Error: Java trying to grab DTD and I don't want it to

Question

I have a problem. For my class we are writing a SAX application that reads in an Amazon.com XML file and tries to find the lowest price. The Amazon file is the result of a query to Amazon's database which has been saved to the hard drive (so it's not being grabbed in Java over the web). We are using SAX for this project and I started out by writing a very basic program that simply just notifies when it reaches the beginning/end of a tag just to make sure it's reading the XML file just fine. It runs great when I'm connected to the internet. However, when I'm not connected to the net I get the following error.
======================================================================
java.net.UnknownHostException: xml.amazon.com
     at org.apache.crimson.parser.Parser2.fatal(Parser2.java:3182)
     at org.apache.crimson.parser.Parser2.externalParameterEntity(Parser2.java:2870)
     at org.apache.crimson.parser.Parser2.maybeDoctypeDecl(Parser2.java:1167)
     at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:489)
     at org.apache.crimson.parser.Parser2.parse(Parser2.java:305)
     at org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:442)
     at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
     at javax.xml.parsers.SAXParser.parse(SAXParser.java:281)
     at Test.main(Test.java:22)
Exception in thread "main"======================================================================
I think it's trying to grab the DTD, but I'm not sure. Anyway, my code is extremely basic. Here's what I have:
======================================================================
import javax.xml.parsers.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
import java.io.*;
public class Test extends DefaultHandler
  public static void main(String args[]) throws Exception
    if (args.length == 0)
      System.err.println("Usage: Test <xmlfile>");
    return;
    SAXParserFactory factory = SAXParserFactory.newInstance();
    factory.setNamespaceAware(false);
    factory.setValidating(false);
    SAXParser parser = factory.newSAXParser();
    Test t = new Test();
    parser.parse(new File(args[0]), t);
  public void startDocument()
    System.out.println("At the start of the document");
  public void startElement(String uri, String name, String qName, Attributes attrs)
    System.out.println("Found start element: " + name);
  public void endElement(String uri, String name, String qName)
    System.out.println("Found end element: " + name);
  public void endDocument()
    System.out.println("At the end of the document");
}======================================================================
I cannot turn to the teacher for help as he is just a GTF and doesn't really understand this stufff himself. He just shrugs and says it works on his machine. Anyway, how do I get it so that it will work when not connected to the internet? All I want it to do is read through the XML file. I don't need any validation or anything like that.
If it makes a difference I am using JDK 1.4.

Answer 1

Here's a sample file from an Amazon query:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ProductInfo PUBLIC "-//Amazon.com //DTD  Amazon Product Info//EN" "http://xml.amazon.com/schemas/dev-lite.dtd">
<ProductInfo xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="http://xml.amazon.com/schemas/dev-lite.xsd">
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/0672321815">
      <Asin>0672321815</Asin>
      <ProductName>Building Web Services with Java: Making Sense of XML, SOAP, WSDL and UDDI</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Steve Graham</Author>
         <Author>Simeon Simeonov</Author>
         <Author>Toufic Boubez</Author>
         <Author>Glen Daniels</Author>
         <Author>Doug Davis</Author>
         <Author>Yuichi Nakamura</Author>
         <Author>Ryo Neyama</Author>
      </Authors>
      <ReleaseDate>12 December, 2001</ReleaseDate>
      <Manufacturer>Sams</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/0672321815.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/0672321815.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/0672321815.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$49.99</ListPrice>
      <OurPrice>$34.99</OurPrice>
      <UsedPrice>$32.49</UsedPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/0596001975">
      <Asin>0596001975</Asin>
      <ProductName>Java & XML, 2nd Edition: Solutions to Real-World Problems</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Brett McLaughlin</Author>
      </Authors>
      <ReleaseDate>September, 2001</ReleaseDate>
      <Manufacturer>O'Reilly & Associates</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/0596001975.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/0596001975.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/0596001975.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$44.95</ListPrice>
      <OurPrice>$31.47</OurPrice>
      <UsedPrice>$31.00</UsedPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/1861004370">
      <Asin>1861004370</Asin>
      <ProductName>Beginning Java Databases: JDBC, SQL, J2EE, EJB, JSP, XML</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Kevin Mukhar</Author>
         <Author>Todd Lauinger</Author>
         <Author>John Carnell</Author>
      </Authors>
      <ReleaseDate>August, 2001</ReleaseDate>
      <Manufacturer>Wrox Press Inc</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/1861004370.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/1861004370.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/1861004370.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$39.99</ListPrice>
      <OurPrice>$27.99</OurPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/0789725037">
      <Asin>0789725037</Asin>
      <ProductName>Special Edition Using Java 2 Enterprise Edition (J2EE): With JSP, Servlets, EJB 2.0, JNDI, JMS, JDBC, CORBA, XML and RMI</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Mark Wutka</Author>
      </Authors>
      <ReleaseDate>08 May, 2001</ReleaseDate>
      <Manufacturer>Que</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/0789725037.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/0789725037.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/0789725037.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$49.99</ListPrice>
      <OurPrice>$34.99</OurPrice>
      <UsedPrice>$12.85</UsedPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/0789722755">
      <Asin>0789722755</Asin>
      <ProductName>Domino 5 Web Programming with XML, Java, and JavaScript</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Randall A. Tamura</Author>
         <Author>Randy Tamura</Author>
      </Authors>
      <ReleaseDate>08 August, 2000</ReleaseDate>
      <Manufacturer>Que</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/0789722755.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/0789722755.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/0789722755.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$49.99</ListPrice>
      <OurPrice>$34.99</OurPrice>
      <UsedPrice>$7.47</UsedPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/0130851353">
      <Asin>0130851353</Asin>
      <ProductName>Enterprise Applications Integration with XML and Java</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>JP Morgenthal</Author>
      </Authors>
      <ReleaseDate>31 July, 2000</ReleaseDate>
      <Manufacturer>Prentice Hall PTR</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/0130851353.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/0130851353.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/0130851353.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$44.99</ListPrice>
      <OurPrice>$31.49</OurPrice>
      <UsedPrice>$3.75</UsedPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/0596002785">
      <Asin>0596002785</Asin>
      <ProductName>Java and XML Data Binding</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Brett McLaughlin</Author>
      </Authors>
      <ReleaseDate>May, 2002</ReleaseDate>
      <Manufacturer>O'Reilly & Associates</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/0596002785.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/0596002785.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/0596002785.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$34.95</ListPrice>
      <OurPrice>$24.47</OurPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/0764516582">
      <Asin>0764516582</Asin>
      <ProductName>Java & XML for Dummies</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Barry Burd</Author>
      </Authors>
      <ReleaseDate>15 June, 2002</ReleaseDate>
      <Manufacturer>John Wiley & Sons</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/0764516582.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/0764516582.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/0764516582.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$29.99</ListPrice>
      <OurPrice>$20.99</OurPrice>
      <UsedPrice>$20.46</UsedPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/0201770040">
      <Asin>0201770040</Asin>
      <ProductName>XML and Java: Developing Web Applications (2nd Edition)</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Hiroshi Maruyama</Author>
         <Author>Andy Clark</Author>
         <Author>Makoto Murata</Author>
         <Author>Naohiko Uramoto</Author>
         <Author>Kent Tamura</Author>
         <Author>Yuichi Nakamura</Author>
         <Author>Ryo Neyama</Author>
         <Author>Kazuya Kosaka</Author>
         <Author>Satoshi Hada</Author>
      </Authors>
      <ReleaseDate>13 May, 2002</ReleaseDate>
      <Manufacturer>Addison Wesley Professional</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/0201770040.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/0201770040.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/0201770040.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$49.99</ListPrice>
      <OurPrice>$34.99</OurPrice>
      <UsedPrice>$25.00</UsedPrice>
   </Details>
   <Details url="http://www.amazon.com/exec/obidos/redirect?tag=webservices-20%26creative=D17NVA66ANOQWJ%26camp=2025%26link_code=xm2%26path=ASIN/186100401X">
      <Asin>186100401X</Asin>
      <ProductName>Professional Java XML</ProductName>
      <Catalog>Book</Catalog>
      <Authors>
         <Author>Kal Ahmed</Author>
         <Author>Sudhir Ancha</Author>
         <Author>Andrei Cioroianu</Author>
         <Author>Jay Cousins</Author>
         <Author>Jeremy Crosbie</Author>
         <Author>John Davies</Author>
         <Author>Kyle Gabhart</Author>
         <Author>Steve Gould</Author>
         <Author>Ramnivas Laddad</Author>
         <Author>Sing Li</Author>
      </Authors>
      <ReleaseDate>April, 2001</ReleaseDate>
      <Manufacturer>Wrox Press Inc</Manufacturer>
      <ImageUrlSmall>http://images.amazon.com/images/P/186100401X.01.THUMBZZZ.jpg</ImageUrlSmall>
      <ImageUrlMedium>http://images.amazon.com/images/P/186100401X.01.MZZZZZZZ.jpg</ImageUrlMedium>
      <ImageUrlLarge>http://images.amazon.com/images/P/186100401X.01.LZZZZZZZ.jpg</ImageUrlLarge>
      <ListPrice>$59.99</ListPrice>
      <OurPrice>$41.99</OurPrice>
      <UsedPrice>$41.00</UsedPrice>
   </Details>
</ProductInfo>