A java Set can be converted to a Traversable collection in Scala by utilizing toTraversable 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#
import scala.collection.JavaConversions. _
object GfG
{
def main(args : Array[String])
{
val set = new java.util.HashSet[Int]()
set.add( 9 )
set.add( 10 )
set.add( 11 )
val tra = set.toTraversable
println(tra)
}
}
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Therefore, a Traversable collection is returned. Here, firstly a set is created where, integer elements are added to it utilizing add method. After that toTraversable method is utilized in order to convert the stated set to a Traversable collection.
Example:2#
import scala.collection.JavaConversions. _
object GfG
{
def main(args : Array[String])
{
val set = new java.util.HashSet[Int]()
set.add( 7 )
set.add( 6 )
set.add( 5 )
val tra = set.toTraversable
println(tra)
}
}
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It is same as above example but here the elements of the set are not present in a proper order. But the traversable returned is in proper order.