Scala Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Scala Interview Questions

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Explain the main difference between List and Stream in Scala Collection API? How do we prove that difference? When do we choose Stream?

What are the Popular Scala-Based Frameworks to develop RESTful Web Services or REST API?

What is function currying in Scala?

What are the popular MVC frameworks for Scala Language to develop Web Applications?

Mention the difference between an object and a class ?

What is the equivalent construct of Scala’s Option in Java SE 8? What is the use of Option in Scala?

What are the Scala variables?

What is the difference between :: and #:: in Scala? What is the difference between ::: and #::: in Scala?

Explain ‘Scala higher order’ functions?

What are the four types of scala identifiers ?

What is SBT? What is the best Build Tool to develop Play and Scala Applications?

What are option, some and none in scala?

Why scala prefers immutability?

How Scala supports both Highly Scalable and Highly Performance applications?

What is Option in Scala? What are Some and None? What is Option/Some/None Design Pattern in Scala?

Un-Answered Questions { Scala }

What are the Scala Features?

What is function composition in scala?

What is a nexted function in scala?

What is the result of x+y*z and why?

What is an object in scala?

What is a ‘Scala map’?

Like Java’s java.lang.Object class, what is the super class of all classes in Scala?

Explain what is unit in scala?

What is a multiline expression in scala?

What are the Advantages of Functional Programming (FP) or Advantages of Pure Functions?

Explain trait in scala and its uses?

What does f method in scala string interpolation?

What is an anonymous object in scala?

What is a monad in scala?

List types of identifiers available in scala?

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