/**
 * BTreeInterface.java
 *
 *
 * Created: Tue Oct 15 23:32:32 2002
 *
 * @author <a href="mailto:bina@cse.buffalo.edu "</a>
 * @version
 */
package binaryTree;
import java.util.*;

public interface BTreeInterface {
   void setData(Object o);
   void setLeft(BTree bt);
   void setRight(BTree bt);
   Object getData();
   BTree getLeft();
   BTree getRight();
   int size();
   boolean isEmpty();
   ListIterator preorderTraversal();
}// BTreeInterface