Scala Interview Questions and Answers
Ques:- Why Scala is better than Java? What are the advantages of Scala over Java (Java 8)? Compare to Java What are the major advantages or benefits of Scala?
Ques:- How to implement interfaces in Scala?
Ques:- What is Range in Scala? How to create a Range in Scala?
Ques:- How do we declare a private Primary Constructor in Scala? How do we make a call to a private Primary Constructor in Scala?
Ques:- What are the advantages of Play/Scala stack to develop web applications?
Ques:- What is an Anonymous Function In Scala? What is a Function Literal in Scala? What are the advantages of a Anonymous Function/Function Literal in Scala?
Ques:- Does a Companion object access private members of it’s Companion class in Scala?
Ques:- What is the best Scala style checker tool available for Play and Scala based applications?
Ques:- What is guard in Scala’s for-comprehension construct?
Ques:- What is the best Code-coverage tool available for Play and Scala based applications?
Ques:- What are the major differences between Scala’s Auxiliary constructors and Java’s constructors?
Ques:- What is the default Unit and Functional Testing Framework for Play? What is the default Build Tool for Play? What is the Default Template Engine for Play? What is the built-in Web Server available in Play Framework?
Ques:- In FP, What is the difference between a function and a procedure?
Ques:- How many values of type Nothing have in Scala?
Ques:- How does it work under-the-hood, when we create an instance of a Class without using ‘new’ keyword in Scala? When do we go for this approach?
Ques:- What is the difference between ‘val’ and ‘lazy val’ in Scala? What is Eager Evaluation? What is Lazy Evaluation?
Ques:- What square measure implicit parameters in Scala?
Ques:- What is Scala anonymous function?
Ques:- Mention Some keywords which are used by Java and not required in Scala? Why Scala does not require them?
Ques:- What is Scala?
Ques:- How many operators are there in Scala and Why?
Ques:- What is ‘Application’ in Scala or What is Scala Application? What is ‘App’ in Scala? What is the use of Scala’s App?
Ques:- What is Nothing in Scala? What is Nil in Scala? What is the relationship between Nothing and Nil in Scala?
Ques:- What is default access modifier in Scala?Does Scala have ‘public’ keyword?
Ques:- What is PreDef in Scala?
Ques:- Difference between Scala’s Inner class and Java’s Inner class?
Ques:- What is formula tail in scala?
Ques:- How many public class files are possible to define in Scala source file?
Ques:- Is Scala Statically-Typed Language?
Ques:- What are the differences between Array and ArrayBuffer in Scala?