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Scala program to implement multiple traits in a class

Here, we are going to learn how to implement multiple traits in a class in Scala programming language?
Submitted by Nidhi, on June 05, 2021 [Last updated : March 12, 2023]

Scala - Multiple Traits in a Class

Here, we will create two traits with the abstract method. Then we will implement both traits in a class.

Scala code to implement multiple traits in a class

The source code to implement multiple traits in a class is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to implement multiple traits
// in a class

trait SampleTrait1 {
  def sayHello();

}

trait SampleTrait2 {
  def sayHi();
}

class Test extends SampleTrait1 with SampleTrait2 {
  def sayHello() {
    println("Hello world");
  }
  def sayHi() {
    println("Hiiiii");
  }

}

object Sample {
  def main(args: Array[String]) {
    var obj = new Test();

    obj.sayHello();
    obj.sayHi();
  }
}

Output

Hello world
Hiiiii

Explanation

In the above program, we used an object-oriented approach to create the program. Here, we created two traits SampleTrait1, SampleTrait2. The Sampletrait1 contains an abstract method sayHello() and Sampletrait2 contains an abstract method sayHi(). Then we extend the Test and implement both methods.

Then we created a singleton object Sample and defined the main() function. The main() function is the entry point for the program.

In the main() function, we created the object of the Test class and called sayHello() and sayHi() method and printed messages on the console screen.

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