How to convert Scala Array to Java List ?

Question

I want to convert an Scala array to Java list.

val legends = Array("0-500", "500-1000", "1000-2000", "2000-3000", "3000+")

to Java List.

Scala.Collections.JavaComvertors

Raman Mishra
– Raman Mishra

2018-12-25 03:49:29 +00:00
Commented Dec 25, 2018 at 3:49 — Raman Mishra
– Raman Mishra, Commented Dec 25, 2018 at 3:49

Dima · Accepted Answer · 2018-12-24 20:39:48Z

14

Same way you would convert a java array to a list (scala arrays are the same as java, so no surprise there):

java.util.Arrays.asList(legends:_*)

:_* is called a splat. It is needed to tell the compiler that you want to pass elements of the array as separate varags parameters, not the whole array as one parameter.

Or you can do it explicitly:

import scala.collection.JavaConverters._
val javaList = legends.toList.asJava

Or implicitly:

import scala.collection.JavaConversions._
val javaList: java.util.List[String] = legends.toList

edited Dec 24, 2018 at 20:39

answered Dec 24, 2018 at 19:42

Dima

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