Creating array of objects with fixed size in Kotlin

Question

How I can create Array of my custom objects with fixed size in Kotlin?

like?

ArrayList<CustomObject> array = new ArrayList<>()

or ?

CustomObject[] objects = new CustomObjects[5]

Egor · Accepted Answer · 2020-06-19 19:19:35Z

3

There are two options:

arrayOfNulls(size: Int) - creates an array of a specific size and populates it will null references. It's not possible to use this function with non-nullable types.
<init>(size: Int, init: (Int) -> T) constructor - creates an array of a specific size and runs supplied lambda for every index in the array to create an element for that index.

answered Jun 19, 2020 at 19:19

Egor

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1 Comment

private val customObjectArray = arrayOfNulls<customObject>(5) customObjectArray[0] = CustomObject(this, 2)