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Thread: Problems reading XML file -- casting problem

  1. #1
    Junior Member
    Join Date
    Aug 2013
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    Default Problems reading XML file -- casting problem

    Well as you can probably notice this is my very first post in this forum so i do not really have any idea how to do this properly.
    Below i copied and pasted the full code of one of my little programs.

    The error message shown if i try to launch the program is "Exception in thread "main" java.lang.ClassCastException: com.sun.org.apache.xerces.internal.dom.DeferredTex tImpl cannot be cast to org.w3c.dom.Element
    at studying.MoviesTrying.main(MoviesTrying.java:20)"

    import javax.xml.parsers.*;
    import org.xml.sax.*;
    import org.w3c.dom.*;  // imports
    import java.text.*;
    public class MoviesTrying
    	private static NumberFormat cf = NumberFormat.getCurrencyInstance();
    	public static void main(String[] args)
    		Document doc = getDocument("C:\\Users\\Edi\\Desktop\\Chris\\Program\\eclipse\\eclipse\\workspace\\studies\\movies.xml");
    		//above i use my own method getDocument to create a doc
    		Element root = (Element)doc.getDocumentElement(); 		//at this line i get the error (Line 20) --
                                                                                                    //com.sun.org.apache.xerces.internal.dom.DeferredTextImpl cannot                                               [#]                                                                                            //be cast to org.w3c.dom.Element
    												//at studying.MoviesTrying.main(MoviesTrying.java:20)
    		Element movieElement =  (Element) root.getFirstChild(); //the rest should not be hard to figure out
    																// i use the getMovies method i created below to retrieve
    																//  year, title and price of the movies and move on to the next
    																// element (in the loop)
    		Movie m;
    		while (movieElement != null)
    			m = getMovies(movieElement);
    			String msg = Integer.toString(m.year);
    			msg += " : " + m.title;
    			msg += " ( " + cf.format(m.price) + ").";
    			movieElement = (Element)movieElement.getNextSibling();
    	private static Document getDocument(String name)   //a method to return a doc builder 
    			DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    	//		factory.setValidating(true);
    			DocumentBuilder builder = factory.newDocumentBuilder();
    			return builder.parse(new InputSource(name));
    		}catch(Exception e)
    		return null;
    	private static Movie getMovies(Element e)      // getting the values of the Elements (year is an attribute) from my .xml file
    		String yearString = e.getAttribute("year");
    		int year = Integer.parseInt(yearString);
    		Element tElement = (Element)e.getFirstChild();
    		String title = getTextValue(tElement).trim();
    		Element pElement = (Element)tElement.getNextSibling();
    		String pString = getTextValue(pElement).trim();
    		double price = Double.parseDouble(pString);
    		return new Movie(title,year,price);
    	private static String getTextValue(Node n)
    		return n.getFirstChild().getNodeValue();
    	private static class Movie 
    		public String title;
    		public int year;
    		public double price;
    		public Movie(String title, int year, double price)
    			this.title = title;
    			this.year = year;
    			this.price = price;
    Last edited by jps; August 13th, 2013 at 04:22 PM. Reason: code tags

  2. #2
    Forum VIP
    Join Date
    Jul 2010
    Thanked 329 Times in 305 Posts

    Default Re: Problems reading XML file -- casting problem

    DeferredTextImpl inherits from the Node class, not the Element class. You cannot cast to Element.

    When asking for help, please follow these guidelines to receive better and more prompt help:
    1. Put your code in Java Tags. To do this, put [highlight=java] before your code and [/highlight] after your code.
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  3. The Following User Says Thank You to aussiemcgr For This Useful Post:

    Christian Egger (August 14th, 2013)

  4. #3
    Junior Member
    Join Date
    Aug 2013
    Thanked 0 Times in 0 Posts

    Default Re: Problems reading XML file -- casting problem

    ouhw how have i been that dumb. Great thanks

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