Interview questions

Scala interview questions – page 4

136 questions. Tap “Show answer” to check yourself.

  1. In what ways Scala is better than other programming language?

  2. Like Hibernate for Java-based applications, What are the Popular ORM Frameworks available to use in Play/Scala based applications?

  3. What is Either in Scala? What are Left and Right in Scala? Explain Either/Left/Right Design Pattern in Scala?

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

  5. How can you format a string?

  6. What are major differences between Java-Based and Scala-Based Maven Project's structure?

  7. Why Scala does NOT have 'static' keyword? What is the main reason for this decision?

  8. What is the difference between Function and Method in Scala?

  9. What is the difference between Case Object and Object(Normal Object)?

  10. How do you prove that by default, Case Object is Serializable and Normal Object is not?

  11. What is the difference between statically typed and dynamically typed languages?

  12. What is Null in Scala? What is null in Scala? What is difference between Null and null in Scala?

  14. Is it a Language or Platform? Does it support OOP or FP?

  15. What is the usage of isInstanceOf and asInstanceOf methods in Scala? Is there anything similar concept available in Java?

  16. What is Diamond Problem? How Scala solves Diamond Problem?

  17. Is Scala an Expression-Based Language or Statement-Based Language? Is Java an Expression-Based Language or Statement-Based Language?

  18. What is Primary Constructor? What is Secondary or Auxiliary Constructor in Scala?

  19. In Scala, Pattern Matching follows which Design Pattern? In Java, 'isinstanceof' operator follows which Design Pattern?

  20. What is Monad in Scala?

  21. Does Scala support all Functional Programming concepts? Does Java 8 support all Functional Programming concepts?

  22. What is case class? What is case object? What are the Advantages of case class?

  23. What is 'Type Inference' in Scala?

  24. How Scala solves Inheritance Diamond Problem automatically and easily than Java 8?

  25. What is the advantage of Scala?

  27. What is a Companion Object in Scala? What is a Companion Class in Scala? What is the use of Companion Object in Scala?

  28. When compare to Normal Class, What are the major advantages or benefits of a Case-class?

  29. What are the Scala Features?

  30. What is an Higher-Order Function (HOF)?

  31. What are the differences between Case class and Normal Class?

  32. Which IDEs support Play and Scala-Based Applications Development and how?

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