import java.util.HashSet; public class Main { public static void main(String[] args) { HashSet<String> cars = new HashSet<String>(); cars.add("Volvo"); cars.add("BMW"); cars.add("Ford"); cars.add("Mazda"); String[] carsArray = new String[cars.size()]; carsArray = cars.toArray(carsArray); for (String item : carsArray) { System.out.println(item); } } }