Convert return new array in Java to Kotlin

Question

I am trying to convert a return new array in Java to Kotlin. I have tried using the docs but doesn't seem to work.

Below is the java code

public ScoreController[] newArray(int size) {
        return new ScoreController[size];
    }

Below is Kotlin code that I trying to do

override fun newArray(size: Int): Array<GenderController> {
            return arrayOfNulls(size)
        }

The kotlin code isn't happy :(

zsmb13 · Accepted Answer · 2018-03-22 10:29:27Z

3

You're explicitly returning an Array that contains null values, you have to adjust your return type to allow for that:

override fun newArray(size: Int): Array<GenderController?> {
    return arrayOfNulls(size)
}

This can be seen from the signature of the arrayOfNulls function, it returns an Array<T?>:

fun <reified T> arrayOfNulls(size: Int): Array<T?>

answered Mar 22, 2018 at 10:29

zsmb13

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