1 import java.util.Iterator;
 2 import java.util.TreeSet;
 3 
 4 public class TreeSetTest {
 5 
 6     public static void main(String[] args) {
 7         
 8         TreeSet ts = new TreeSet(new ComparatorByLength());
 9         
10         ts.add("aaaaaaaa");
11         ts.add("zz");
12
 
         ts.add("nbaq");
13         ts.add("cba");
14         ts.add("abc");
15         
16         Iterator it = ts.iterator();
17         
18         while (it.hasNext())
19         {
20             System.out.println(it.next());
21         }
22 
23     }
24 
25 }