XML NodeList is not empty but its node is null

Question

So I have this XML File:

And what I am trying to do is to gain access to the children from "planView" using this code:

File file = new File(fileName);
DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
Document document = documentBuilder.parse(fileName);
NodeList myList = document.getElementsByTagName("planView");     

for (int i = 0; i < myList.getLength(); i++) {
    Node nNode = myList.item(i);
    Element eElement = (Element) nNode;
    System.out.println("idx is " + i +" and node is "  + nNode + " and elem is " + eElement);
}

And this is the output (from System.out.println):

idx is 0 and node is [planView: null] and elem is [planView: null]

Why is the node from the planview null?

Answer 1

Child nodes of planView needs to be accessed via method getChildNodes():

NodeList planViews = document.getElementsByTagName("planView");

for (int i = 0; i < planViews.getLength(); i++) {
  Node planView = planViews.item(i);
  for (int j = 0; j < planView.getChildNodes().getLength(); j++) {
    Node n = planView.getChildNodes().item(j);
    if (n instanceof Element) {
      Element e = (Element) n;
      System.out.println("s: " + e.getAttribute("s"));
    }
  }
}

It prints something like:

s: 0.000e+00
s: 1.000e+01