MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.io.IOException;
import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;

public class MainClass {
    static public void main(String[] arg) {
        boolean validate = false;

        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        dbf.setValidating(validate);
        dbf.setNamespaceAware(true);
        dbf.setIgnoringElementContentWhitespace(true);

        Document doc = null;
        try {
            DocumentBuilder builder = dbf.newDocumentBuilder();
            doc = builder.parse(new InputSource(new StringReader(xmlString)));
        } catch (SAXException e) {
            System.exit(1);
        } catch (ParserConfigurationException e) {
            System.err.println(e);
            System.exit(1);
        } catch (IOException e) {
            System.err.println(e);
            System.exit(1);
        }

        TreeDumper td = new TreeDumper();
        td.dump(doc);
    }

    static String xmlString = "<PHONEBOOK>" + "  <PERSON>" + "   <NAME >Joe Wang</NAME>"
            + "   <EMAIL property=\"working\">joe@yourserver.com</EMAIL>" + "   <TELEPHONE>202-999-9999</TELEPHONE>"
            + "   <WEB>www.java2s.com</WEB>" + "  </PERSON>" + "  <PERSON>   " + "<NAME>Karol</NAME>"
            + "   <EMAIL>karol@yourserver.com</EMAIL>" + "   <TELEPHONE>306-999-9999</TELEPHONE>"
            + "   <WEB>www.java2s.com</WEB>" + "  </PERSON>" + "  <PERSON>" + "   <NAME>Green</NAME>"
            + "   <EMAIL>green@yourserver.com</EMAIL>" + "   <TELEPHONE>202-414-9999</TELEPHONE>"
            + "   <WEB>www.java2s.com</WEB>" + "  </PERSON>" + "  </PHONEBOOK>";
}

class TreeDumper {
    public void dump(Document doc) {
        dumpLoop((Node) doc, "");
    }

    private void dumpLoop(Node node, String indent) {
        switch (node.getNodeType()) {
        case Node.CDATA_SECTION_NODE:
            System.out.println(indent + "CDATA_SECTION_NODE");
            break;
        case Node.COMMENT_NODE:
            System.out.println(indent + "COMMENT_NODE");
            break;
        case Node.DOCUMENT_FRAGMENT_NODE:
            System.out.println(indent + "DOCUMENT_FRAGMENT_NODE");
            break;
        case Node.DOCUMENT_NODE:
            System.out.println(indent + "DOCUMENT_NODE");
            break;
        case Node.DOCUMENT_TYPE_NODE:
            System.out.println(indent + "DOCUMENT_TYPE_NODE");
            break;
        case Node.ELEMENT_NODE:
            System.out.println(indent + "ELEMENT_NODE");
            break;
        case Node.ENTITY_NODE:
            System.out.println(indent + "ENTITY_NODE");
            break;
        case Node.ENTITY_REFERENCE_NODE:
            System.out.println(indent + "ENTITY_REFERENCE_NODE");
            break;
        case Node.NOTATION_NODE:
            System.out.println(indent + "NOTATION_NODE");
            break;
        case Node.PROCESSING_INSTRUCTION_NODE:
            System.out.println(indent + "PROCESSING_INSTRUCTION_NODE");
            break;
        case Node.TEXT_NODE:
            System.out.println(indent + "TEXT_NODE");
            break;
        default:
            System.out.println(indent + "Unknown node");
            break;
        }
        NodeList list = node.getChildNodes();
        for (int i = 0; i < list.getLength(); i++)
            dumpLoop(list.item(i), indent + "   ");
    }
}