java - 如何找到两个日期之间的天数？

Question

我想知道两个日期之间的天数。当我使用以下代码时，它会引发错误。我如何解决它？

import org.joda.time.{DateTime, Days}

val start = "2018-10-01 00:00:00"
val end= "2018-10-12 00:00:00"

val from = DateTime.parse(start)
val to = DateTime.parse(end)

println(from + "<>" + to)

println("Number of days between 2 period: " + Days.daysBetween(from, to).getDays)

错误：

java.lang.IllegalArgumentException: Invalid format: "2018-10-01 00:00:00" is malformed at " 00:00:00"

标签： javascala

Answer 1

joda.time是旧的和过时的。使用java.time.

import java.time.LocalDate
import java.time.temporal.ChronoUnit.DAYS

DAYS.between(LocalDate.parse("2018-10-01")
            ,LocalDate.parse("2018-10-12"))  //res0: Long = 11