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Scala program to create a non-abstract method inside the trait

Here, we are going to learn how to create a non-abstract method inside the trait in Scala programming language?
Submitted by Nidhi, on June 05, 2021 [Last updated : March 12, 2023]

Scala - Non-Abstract Method Inside the Trait

Here, we will create a trait with the abstract and non-abstract method. Then we will implement the abstract method in a class by extending created trait.

Scala code to create a non-abstract method inside the trait

The source code to create a non-abstract method inside the trait is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to create a non-abstract method
// inside the trait

trait SampleTrait {
  def sayHello();
  def sayHi() {
    println("Hi from SampleTrait");
  }
}

class Test extends SampleTrait {
  def sayHello() {
    println("Hello world");
  }
}

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

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

Output

Hello world
Hi from SampleTrait

Explanation

In the above program, we used an object-oriented approach to create the program. Here, we created a trait SampleTrait that contains an abstract method sayHello() and a non-abstract method sayHi(). Then we extend the SampleTrait into class Test and implement sayHello() method.

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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