Question

In Kotlin, which feature improves safety by helping to avoid null pointer exceptions?
Choose one of the following. A.Type inference Mechanism B.Automatic garbage collation C.inheritance and inference implementation D.nullable and non-nullable type declarations

Answer 1

D. nullable and non-nullable type declarations

Kotlin's type system distinguishes nullable (e.g., String?) and non-nullable (String) types and provides safe-call (?.), Elvis (?:) and other checks so many null pointer exceptions are caught at compile time.