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arraylistkotlinindexoutofboundsexception

How to initialize an empty ArrayList in Kotlin?

I have an empty arraylist:

var mylist: ArrayList<Int> = ArrayList()

When I want to set value in it I got this error:

java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0

The question is: How can I initialize my list?

Solution

  • According to the api-doc:

    val list = arrayListOf<Int>()

    This is also mentioned here: How to initialize List in Kotlin? .