Scala Traits in action

Scala Traits are somewhat similar to Java 8's interface, but they do more. We can use a Scala Trait as an interface (contract), abstract class, class, Mixin, and more.

In Scala, a Trait can contain abstract code, concrete code, or both. We can create a trait using the trait keyword, as shown here:

Trait Syntax: 
 
trait <Trait-Name> { 
 
  // Abstract members (Data and Functions) 
 
  // Non-Abstract (Concrete) members (Data and Functions) 
 
}  

Let's explore them, one by one, now.

Trait as an interface

We can define a Trait only with abstract members, as shown here:

rambabuposa@ram$ scala -cp joda-time-2.9.6.jar
Welcome to Scala 2.12.3 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_121...