javajava-8java-time

Format LocalDateTime with Timezone in Java8

I have the this simple code:

DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("yyyyMMdd HH:mm:ss.SSSSSS Z");
LocalDateTime.now().format(FORMATTER)

Then I will get following exception:

java.time.temporal.UnsupportedTemporalTypeException: Unsupported field: OffsetSeconds
at java.time.LocalDate.get0(LocalDate.java:680)
at java.time.LocalDate.getLong(LocalDate.java:659)
at java.time.LocalDateTime.getLong(LocalDateTime.java:720)
at java.time.format.DateTimePrintContext.getValue(DateTimePrintContext.java:298)
at java.time.format.DateTimeFormatterBuilder$OffsetIdPrinterParser.format(DateTimeFormatterBuilder.java:3315)
at java.time.format.DateTimeFormatterBuilder$CompositePrinterParser.format(DateTimeFormatterBuilder.java:2182)
at java.time.format.DateTimeFormatter.formatTo(DateTimeFormatter.java:1745)
at java.time.format.DateTimeFormatter.format(DateTimeFormatter.java:1719)
at java.time.LocalDateTime.format(LocalDateTime.java:1746)

How to resolve this issue?

Solution

  • LocalDateTime is a date-time without a time zone. You specified the time zone offset format symbol in the format, however, LocalDateTime doesn't have such information. That's why the error occurred.

    If you want time zone information, you should use ZonedDateTime.

    DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("yyyyMMdd HH:mm:ss.SSSSSS Z");
ZonedDateTime.now().format(FORMATTER);
=> "20140829 14:12:22.122000 +09"