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

There is an asJava solution now! It's available from 2.10.

Example:

import scala.compat.java8.OptionConverters._

class Test {
  val o = Option(2.7)
  val oj = o.asJava        // Optional[Double]
  val ojd = o.asPrimitive  // OptionalDouble
  val ojds = ojd.asScala   // Option(2.7) again
}

More details here.