[JAVA] Read XML data

For reading XML file, there are several approaches to do so, if reading XML node element, it can use Java.xml in an old school approach.

public static void main(String[] args) throws SAXException, IOException, ParserConfigurationException, TransformerException {
 // Initial XML stream setting.
 DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
 DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
 Document document = docBuilder.parse(new File("document.xml"));
 // Loop all nodes inside Element "*".
 NodeList nodeList = document.getElementsByTagName("*");
 for (int i = 0; i < nodeList.getLength(); i++) {
  Node node = nodeList.item(i);
  if (node.getNodeType() == Node.ELEMENT_NODE) 
  { // do something with the current element
    System.out.println(node.getNodeName());
 }
 }
 }

Reference:

http://stackoverflow.com/questions/5386991/java-most-efficient-method-to-iterate-over-all-elements-in-a-org-w3c-dom-docume

Revision at 01-Dec-2021:

It can read file and map to object directly with JAXB API.

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import java.io.File;

public TestResult read(File file) {
  try {
            JAXBContext jaxbTestResultsContext = JAXBContext.newInstance(TestResults.class);
            Unmarshaller jaxbTestResultUnmarshall = jaxbTestResultsContext.createUnmarshaller();
            return (TestResults) jaxbTestResultUnmarshall.unmarshal(file);
        } catch (JAXBException exception) {
            throw new ReportResolveException("Error occurred when initial JAXB object with Test results.", exception);
        }
}