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Program to convert Java list to Set in Scala
  • Last Updated : 25 Nov, 2019

A java list can be converted to Set in Scala by utilizing toSet method of Java in Scala. Here, we need to import Scala’s JavaConversions object in order to make this conversions work.
Now, lets see some examples and then discuss how it works in details.
Example:1#




// Scala program to convert Java list 
// to Set in Scala
  
// Importing Scala's JavaConversions object
import scala.collection.JavaConversions._
  
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating list in Java
        val list = new java.util.ArrayList[String]()
          
        // Adding string to the list
        list.add("GfG")
          
        // Converting list to set
        val set = list.toSet
          
        // Displays set
        println(set)
      
    }
}
Output:
Set(GfG)

Therefore, a set of string is returned. Here, firstly a list is created where, the string elements are added to it utilizing add method. After that toSet method is utilized in order to convert the stated list to the Set of Strings.
Example:2#




// Scala program to convert Java list 
// to Set in Scala
  
// Importing Scala's JavaConversions object
import scala.collection.JavaConversions._
  
  
// Creating object
object GfG
  
    // Main method
    def main(args:Array[String])
    {
      
        // Creating list in Java
        val list = new java.util.ArrayList[String]()
          
        // Adding string to the list
        list.add("GfG")
        list.add("is a")
        list.add("CS-portal")
          
        // Converting list to set
        val set = list.toSet
          
        // Displays set
        println(set)
          
    }
}
Output:
Set(GfG, is a, CS-portal)

It is same as above example but here one more element is added in the stated list and then its returned here in the Set as output.

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