Hands-On Object-Oriented Programming with Kotlin

Functions with mutable collections

Create a mutable list in the getMutableList function and return the list, as follows:

fun getMutableList() : MutableList<Int> {    val list = mutableListOf(1,2,3,4,5)    return list}

Create a listFromKotlin variable in Java and assign a list to this variable by using the CallKotlinKt.getMutableList function from Kotlin.

See the following example:

public static void main(String args[]) {    System.out.print("Kotlin mutable list");    //List<int> listFromKotlin = KotlinToJavaKt.mutableList();    List<Integer> listFromKotlin = CallKotlinKt.getMutableList();    listFromKotlin.add(6);    for (int i = 0; i < listFromKotlin.size(); i++) {        System.out.println("Element " +  listFromKotlin.get(i));    } }

Notice that Kotlin is not familiar ...