DOM Parser demo using DocumentBuilder. - Java Snipplr Social Repository

Revision: 25722

at April 7, 2010 03:49 by PravinChk

Updated Code

import java.io.File;
import java.io.IOException;

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

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;


public class DocumentBuilderDemo {

	
	public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {
		DocumentBuilder db = null;
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		db = dbf.newDocumentBuilder();
		Document doc = db.parse(new File("c:\\simple.xml"));
		
		Element root = doc.getDocumentElement();
		System.out.println(root.getNodeName());
		
		System.out.println("========================================================================");
		
		NodeList nodeList = root.getElementsByTagName("to");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
		
		System.out.println("========================================================================");
		
		nodeList = root.getElementsByTagName("from");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
		
		System.out.println("========================================================================");
		
		nodeList = root.getElementsByTagName("body");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
	
		System.out.println("========================================================================");
	
		
	}

}


/*
The simple.xml file that we used for parsing in above example.


<?xml version="1.0"?>
<msg>
	<note>
		<to>Tom</to>
		<from>Prince</from>
		<heading>Reminder</heading>
		<body>Hello how are u?</body>
	</note>
	<note>
		<to>Sania</to>
		<from>Prince</from>
		<heading>Joking</heading>
		<body>Welcome!!!</body>
	</note>
</msg>

*/

Revision: 25721

at April 7, 2010 03:42 by PravinChk

Updated Code

import java.io.File;
import java.io.IOException;

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

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;


public class DocumentBuilderDemo {

	
	public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {
		DocumentBuilder db = null;
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		db = dbf.newDocumentBuilder();
		Document doc = db.parse(new File("c:\\simple.xml"));
		
		Element root = doc.getDocumentElement();
		System.out.println(root.getNodeName());
		
		System.out.println("========================================================================");
		
		NodeList nodeList = root.getElementsByTagName("to");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
		
		System.out.println("========================================================================");
		
		nodeList = root.getElementsByTagName("from");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
		
		System.out.println("========================================================================");
		
		nodeList = root.getElementsByTagName("body");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
	
		System.out.println("========================================================================");
	
		
	}

}

Revision: 25720

at April 7, 2010 03:39 by PravinChk

Initial Code

import java.io.File;
import java.io.IOException;

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

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;


public class DocumentBuilderDemo {

	
	public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {
		DocumentBuilder db = null;
		DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
		db = dbf.newDocumentBuilder();
		Document doc = db.parse(new File("c:\\simple.xml"));
		
		Element root = doc.getDocumentElement();
		System.out.println(root.getNodeName());
		NodeList nodeList = root.getElementsByTagName("to");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
		
		nodeList = root.getElementsByTagName("from");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
		
		nodeList = root.getElementsByTagName("body");
		
		for (int i = 0; i < nodeList.getLength(); i++) {
			Node node = nodeList.item(i).getFirstChild();
			System.out.println(node.getNodeValue());
		}
		
		NodeList all = root.getChildNodes();
		System.out.println(all.getLength());
		
		Node n = all.item(0);
		System.out.println(n.getFirstChild());
		
	}

}

Initial URL

DocumentBuilderDemo.java

Initial Description

Code is to demonstrate the use of DocumentBuilder to parse the XML file. And retrieve the data from it.

Initial Title

DOM Parser demo using DocumentBuilder.

Initial Tags

DOM, xml

Initial Language

Java

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