Contents of META-INF/services/javax.xml.parsers.DocumentBuilderFactory?

Question

I am currently working on an applet that solves Sudoku puzzles, allowing you to build your own in a Constructor and then solve them in a seperate Solver. To do this, we are implementing the puzzles files as XML documents.
I have the code completely complied and on the server ( [sudoku.unl.edu|sudoku.unl.edu]) and it runs NEARLY perfectly, however when trying to access the server to save the xml code, the apache error_log presents this message: "File does not exist: classes/META-INF/services
/javax.xml.parsers.DocumentBuilderFactory"
Looking at the Java Doc here it says that the program should look for that in the jars. I am unsure of exactly how the applet is interacting with the server, but typing "java -version" yields:
java version "1.6.0_11"
Java(TM) SE Runtime Environment (build 1.6.0_11-b03)
Java HotSpot(TM) 64-Bit Server VM (build 11.0-b16, mixed mode)Notably, the code works PERFECTLY in NetBeans, contacting the server using SCP and uploading the file and such, so the code doesn't seem to be the problem, unless I need to direct the DocumentBuilder code somehow. This is the code that I believe is causing the trouble (I have tried to include all relevant imports that are in my code):
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
DocumentBuilderFactory factoryBuilder;
          DocumentBuilder builder;
          Document doc;
          Element docElement;
          try
               factoryBuilder  = DocumentBuilderFactory.newInstance( );
               builder = factoryBuilder.newDocumentBuilder();
               doc = builder.parse( indexLocation );
               docElement = doc.getDocumentElement();
               NodeList children = docElement.getChildNodes();          
               for(int i =0; i < children.getLength(); i++)
                    if(children.item(i).getNodeType() == 1)
                         if((children.item(i).getNodeName()).equals("directory"))
                              if ((children.item(i).getAttributes().getNamedItem("name").getNodeValue()).equals("UsersInput")) {
                                   Node firstChild = findNodeItem(children.item(i), "Difficulty0.." + this.upperField.getText());
                                   Node secondChild = findNodeItem(firstChild, "Level" + this.levelField.getText());
                                   Node thirdChild = findNodeItem(secondChild, (String)suTypeList.getSelectedItem());
                                   Element newFile = doc.createElement("file");
                                   newFile.setAttribute("name", fileName);                              
                                   thirdChild.appendChild(newFile);                              
               SshParameters params = new SshParameters("cse.unl.edu", "consystlab","A/tutti");
            // create new Scp instance
            Scp scp = new Scp(params);
            // register event listener
            scp.addListener(this);
            // establish connection
            scp.connect();
               TransformerFactory tFactory = TransformerFactory.newInstance();
               Transformer transformer = tFactory.newTransformer();
               DOMSource source = new DOMSource(doc);
               StringWriter sw=new StringWriter();
               StreamResult result = new StreamResult(sw);
               transformer.transform(source, result);
               String xmlString=sw.toString();
            // upload file
              scp.upload(xmlString.getBytes(), indexPath, "libraryIndex.xml");
             // disconnect
            scp.disconnect();
          catch (IOException e)
               System.out.println("IO ERROR7");
               System.out.println(e);
          catch (TransformerException tranE){
               tranE.printStackTrace();               
          catch (ParserConfigurationException e)
               System.out.println("IO ERROR8");
               System.out.println(e);
          catch (SAXException e)
               System.out.println("IO ERROR9");
               System.out.println(e);
          }So my question is, what exactly are the contents of the file in the META-INF/services folder? I have manually created this file in my classes directory, where the program is searching. When I place text in it, it appends the text with .class and searches for that file, but doesn't seem to do anything with the file. I attempted directing it to the "DocumentBuilderFactory.class" file that I extracted from the classes.jar included with the JDK.
I feel like all I need is this file to contain the correct content and the code will FINALLY work, but I have not been able to find anything out there on it.
Thank for you for your help, sorry this was such a long message.
-Jason

Answer 1

Thanks!
Thanks for the fast reply. I don't know if I made my point clear.
I do not want to determine the parser by myself. I want the client system use the default parser, so I do not have the hit of downloading the fairly large parser jar.
However, I want it not to do an empty request to the server for nothing. This turn around time kills an Applet. I want a fast loading applet!
I'll go in trial and error mode, when I find the time next week.
Thanks again, I appreciate it!
K<o>