Working with HashSet and TreeSet : Set « Collections Data Structure « Java

Working with HashSet and TreeSet

Working with HashSet and TreeSet
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.TreeSet;

public class ItemSet {
  public static void main(String args[]) {
    String names[] = { "Item 1", "Item 2", "Item 3"};
    Set moons = new HashSet();
    int namesLen = names.length;
    int index;
    for (int i = 0; i < 100; i++) {
      index = (int) (Math.random() * namesLen);
    Iterator it = moons.iterator();
    while (it.hasNext()) {
    Set orderedMoons = new TreeSet(moons);
    it = orderedMoons.iterator();
    while (it.hasNext()) {

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