Dog.scala

Dog.scala

trait Speaker {
    def speak(): String
}

trait TailWagger {
    def startTail(): Unit
    def stopTail(): Unit
}

trait Runner {
    def startRunning(): Unit
    def stopRunning(): Unit
}

class Dog extends Speaker with TailWagger with Runner {
    // Speaker
    override def speak(): String = "Woof!"

    // TailWagger
    override def startTail(): Unit = println("Tail is wagging")
    override def stopTail(): Unit = println("Tail is stopped")

    // Runner
    override def startRunning(): Unit = println("I'm running")
    override def stopRunning(): Unit = println("Stopped running")
}