Scala program to demonstrate the final class

Program/Source Code:

The source code to demonstrate the final class is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to demonstrate the 
// final class

final class Demo1 {
  def sayHello() {
    println("Hello from Demo1");
  }
}

// Final class cannot be inherited.
// class Demo2 extends Demo1
class Demo2 {
  def sayHello() {
    println("Hello from Demo2");
  }
}

object Sample {
  def main(args: Array[String]) {
    var obj1 = new Demo1();
    var obj2 = new Demo2();

    obj1.sayHello();
    obj2.sayHello();
  }
}

Output:

Hiii from Demo1
Hello from Demo2

Explanation:

Here, we used an object-oriented approach to create the program. And, we created an object Sample.

Here, we created two classes Demo1 and Demo2. Both classes contain sayHello() methods. The Demo1 is a final class and it cannot be inherited.

In the main() function, we created the objects of the Demo1 and Demo2 class and called sayHello() method.