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

Starting Scala 2.13, there is a dedicated converter from scala's Option to java's Optional.

From Java (the explicit way):

import scala.jdk.javaapi.OptionConverters;

// val option: Option[Int] = Some(42)
OptionConverters.toJava(option);
// java.util.Optional[Int] = Optional[42]

From Scala (the implicit way):

import scala.jdk.OptionConverters._

// val option: Option[Int] = Some(42)
option.toJava
// java.util.Optional[Int] = Optional[42]