How TreeSet checks for Duplicates

Question

I am checking how TreeSet checks for duplicate elements and have the following code

  import java.util.*;

  public class TreeDemo{

    public static void main(         


        

Answer 1

TreeSet implements a balanced binary search tree based upon ordering of its members (via the Comparable or Comparator interfaces), not on hashing.

http://en.wikipedia.org/wiki/Self-balancing_binary_search_tree