How to pass scala array[object] to java function parameters

Question

java code

public void insertRow(Object... fieldList) {
  for(int i = 0; i < fieldList.length; i++) {
    System.out.println(fieldList[i]);
  }
 }

Scala code

 def main(args: Array[String]) {
    insertRow(args)
}

As show above, I want to call a method which write in java and has a non-fixed parameters. when I pass parameter in scala Array, it the fieldList.length is always 1 and just get the whole args not the element in scala array. so could someone tell me how to convert a scala array to java or how to pass a scala array to java ?

Have you tried just adding a type ascription? i.e. insertRow(args: _*) — Luka Jacobowitz
– Luka Jacobowitz, Commented Mar 14, 2017 at 13:40
Possible duplicate of Pass variable-length arguments to another function expecting the same? — Andrei T.
– Andrei T., Commented Mar 14, 2017 at 13:42

Andrei T. · Accepted Answer · 2017-03-14 13:40:37Z

1

I think what you're looking for in this case is:

def main(args: Array[String]) {
  insertRow(args: _*)
}

Notice the _* syntax used to call the vararg method.

answered Mar 14, 2017 at 13:40

Andrei T.

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