import java.time.LocalDate
import java.time.format.DateTimeFormatter
object DateModifier {
/**
* Adds a specified number of weeks to the current system date.
*
* @param weeks The number of weeks to add (supports negative numbers to subtract).
* @return LocalDate The resulting future date as an immutable object.
*/
def addWeeksToCurrentDate(weeks: Long): LocalDate = {
// 1. Get the current date using the system clock in the default time zone
val currentDate: LocalDate = LocalDate.now()
// 2. Add the specified weeks using the built-in plusWeeks method.
// This automatically handles month lengths, year rollovers, and leap years.
currentDate.plusWeeks(weeks)
}
def main(args: Array[String]): Unit = {
val weeksToAdd: Long = 4
// Calculate the future date
val futureDate: LocalDate = addWeeksToCurrentDate(weeksToAdd)
// Format the date into standard ISO-8601 (YYYY-MM-DD)
val formattedDate: String = futureDate.format(DateTimeFormatter.ISO_LOCAL_DATE)
println(s"Adding $weeksToAdd weeks to today's date gives: $formattedDate")
}
}
/*
run:
Adding 4 weeks to today's date gives: 2026-12-06
*/
