Main.java Source code

Introduction

Here is the source code for Main.java

Source

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSSerializer;

public class Main {
    public static void main(String[] args) throws Exception {
        String exp = "/configs/markets/market";
        String path = "data.xml";

        Document xmlDocument = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(path);

        XPath xPath = XPathFactory.newInstance().newXPath();
        XPathExpression xPathExpression = xPath.compile(exp);
        NodeList nodes = (NodeList) xPathExpression.evaluate(xmlDocument, XPathConstants.NODESET);

        Document newXmlDocument = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
        Element root = newXmlDocument.createElement("root");
        newXmlDocument.appendChild(root);
        for (int i = 0; i < nodes.getLength(); i++) {
            Node node = nodes.item(i);
            Node copyNode = newXmlDocument.importNode(node, true);
            root.appendChild(copyNode);
        }
        printXmlDocument(newXmlDocument);
    }

    public static void printXmlDocument(Document document) {
        DOMImplementationLS domImplementationLS = (DOMImplementationLS) document.getImplementation();
        LSSerializer lsSerializer = domImplementationLS.createLSSerializer();
        String string = lsSerializer.writeToString(document);
        System.out.println(string);
    }
}