Oracle XML DOM parser - attribute values are not printing on the screen ??

Question

Hi Everyone,
I am just trying to use oracle DOM parser to paerse one of my xml file, java file can be compiled and run agianst a xml file, But I cannot see any attribute values printing on the screen..
Appreciate if anyone can help, where I have gone wrong please?
Below is the java file:
// menna puthe DOMSample eka - duwanawa 19/12/2005
import java.io.*;
import java.net.*;
import org.w3c.dom.*;
import org.w3c.dom.Node;
import oracle.xml.parser.v2.*;
public class DOMSample {  //public class eka ***
static public void main(String[] argv){  // main method eka ###
try {
if (argv.length != 1){
// Must pass in the name of the XML file...
System.err.println("Usage: java DOMSample filename");
System.exit(1);
// Get an instance of the parser
DOMParser parser = new DOMParser();
// Generate a URL from the filename.
URL url = createURL(argv[0]);
// Set various parser options: validation on,
// warnings shown, error stream set to stderr.
parser.setErrorStream(System.err);
parser.showWarnings(true);
// Parse the document.
parser.parse(url);
// Obtain the document.
Document doc = parser.getDocument();
// Print document elements
System.out.print("The elements are: ");
printElements(doc);
// Print document element attributes
System.out.println("The attributes of each element are: ");
printElementAttributes(doc);
catch (Exception e){
System.out.println(e.toString());
} // main method eka ###
static void printElements(Document doc) {
NodeList nl = doc.getElementsByTagName("*");
Node n;
for (int i=0; i<nl.getLength(); i++){
n = nl.item(i);
System.out.print(n.getNodeName() + " ");
System.out.println();
static void printElementAttributes(Document doc){
NodeList nl = doc.getElementsByTagName("*");
Element e;
Node n;
NamedNodeMap nnm;
String attrname;
String attrval;
int i, len;
len = nl.getLength();
for (int j=0; j < len; j++){
e = (Element)nl.item(j);
System.out.println(e.getTagName() + ":");
nnm = e.getAttributes();
if (nnm != null){
for (i=0; i<nnm.getLength(); i++){
n = nnm.item(i);
attrname = n.getNodeName();
attrval = n.getNodeValue();
System.out.print(" " + attrname + " = " + attrval);
System.out.println();
static URL createURL(String filename) {  // podi 3 Start
URL url = null;
try {
url = new URL(filename);
} catch (MalformedURLException ex) { /// BBBBBB
try {
File f = new File(filename);
url = f.toURL();
} catch (MalformedURLException e) {
System.out.println("Cannot create URL for: " + filename);
System.exit(0);
} // BBBBBB
return url;
} // podi 3 End
} //public class eka ***
// End of program
output comes as below:
Isbn:
Title:
Price:
Author:
Message was edited by:
chandanal

Answer 1

Hi Chandanal,
I edited your code slightly and I was able to get the correct output.
I changed the following line:
for (int j=0; j >< len; j++)to:
for (int j=0; j < len; j++)I have included the complete source below:
// menna puthe DOMSample eka - duwanawa 19/12/2005
import java.io.*;
import java.net.*;
import org.w3c.dom.*;
import org.w3c.dom.Node;
import oracle.xml.parser.v2.*;
public class DOMSample {
    //public class eka ***
    public static void main(String[] argv) {
        // main method eka ###
        try {
            if (argv.length != 1) {
                // Must pass in the name of the XML file...
                System.err.println("Usage: java DOMSample filename");
                System.exit(1);
            // Get an instance of the parser
            DOMParser parser = new DOMParser();
            // Generate a URL from the filename.
            URL url = createURL(argv[0]);
            // Set various parser options: validation on,
            // warnings shown, error stream set to stderr.
            parser.setErrorStream(System.err);
            parser.showWarnings(true);
            // Parse the document.
            parser.parse(url);
            // Obtain the document.
            Document doc = parser.getDocument();
            // Print document elements
            System.out.print("The elements are: ");
            printElements(doc);
            // Print document element attributes
            System.out.println("The attributes of each element are: ");
            printElementAttributes(doc);
        } catch (Exception e) {
            System.out.println(e.toString());
    // main method eka ###
    static void printElements(Document doc) {
        NodeList nl = doc.getElementsByTagName("*");
        Node n;
        for (int i = 0; i < nl.getLength(); i++) {
            n = nl.item(i);
            System.out.print(n.getNodeName() + " ");
        System.out.println();
    static void printElementAttributes(Document doc) {
        NodeList nl = doc.getElementsByTagName("*");
        Element e;
        Node n;
        NamedNodeMap nnm;
        String attrname;
        String attrval;
        int i, len;
        len = nl.getLength();
        for (int j = 0; j < len; j++) {
            e = (Element)nl.item(j);
            System.out.println(e.getTagName() + ":");
            nnm = e.getAttributes();
            if (nnm != null) {
                for (i = 0; i < nnm.getLength(); i++) {
                    n = nnm.item(i);
                    attrname = n.getNodeName();
                    attrval = n.getNodeValue();
                    System.out.print(" " + attrname + " = " + attrval);
            System.out.println();
    static URL createURL(String filename) {
        // podi 3 Start
        URL url = null;
        try {
            url = new URL(filename);
        } catch (MalformedURLException ex) {
            /// BBBBBB
            try {
                File f = new File(filename);
                url = f.toURL();
            } catch (MalformedURLException e) {
                System.out.println("Cannot create URL for: " + filename);
                System.exit(0);
        // BBBBBB
        return url;
    // podi 3 End
} //public class eka ***-Blaise