I agree the words

Kotlin has features for null safety

or

Kotlin is langage that has null safety characteristic.

But I have question with words of

Kotlin is null safety language

or

Kotlin has null safety.

ryotamurohoshi:

Null safety is a feature of Kotlin

.

Kotlin has null safety

also sounds correct. You can read more about null safety here: https://kotlinlang.org/docs/reference/null-safety.html

null safety

means

does not let you throw a Null-Pointer Exception unless you explicitly want to

I read it many times. I thought there is no definition for null safety. (I thought there are features description to manage null well in Kotlin) But I read and thought again, The definition of

null safety

is that `Type system to eliminate NullPointerException (except special case). Isn't it?

Kotlin is a

null-safe

language; it is safe from the dangers of

null

.