I'm converting some of the Elasticsearch Java API to Scala. There are some methods in Java that take a variable of type String... indices, so I'm trying to provide a Scala function with a variable of type indices: String*, that encapsulates that Java method.
I didn't find a way to convert String* to String....
I appreciate your help.
Scala interoperates with Java vararg functions, so if you knew the arguments, you could just provide them.
But the Scala String* will come through as a Scala Seq. But you'll want the contents of that Seq to be unrolled and provided as arguments to the Java function.
Scala has a special syntax for specifying that the contents of a Seq should be unrolled and passed along to a function. You write : _* after the name of the Seq.
So, it should be something like this:
def myScalaFunction( args : String* ) : Unit = {
javaStringVaragsFunction( args : _* )
}
Give it a try!
This should work:
javaMethod(args: _*)
Example:
val args = Array("1", "2")
String.format("%s %s", args: _*)
