In Scala, the abstract modifier means that the class may have abstract members that do not have an implementation. As a result, you cannot instantiate an abstract class.

Spark is a framework for distributed computing developed with Scala

It is NOT possible to override methods inherited from a super-class in Scala

In Scala, when a class inherits from a trait, it implements that trait’s interface, and inherits all the code contained in the trait.

One of Scala’s strengths is that it makes it very easy to interact with Java code. 

in Scala, it is forbidden to define a field and method with the same name in the same class, whereas it is allowed in Java.

The following lines of code produces an error in Scala 

object example{

  def main(args: Array[String]): Unit={

    val str="hello"

    println(str)

    str="world"

    println(str)

  }

}

What is wrong with the following lines of code in Scala

abstract class Element {

    def contents: Array[String]

}

object Example {

  def main(args: Array[String]): Unit = {

    var name = new Element

    println(name)

  }

}

Actors in Scala are basically concurrent processes that communicate by exchanging messages. 

The following lines of code produces an error in Scala 

object example{

  def main(args: Array[String]): Unit={

    var str="hello"

    println(str)

    str="world"

    println(str)

  }

}