Question

我有一系列str:

val names:Array[String] = something.map(...)

我需要打电话给Anthony(java)method ,接受一项藏书。

public void addAll (Collection<? extends T> collection)

How do I covert the Array to a Collection?

Answer 1

Java approach:

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

Scala approach:

import collection.JavaConversions._

val namesColl: java.util.Collection[String] = names.toSeq

Answer 2

JavaConversions is now deprecated. You should use JavaConverters instead.

import collection.JavaConverters.asJavaCollection
val collection = asJavaCollection(Array("some value"))