Modify a value of a node

Question

Hi fellow developers
I�m trying to modify a value of a node.
But I think I�m missing something. Please help.
thanks in advance
for(int i=0;i<List.getLength();i++){
                    node=List.item(i);
                    if(node.getChildNodes().item(0).getFirstChild().getNodeValue().equals(projectNum)){
                         projectNum = node.getChildNodes().item(0).getFirstChild().getNodeValue();
                         node.getFirstChild().setNodeValue("333");

Answer 1

Without the dtd, it is not clear why the sample code fails but here are a few pointers that may be of use:
- The j2ee tutorial on java.sun.com:
http://java.sun.com/j2ee/1.4/docs/tutorial/doc/JAXPDOM5.html#wp64575
has a section on 'examing the structure of a dom' .
Excerpt for the above URL:
Note: Important! Text nodes exist under element nodes in a
DOM, and data is always stored in text nodes. Perhaps the most
common error in DOM processing is to navigate to an element
node and expect it to contain the data that is stored in that
element. Not so! Even the simplest element node has a text
node under it that contains the data. For example, given
<size>12</size>, there is an element node (size), and a text
node under it that contains the actual data (12).
http://java.sun.com/j2ee/1.4/docs/tutorial/examples/jaxp/dom/samples/DomEcho02.java is a useful program to analyze the structure of a dom.
- You can try printing the DOM and analyse the structure of DOM. The following URL has a set of useful samples for xml dom processing: http://developers.sun.com/sw/building/codesamples/dom/. In particular the DOMUtils class has two useful static methods for debugging a DOM:
1. printDOM(org.w3c.dom.Node node): Prints the specified node, then prints all of its children.
2. writeXmlToFile(java.lang.String filename, org.w3c.dom.Document document): This method writes a DOM document to a file
http://developers.sun.com/sw/building/codesamples/dom/doc/DOMUtil.java
- http://forum.java.sun.com/forum.jspa?forumID=34 is the forum for java technology & xml.
Hope u find the pointers useful.