Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

public class Main {

    public static void main(String[] args) throws Exception {
        XPathFactory xpf = XPathFactory.newInstance();
        XPath xPath = xpf.newXPath();
        XPathExpression schoolNameExpression = xPath.compile("SchoolName");
        XPathExpression classNameExpression = xPath.compile("Classes/Class/ClassName");

        InputSource inputSource = new InputSource("input.xml");
        NodeList schoolNodes = (NodeList) xPath.evaluate("/Data/Schools/School", inputSource,
                XPathConstants.NODESET);
        for (int x = 0; x < schoolNodes.getLength(); x++) {
            Node schoolElement = schoolNodes.item(x);
            System.out.println(schoolNameExpression.evaluate(schoolElement, XPathConstants.STRING));
            NodeList classNames = (NodeList) classNameExpression.evaluate(schoolElement, XPathConstants.NODESET);
            for (int y = 0; y < classNames.getLength(); y++) {
                System.out.println(classNames.item(y).getTextContent());
            }
        }
    }
}