Consider an example where we want to mix two traits into a class and their declaration of a method is identical:
trait FormalGreeting { def hello(): String}trait InformalGreeting { def hello(): String}class Greeter extends FormalGreeting with InformalGreeting { override def hello(): String = "Good morning, sir/madam!"}object GreeterUser { def main(args: Array[String]): Unit = { val greeter = new Greeter() System.out.println(greeter.hello()) }}
In the preceding example, the greeter is always polite and mixes both formal and informal greetings. While implementing, it just has to implement the method once.
