import java.util.ArrayList; import java.util.HashSet; import java.util.Set; public class ListToSet { /** * @author Amarjit Kumar * @category interview questions * * Description: Convert List to set in java with example program * */ public static void main(String[] args) { ArrayList<String> arrList= new ArrayList<>(); arrList.add("Java"); arrList.add("Java"); arrList.add("List to String"); arrList.add("Example Program"); Set<String> strSet = new HashSet<String>(arrList); System.out.println(strSet); System.out.println(arrList); } } /* * Java program to convert list to set. Convert ArrayList of string to HashSet * in java example program How to convert List to Set in java Set<String> strSet * = new HashSet<String>(arrList); HashSet having a constructor which will take * list as an argument. Lets see how to convert list to Set using java program.