Converting elements in a set to Array: public Object[] toArray() : HashSet « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. HashSet

The first toArray() method will return an Object array containing all the elements in the collection.

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

public class MainClass {

  public static void main(String[] a) {
    String elements[] = { "A", "B", "C", "D", "E" };
    Set set = new HashSet(Arrays.asList(elements));

    Object[] arrObj = set.toArray();

    for (int i = 0; i < arrObj.length; i++) {
      System.out.println(arrObj[i]);
    }

    System.out.println(set); 
  }
}

D
A
C
B
E
[D, A, C, B, E]