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Deleting Two Attributes
Posted on: August 24, 2008 at 12:00 AM

In this section, you will learn how to delete two attributes from a DOM Document.

Deleting Two Attributes

This Example gives the way to deletes Two Attributes from a DOM document. The Methods which are used for deleting Attributes in the code are given below:-

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

root.getNodeName():-gets the name of the root.

String s = root.getAttribute("Type"):-It Retrieves an attribute value by name i.e(Type) & store it in String s.

String s1 = root.getAttribute("Id"):-Retrieves an attribute value by "Id" & store it in String s1.

root.removeAttribute("Type"):- It removes the Specified Attribute "Type" from DOM Document.

Xml code for the program generated is:-

<?xml version="1.0" encoding="UTF-8"?>

<Author Type='Bible' Id='Rose-78' Issue='1995'>
</Author>

DeletingAttributes.java


/* 

 * @Program that Deletes Two Attributes

 * DeletingAttributes.java 

 * Author:-RoseIndia Team

 * Date:-10-Jun-2008

 */



import java.io.*;

import javax.xml.parsers.*;

import org.w3c.dom.*;



public class DeletingAttributes {



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

  boolean validating = false;

  DocumentBuilderFactory factory = 

  DocumentBuilderFactory.newInstance();

  factory.setValidating(validating);



  Document doc = 

  factory.newDocumentBuilder().parse(

  new File("Document3.xml"));

  new DeletingAttributes().delete(doc);

  }



  public void delete(Document doc) {

  Element root = doc.getDocumentElement();

  System.out.println("Name of the root is: " +

   root.getNodeName());

  // Retrieves an attribute value by name.

  String s = root.getAttribute("Type");

  String s1 = root.getAttribute("Id");

  System.out.println("Attributes before deleting are: " 

  + s + "\t" + s1);

  root.removeAttribute("Type");

  root.removeAttribute("Id");

  // Removes an attribute by name

  String n = root.getAttribute("Type");

  String n1 = root.getAttribute("Id");

  System.out.println("Attributes after deleting are: " 

   + n + "\t" + n1);



  }

}

Output of the program:-

Name of the root is: Author
Attributes before deleting are: Bible	Rose-78
Attributes after deleting are:

Download Source Code

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