Can't get Links

[fancy]

http://www.cs.princeton.edu/~blei/
I tried to parser this page and get all the links but failed.
method 1:
NodeFilter filter=new NodeClassFilter(LinkTag.class);
method 2:
NodeFilter filter=new TagNameFilter("a");

what's wrong?

[Derrick Oswald]

How did you apply the filter then?

filter=new TagNameFilter("a");
parser = new HtmlParser ("http://www.cs.princeton.edu/~blei/");
nodes = parser.Parse (filter);

... process nodes

[fancy]

thank you. I got it
I use :
            NodeList nodes = parser.parse(filter);
            NodeIterator iter = nodes.elements();
            Tag tag;
            while(iter.hasMoreNodes()){
                tag=(Tag) iter.nextNode();
                url=tag.getAttribute("href"));
                if(url.endsWiths(".pdf")){
                   //
                }            
            }

I ignored that a may be <a name=""> and url may be null and there hits some exception but I just try-catch it and don't print it.