter.ISO_OFFSET_DATE) 2006-01-02+09:00
odt.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME) 2006-01-02T15:04:05+09:00
odt.format(DateTimeFormatter.ISO_OFFSET_TIME) 15:04:05+09:00
odt.format(DateTimeFormatter.ISO_ZONED_DATE_TIME) 2006-01-02T15:04:05+09:00
odt.format(DateTimeFormatter.RFC_1123_DATE_TIME) Mon, 2 Jan 2006 15:04:05 +0900
java.text.SimpleDateFormat
https://docs.oracle.com/javase/8/docs/api/java/text/SimpleDateFormat.html?is-external=true
| Letter | Date or Time Component | Presentation | Examples |
|---|---|---|---|
| G | Era designator | Text | AD |
| y | Year | Year | 1996; 96 |
| Y | Week year | Year | 2009; 09 |
| M | Month in year (context sensitive) | Month | July; Jul; 07 |
| L | Month in year (standalone form) | Month | July; Jul; 07 |
| w | Week in year | Number | 27 |
| W | Week in month | Number | 2 |
| D | Day in year | Number | 189 |
| d | Day in month | Number | 10 |
| F | Day of week in month | Number | 2 |
| E | Day name in week | Text | Tuesday; Tue |
| u | Day number of week (1 = Monday, …, 7 = Sunday) | Number | 1 |
| a | Am/pm marker | Text | PM |
| H | Hour in day (0-23) | Number | 0 |
| k | Hour in day (1-24) | Number | 24 |
| K | Hour in am/pm (0-11) | Number | 0 |
| h | Hour in am/pm (1-12) | Number | 12 |
| m | Minute in hour | Number | 30 |
| s | Second in minute | Number | 55 |
| S | Millisecond | Number | 978 |
| z | Time zone | General time zone | Pacific Standard Time; PST; GMT-08:00 |
| Z | Time zone | RFC 822 time zone | -0800 |
| X | Time zone | ISO 8601 time zone | -08; -0800; -08:00 |