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【Kotlin】OffsetDateTimeでミリ秒まで出力
val time = LocalDateTime.now()
val time1 = time.atOffset(ZoneOffset.of("+09:00")).truncatedTo(ChronoUnit.MILLIS)
val time2 = time.atOffset(ZoneOffset.UTC).truncatedTo(ChronoUnit.MILLIS)
val time3 = time.atOffset(ZoneOffset.of("+09:00")).truncatedTo(ChronoUnit.MILLIS).withOffsetSameInstant(ZoneOffset.UTC)
println(time)
println(time1)
println(time2)
println(time3)