TreeSet Class

·         The TreeSet class also implements Set interface and uses a tree for data storage.

·         Objects are stored in sorted, ascending order and therefore accessing and retrieving an object is much faster.

Example:

import java.util.TreeSet;

class TreeSetDemo

{

   public static void main ( String []args)

   {

      TreeSet objTree = new TreeSet();

      objTree.add("beta");

      objTree.add("gama");

      objTree.add("tera");

      objTree.add("alpha");

      objTree.add("penta");

      System.out.println("Automatically sorted contents of the Tree : \n" + objTree);

   }

}