core/androidx.core.util/[main]Preconditions/checkNotNull

checkNotNull

@NonNull
open fun <T> checkNotNull(@Nullable reference: T): T(source)

Ensures that an object reference passed as a parameter to the calling method is not null.

Return

the non-null reference that was validated

Parameters

reference

an object reference

Throws

if reference is null

@NonNull
open fun <T> checkNotNull(@Nullable reference: T, @NonNull errorMessage: Any): T(source)

Ensures that an object reference passed as a parameter to the calling method is not null.

Return

the non-null reference that was validated

Parameters

reference

an object reference

errorMessage

the exception message to use if the check fails; will be converted to a string using valueOf

Throws

if reference is null