isNotEmpty
Return
true if the array is not null and contains at least one element.
Return
true if the map is not null and contains at least one element.
Return
true if the set is not null and contains at least one element.
true if the array is not null and contains at least one element.
true if the map is not null and contains at least one element.
true if the set is not null and contains at least one element.