Copy all elements of HashSet to an Object Array : HashSet « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. HashSet

import java.util.HashSet;

public class Main {

  public static void main(String[] args) {
    HashSet<Integer> hSet = new HashSet<Integer>();

    hSet.add(new Integer("1"));
    hSet.add(new Integer("2"));
    hSet.add(new Integer("3"));

    Object[] objArray = hSet.toArray();

    for (Object obj : objArray)
      System.out.println(obj);
  }
}