Problem with JAXP

Question

I have a following xml file AddressBook.xml
<?xml version = �1.0�?>
<addressbook>
<person>
<lastname>Idris</lastname>
<firstname>Nazmul</firstname>
<company>The Bean Factory, LLC.</company>
<email>[email protected]</email>
</person>
</addressbook>
and following java file
// JaxpXmlDomExample.java
// Core Java APIs
import java.io.File;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
// JAXP
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
// DOM
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.NamedNodeMap;
* Used to provide an example of how to build a DOM Tree from an example XML
* file provided on the command line. This example uses Sun Microsystem's JAXP
* API's.
* COMPILE:
* javac JaxpXmlDomExample.java
* RUN PROGRAM:
* java JaxpXmlDomExample AddressBook.xml
public class JaxpXmlDomExample {
private static void printNode(Node node, String indent) {
switch (node.getNodeType()) {
case Node.DOCUMENT_NODE:
System.out.println("<xml version=\"1.0\">\n");
// recurse on each child
NodeList nodes = node.getChildNodes();
if (nodes != null) {
for (int i=0; i<nodes.getLength(); i++) {
printNode(nodes.item(i), "");
break;
case Node.ELEMENT_NODE:
String name = node.getNodeName();
System.out.print(indent + "<" + name);
NamedNodeMap attributes = node.getAttributes();
for (int i=0; i<attributes.getLength(); i++) {
Node current = attributes.item(i);
System.out.print(
" " + current.getNodeName() +
"=\"" + current.getNodeValue() +
System.out.print(">");
// recurse on each child
NodeList children = node.getChildNodes();
if (children != null) {
for (int i=0; i<children.getLength(); i++) {
printNode(children.item(i), indent + " ");
System.out.print("</" + name + ">");
break;
case Node.TEXT_NODE:
System.out.print(node.getNodeValue());
break;
public static void main(String[] args) {
if (args.length != 1) {
System.err.println ("\nUsage: java JaxpXmlDomExample filename\n");
System.exit (1);
// Create File object from incoming file
File xmlFile = new File(args[0]);
try {
// Get Document Builder Factory
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
// Turn on validation, and turn off namespaces
factory.setValidating(true);
factory.setNamespaceAware(false);
// Obtain a document builder object
DocumentBuilder builder = factory.newDocumentBuilder();
System.out.println();
System.out.println("Passed in File : " + args[0]);
System.out.println("Object to Parse (File) : " + xmlFile);
System.out.println("Parser Implementation : " + builder.getClass());
System.out.println();
// Parse the document
Document doc = builder.parse(xmlFile);
// Print the document from the DOM tree and feed it an initial
// indentation of nothing
printNode(doc, "");
System.out.println("\n");
} catch (ParserConfigurationException e) {
System.out.println("The underlying parser does not support " + "the requested features.");
e.printStackTrace();
} catch (FactoryConfigurationError e) {
System.out.println("Error occurred obtaining Document Builder " + "Factory.");
e.printStackTrace();
} catch (Exception e) { e.printStackTrace();}
The above java program cmpiles perfectly, but when I try to exeecute the program
( c:\>java JaxpXmlDomExample AddressBook.xml )
the following error occuring:-
java.lang.SecurityException: sealing violation
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
at org.apache.crimson.jaxp.DocumentBuilderFactoryImpl.newDocumentBuilder
(DocumentBuilderFactoryImpl.java:88)
at JaxpXmlDomExample.main(JaxpXmlDomExample.java:113)
Please tel me ASAP what should I do.
I am using
O/S :: Windows 2000
JDK :: 1.4.0
JAXP :: 1.1ea2 (Early Access 2)
Regards

Answer 1

Sealing violations usually mean that you are compiling with one version of a jar file, and trying to run against another.