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Finding an ID Value and Print the Element Text
Posted on: August 24, 2008 at 12:00 AM

In this section, you will learn how to fine id value and print the text in a DOM document.

Finding an ID Value and Print the Element Text

This Example gives a way to Find an ID value and Print the Text in a DOM document . The Methods which are used for Finding an ID value in the code are described below :-

Element root = doc.getDocumentElement():-allows direct access to the root of the DOM Document.

Node node=root.getFirstChild().getFirstChild():-Direct access to the subchild of the root .

Text text = (Text) node.getFirstChild():- it Retrives the text of the Node named node

XML code for the program generated is:-

<?xml version="1.0" encoding="UTF-8"?>
<Company>    
<Employee>        
<name Girish="Gi">Roseindia.net</name>
</Employee>    
<Employee>        
<name Komal="Ko">newsTrack</name>    
</Employee>    
<Employee>        
<name Mahendra="Rose">Singh</name>    
</Employee>
</Company>

Findbyid.java :-


/* 

 * @Program that describes a method to find an ID value and print 

  the element text

 * Findbyid.java 

 * Author:-RoseIndia Team

 * Date:-10-Jun-2008

 */



import java.io.*;

import javax.xml.parsers.*;

import org.w3c.dom.*;



public class Findbyid {



  public static void main(String[] args) throws Exception {

  

  DocumentBuilderFactory builderFactory = 

   DocumentBuilderFactory.newInstance();

  builderFactory.setValidating(false);



  Document doc = 

  builderFactory.newDocumentBuilder().parse(

   new File("Document2.xml"));

  new Findbyid().findByID(doc, "Girish");



  }



  public void findByID(Document doc, String idName) {

  Element root = doc.getDocumentElement();

  Node node=root.getFirstChild().getFirstChild();

 

  if (root == null) {

  System.out.println("There is no element with the ID "

    + idName);

  } else {

  Text text = (Text) node.getFirstChild();

  System.out.println(idName + " locates the name " 

  + text.getData());

  }







  }

}

Output of the program:-

Girish locates the name Roseindia.net

DownLoad Source Code

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