CODEWITHSUNDEEP
scala
Maksim
Maksim

Reputation: 16941

Can a Scala class extend multiple classes?

Is it possible to extend multiple classes in Scala.

For example if I have ClassA and ClassB then can ClassC extend ClassA and ClassB (like in C++).

Upvotes: 48

Views: 50078

Answers (2)

loki
loki

Reputation: 2311

No, ClassC just can extend one of those, but you can mixin multiple traits.

Upvotes: 32

Tal Pressman
Tal Pressman

Reputation: 7317

You can't extend multiple classes, but you can extend several traits. Unlike Java interfaces, traits can also include implementation (method definitions, data members, etc.). There is still a difference in that you can't instantiate a trait directly (similar to abstract classes in a way).

trait T1
trait T2
trait T3
class C extends T1 with T2 with T3

Upvotes: 50

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