/**
 * <H2>Netrand Project</H2>
 * <H4>Software Engineering - CS536</H4>
 * <H4>University of Wisconsin - Milwaukee</H4>
 * <H4>Authors:</H4>
 * <UL>
 * <LI>Spring 1998 - Francis William Kasper
 * </UL>
 * <BR>File: NullLinkExtractor.java <BR>
 *  Note: 
 *  This file was originally part of a Web Crawler program written by
 *  Tim Macinta in 1997 that gathered links form the internet and formed
 *  a web search database.  The files containing the logic for crawling
 *  across the internet were taken from this program and slightly modified
 *  for the purpose of the NetRand project.
 *  <HR>
 *  This LinkExtractor should be used for document types that
 *  don't have hyperlinks.  This is basically an empty enumeration.
 */

public class NullLinkExtractor implements LinkExtractor {

  public NullLinkExtractor() {}

  public boolean hasMoreElements() {
    return false;
  }

  public Object nextElement() {
    throw new java.util.NoSuchElementException();
  }

}