Help parse using JAXP

[Patricia Fulk]

Hello,
Can someone help me out. I am trying to load xml into an object and it is giving me problems. The xml is as follows:
<companys>
<company>
<name>test company name</name>
</company>
<model>
<name>Conservative</name>
<max-percent>18</max-percent>
<min-percent>1</min-percent>
<class>
<name>Large Value</name>
<percent>5</percent>
</class>
<class>
<name>Large, Mid, Small Blend</name>
<percent>20</percent>
</class>
</model>
</companys>
I am trying to get the class name and percents into an object but I keep getting a null pointer exception. Here is the code:

String tagName1 = "";
String tagName2 = "";
String tagName3 = "";

String assetClassName = "";
String assetClassPercent = "";

String modelName = "";
String modelMax  = "";
String modelMin  = "";

String categoryName = "";
Hashtable assetClassPercentTable = new Hashtable();

Element root = document.getDocumentElement();
root.normalize();
for (Node node1  = root.getFirstChild(); 
  node1 != null;
  node1  = node1.getNextSibling()) {
if (node1.getNodeType() != Node.ELEMENT_NODE)
continue;
Element anElement = (Element) node1;
tagName1 = anElement.getNodeName();

for(Node node2  = anElement.getFirstChild();
 node2 != null;
 node2  = node2.getNextSibling()) {
if (node2.getNodeType() != Node.ELEMENT_NODE)
continue;
tagName2 = node2.getNodeName();
if (tagName1.equals("company") && tagName2.equals("name")) {
if (node2.getFirstChild().getNodeValue().equalsIgnoreCase(getName())) {
// If we found a matching company
node2 = node2.getNextSibling();// Gets the name text
node2 = node2.getNextSibling();// Gets the control-file element
// Set the control file for this company
this.companyXMLFile = node2.getFirstChild().getNodeValue();
}
}

if (tagName1.equals("model") && tagName2.equals("name")) {
modelName = node2.getFirstChild().getNodeValue(); // Gets the model name text
}

if (tagName1.equals("model") && tagName2.equals("max-percent")) {
modelMax = node2.getFirstChild().getNodeValue();
}

if (tagName1.equals("model") && tagName2.equals("min-percent")) {
modelMin = node2.getFirstChild().getNodeValue();
}

if (tagName1.equals("model") && tagName2.equals("class")) {
assetClassPercentTable.clear();

Element anElement3 = (Element) node2;
for (Node node3  = anElement3.getFirstChild();
 node3 != null;
 node3 = node3.getNextSibling()) {

if (node3.getNodeType() != Node.ELEMENT_NODE)
continue;
tagName3 = node3.getNodeName();
if (tagName3.equals("name")) {
assetClassName = node3.getFirstChild().getNodeValue();
}
if (tagName3.equals("percent")) {
assetClassPercent = node3.getFirstChild().getNodeValue();
assetClassPercentTable.put(assetClassName,assetClassPercent);
}
}
modelList.add(new Model(modelName, modelMin, modelMax, assetClassPercentTable));
}
}
}
}

If someone could help I would really appreciate it.
Thanks,
Trish