Quiz: Nullability

Test your understanding of the concepts discussed in the Nullability chapter.

1

What is the output of the following Kotlin program?

fun main() {
   var a: String? = null
   println(a?.length)
}
A)

null

B)

0

C)

NullPointerException

D)

UninitializedPropertyAccessException

Question 1 of 50 attempted

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