[Solved] What is the difference between nullabe and non-nullable type in Kotlin

by


Nullable types can hold nulls. When type is nullable the question mark is set after it’s type:

val str: String? = null

Non-nullable types can’t hold nulls:

val str: String = "some value"

If we try to set null value to Non-nullable type, IDE will give an error and code will not be compiled:

val str: String = null // error, the code won't compile

Here you can read more about Null Safety.

solved What is the difference between nullabe and non-nullable type in Kotlin