Best of both worlds

Scala is a mixture of functional and object-oriented worlds. It gives two benefits. First, you can leverage the power of functional constructs: higher-order functions, nested functions, pure functions, and closures. You get to work with more available (and recommended) immutable data structures. Working with immutable code helps in eliminating code that can introduce side effects or state change. This also makes this language suitable for concurrent programming. This is just another advantage Scala provides. Second, you've all the object-oriented goodies available.

You can define traits, mix them in with classes or objects, and achieve inheritance. The creation of objects, defining abstracts, and sub-classing is also possible in Scala.