MainClass.java Source code

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Here is the source code for MainClass.java

Source

import java.io.*;

import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import org.apache.xerces.parsers.DOMParser;

public class MainClass {
    public void processNode(Node node, String spacer) throws IOException {
        if (node == null)
            return;
        switch (node.getNodeType()) {
        case Node.ELEMENT_NODE:
            String name = node.getNodeName();
            System.out.print(spacer + "<" + name);
            NamedNodeMap nnm = node.getAttributes();
            for (int i = 0; i < nnm.getLength(); i++) {
                Node current = nnm.item(i);
                System.out.print(" " + current.getNodeName() + "= " + current.getNodeValue());
            }
            System.out.print(">");
            NodeList nl = node.getChildNodes();
            if (nl != null) {
                for (int i = 0; i < nl.getLength(); i++) {
                    processNode(nl.item(i), "");
                }
            }
            System.out.println(spacer + "</" + name + ">");
            break;
        case Node.TEXT_NODE:
            System.out.print(node.getNodeValue());
            break;
        case Node.CDATA_SECTION_NODE:
            System.out.print("" + node.getNodeValue() + "");
            break;
        case Node.ENTITY_REFERENCE_NODE:
            System.out.print("&" + node.getNodeName() + ";");
            break;
        case Node.ENTITY_NODE:
            System.out.print("<ENTITY: " + node.getNodeName() + "> </" + node.getNodeName() + "/>");
            break;
        case Node.DOCUMENT_NODE:
            NodeList nodes = node.getChildNodes();
            if (nodes != null) {
                for (int i = 0; i < nodes.getLength(); i++) {
                    processNode(nodes.item(i), "");
                }
            }
            break;
        case Node.DOCUMENT_TYPE_NODE:
            DocumentType docType = (DocumentType) node;
            System.out.print("<!DOCTYPE " + docType.getName());
            if (docType.getPublicId() != null) {
                System.out.print(" PUBLIC " + docType.getPublicId() + " ");
            } else {
                System.out.print(" SYSTEM ");
            }
            System.out.println(" " + docType.getSystemId() + ">");
            break;
        default:
            break;
        }
    }

    public static void main(String[] args) {
        String uri = "test.xml";
        try {
            bookDescDOM bd = new bookDescDOM();
            System.out.println("Parsing XML File: " + uri + "\n\n");
            DOMParser parser = new DOMParser();
            parser.setFeature("http://xml.org/sax/features/validation", true);
            parser.setFeature("http://xml.org/sax/features/namespaces", false);
            parser.parse(uri);
            Document doc = parser.getDocument();
            bd.processNode(doc, "");
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("Error: " + e.getMessage());
        }
    }
}