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How to convert Java Set to String in Scala?

By IncludeHelp Last updated : November 14, 2024

Java Set

Java Set is a collection of objects in java in which no two elements can have the same values i.e., no duplicates are allowed.

Scala Strings

String is an immutable collection that stores sequences of characters.

Scala programming language has a plus point that it can used java’s functions and data in its program as its build on it. This helps us to convert java set to string in Scala.

Convert Java Set to String

We can perform this conversion operation by using the toString method present in java in Scala program. This is done by importing the javaConversions object present in Scala library.

Syntax

javaSet.toString

Example to Convert Java Set to String

import scala.jdk.CollectionConverters._

object myObject { 
  def main(args: Array[String]): Unit = {
    val javaSet = new java.util.HashSet[Int]() 
    javaSet.add(4535) 
    javaSet.add(2003) 
    javaSet.add(111) 
    
    val scalaString = javaSet.toString 
    println("The string conversion of java set is " + scalaString) 
  } 
}

Output

The string conversion of java set is [111, 2003, 4535]

Example 2

import scala.jdk.CollectionConverters._

object myObject { 
  def main(args: Array[String]): Unit = {
    val javaSet = new java.util.HashSet[Int]() 
    javaSet.add(32) 
    javaSet.add(100)
    javaSet.add(111)
    javaSet.add(100) 
    
    val scalaString = javaSet.toString 
    println("The string conversion of java set is " + scalaString) 
  } 
}

Output

The string conversion of java set is [32, 100, 111]