I came across a java method that takes a java.util...

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[steenooo]

I came across a java method that takes a java.util.Optional. Does the kotlin lib provide a simple method to convert a nullable to an optional?

[karelpeeters]

Java already has Optional.ofNullable(x)

[molikuner]

As always, if you’re not happy with the available options, define your own. For example:

fun <T: Any> T?.asOptional(): Optional<T> = Optional.ofNullable(this)

or:

val <T: Any> T?.optional: Optional<T>
    get() = Optional.ofNullable(this)

[jimn]

to quote @raulraja: nullable types are isomorphic with Option types but they have performance on thier side