[Htmlparser-user] NullPointer Exception: NodeList.add method, htmlparser 1_5

[Riaz u. <ru...@ya...>]

Hi,
I have attached the procedure below, now when I call this procedure it returns a null pointer excetion in the add method. It was working fine when I had it in the main function, but it does not run when I created this procedure, I think I need some java help on this, can someone suggest what I can do?

public static NodeList extractLinkFromSpanTag(String url) throws ParserException
    {
        int i =0;
        
        NodeList nodelistOfLinks = null;
        Parser parser = new Parser(url);
// Step 2. Collecting Tags in a list.
            NodeList list = parser.parse (null);
           
            //news links are at the span tag (time), spanList stores the span tags
// Step 3. Keep only the SPAN tags in spanList.
            NodeList listOfSpanTags = list.extractAllNodesThatMatch(new TagNameFilter ("SPAN"),true);
            
         while(i < listOfSpanTags.size())
            { // Beginning While loop to extract links
                Span spanTag = (Span)listOfSpanTags.elementAt(i);
//                System.out.println(listOfSpanTags.size());
//              We only need SPAN tags with attribute "class = 'recenttimedate'"
//              Move to the link in the span tag
                if(spanTag.getText().equals("span class=recenttimedate"))
                    nodelistOfLinks.add(listOfSpanTags.elementAt(i).getParent());
                i++;
            }// End of while loop to extract links
            while(i < nodelistOfLinks.size())
            {
        System.out.println(nodelistOfLinks.elementAt(i));
        i++;
            }
        
        return nodelistOfLinks;
    }
		
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