【Kotlin/JVM】17歳とMヶ月とD日

「17歳とMヶ月とD日」の計算

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

fun main() {
    val birthDate = LocalDate.parse("1964-09-25")
    val currentDate = LocalDate.now()

    var date = birthDate
    val years = 17L

    date = date.plusYears(years)
    val months = ChronoUnit.MONTHS.between(date, currentDate)

    date = date.plusMonths(months)
    val days = ChronoUnit.DAYS.between(date, currentDate)

    println("${years}歳と${months}ヶ月と${days}日")
}

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