Using DOM APIs

Question

Hi all,
I am using the org.w3c.dom api to create a new xml document, say. for eg., as shown below -
<root>
<element>
<child 1> value </child1>
<child 2> value </child2>
</element>
</root>
I used the following code to get this file generated -
try{
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
Document documentDA = builder.newDocument();
Element rootDA = documentDA.createElement("root");
documentDA.appendChild(rootDA);
Node elementDA = rootDA.appendChild(documentDA.createTextNode("element"));
     Node child1 = elementDA.appendChild(documentDA.createTextNode("child1"));
     child1.setTextContent("1");
     Node child2 = elementDA.appendChild(documentDA.createTextNode("child2"));
     child2.setTextContent("desc1");
Once the "element" is created under the root, I would like to know the API to create the two children under this element. I get heirarchy exceptions thrown with the above code. Please help me to resolve the issue and let me know the exact API for creating the children nodes.
Thanks in advance!!!!

Answer 1

You are not adding the elementDA to the root node each time it is created. You only do it after the loop.
This should work better:
          DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
          DocumentBuilder builder = factory.newDocumentBuilder();
          Document documentDA = builder.newDocument();
          Element rootDA = documentDA.createElement("DedicatedAccounts");
          documentDA.appendChild(rootDA);
          Node elementDA = null;
          for (int i = 0; i < 2; i++) {
               elementDA = documentDA.createElement("DedicatedAccount");
               rootDA.appendChild(elementDA);
               Node DAID = documentDA.createElement("DAID");
               Node DADesc = documentDA.createElement("DAdesc");
               DAID.appendChild( documentDA.createTextNode( Integer.toString(i) ) );
               DADesc.appendChild( documentDA.createTextNode( "desc" ) );
               elementDA.appendChild(DAID);
               elementDA.appendChild(DADesc);
          Transformer xformer = TransformerFactory.newInstance().newTransformer();
          xformer.transform(new DOMSource(rootDA), new StreamResult(System.out));- Roy
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