Prev Next

Scala / Scala interview questions

Explain about Scala variables.

There are 2 types of variables in Scala, val and var. A value variable (val) is constant and its value cannot be changed once assigned. It is immutable, while a regular variable (var), is mutable, and you can change the value.

val   exVal: Int=10 // cannot be changed
var  exVar : Int=11

More Related questions...

What is Scala? What does Scala support: OOP or FP? Why Scala is statically typed or strongly typed language? Advantages of using Scala. Is Java a statically typed language? Is scala a pure object-oriented programming language? Explain about Scala variables. Drawbacks of Scala Programming Language. What is the latest version of Scala? Who developed Scala Programming language? How do you define a method in Scala? Difference between an object and class in Scala. How do you create a singleton object in Scala? Difference between val and lazy val in Scala. What is trait in Scala? Does Scala allow methods in case classes? What is case class in Scala? What are the reserved keywords in Scala? How do I use Scala reserved keyword as identifier? What is Unit in Scala? How to define class in Scala? What is a Function in Scala? What is a Main method in Scala? What is “Any” type in Scala? What is the equivalent type for java.lang.Object in Scala? Explain AnyRef class in Scala. Is Scala a functional language? What are the predefined value types in Scala? Type Casting in Scala. Can we set default values for class parameters in Scala? What is the rule for Scala named arguments? How do you import all the classes from a package in Scala? How to create constructor parameters as private in Scala? Can a trait extend another trait in Scala? Is Subtyping using trait allowed in Scala? Can Scala classes extend more than one class? What are mixins in Scala? What are abstract types in Scala? What is the advantage of using higher order functions in Scala? Advantages of nested method in Scala. What is method currying in Scala? How == works with Case classes? Can we reassign the parameter value for case class? What are Sealed classes in Scala? What is SBT tool? Explain the implicit keyword in Scala. Is Java increment operator supported in Scala? Difference between Scala.List and java.util.List. What is Play framework?
Show more question and Answers...

Scala programs

Comments & Discussions

Interviews Questions

About Javapedia.net

Javapedia.net is for Java and J2EE developers, technologist and college students who prepare of interview. Also this site includes many practical examples.

This site is developed using J2EE technologies by Steve Antony, a senior Developer/lead at one of the logistics based company.

Follow Javapedia updates

contact: javatutorials2016[at]gmail[dot]com

Kindly consider donating for maintaining this website. Thanks.

Copyright © 2026, javapedia.net, all rights reserved. · .

DMCA.com Protection Status