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Scala program to create a simple trait

Here, we are going to learn how to create a simple trait in Scala programming language?
Submitted by Nidhi, on June 05, 2021

Problem Solution:

Here, we will create a simple trait with an abstract method. A trait is just like an interface. A may contain, abstract and non-abstract methods.

Program/Source Code:

The source code to create a simple trait is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to create a simple trait

trait SampleTrait {
  def sayHello();
}

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

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

Output:

Hello World

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(). Then we extend the SampleTrait into the Test class and implemented the 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 an object of the Test class and called sayHello() method to print the "Hello World" message on the console screen.

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