Difference between case class and case object?

Question

I am learning Scala and Akka and in my recent lookup for a solution, I found something like

 case class TotalTaxResult(taxAmount:Double)
 case object TaxCalcul         


        

Answer 1

In simple words, Scala is a Object Oriented and Functional programming language. It have features of functional programming like pattern matching with pure object oriented methodology.

Some times, we need to create singleton object without any value like passing some signal for pattern matching. If scala have not concept of case object we just to need to use enum or equals some string value in matching. But this is not a readability in pure Object Oriented language.. In that scenario we are using Case Object

Case classes are used when we need to create multiple objects with different values.