Convert Scala Option to Java Optional

Question

I need to convert Scala Option to Java Optional. I managed to wrote this:

public  Optional convertOption2Optional(Option option) {
           


        

Answer 1

I am doing this:

import java.util.{Optional => JOption}

package object myscala {

    implicit final class RichJOption[T](val optional: JOption[T]) {

        def asScala: Option[T] = optional match {
            case null => null
            case _ => if (optional.isPresent) Option(optional.get()) else None
        }

    }

    implicit final class RichOption[T](val option: Option[T]) {

        def asJava: JOption[T] = option match {
            case null => null
            case _ => if (option.isDefined) JOption.of(option.get) else JOption.empty()
        }

    }
}

so, you can use it like this, :)

import myscala._

object Main extends App {

    val scalaOption = java.util.Optional.ofNullable("test").asScala
    println(scalaOption)

    val javaOption = Option("test").asJava
    println(javaOption)

}