parse xml using dom java

Question

I have the bellow xml:

    
        
            wish
             


        

Answer 1

First, when checking the node name you shouldn't compare Strings using ==. Always use the equals method instead.

You can use XPath to evaluate only the document topic elements under listOfDocs:

XPathFactory xPathFactory = XPathFactory.newInstance();
XPath xPath = xPathFactory.newXPath();
XPathExpression xPathExpression = xPath.compile("//listOfDocs//document/topic");

NodeList topicnl = (NodeList) xPathExpression.evaluate(dom, XPathConstants.NODESET);
for(int i = 0; i < topicnl.getLength(); i++) {
   ...