XML : Transform DOM Tree to XML String in an applet since the JRE 1.4.2_05

Hello,
I build a DOM tree in my applet.
Then I transform it to XML String.
But since the JRE 1.4.2_05 it doesn't work.
These lines failed because these variables became final:
org.apache.xalan.serialize.CharInfo.XML_ENTITIES_RESOURCE = getClass().getResource("XMLEntities.res").toString();
org.apache.xalan.processor.TransformerFactoryImpl.XSLT_PROPERTIES = getClass().getResource("XSLTInfo.properties").toString();The rest of the code :
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = domFactory.newDocumentBuilder();
Document domXML = builder.newDocument();
// I build my DOM Tree
StringWriter xmlResult = new StringWriter();
Source source = new DOMSource(domXML);
Result result = new StreamResult(xmlResult);
Transformer xformer = TransformerFactory.newInstance().newTransformer();
xformer.setOutputProperty(javax.xml.transform.OutputKeys.INDENT,"yes");
xformer.transform(source,result);Is there any other way to get an XML String from a DOM tree in an applet ?
I'm so disappointed to note this big problem.

Does anyone have an idea why I get this error message when try to use transform in an applet?
Thanks...
java.lang.ExceptionInInitializerError
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Unknown Source)
     at org.apache.xalan.serialize.SerializerFactory.getSerializer(Unknown Source)
     at org.apache.xalan.transformer.TransformerIdentityImpl.createResultContentHandler(Unknown Source)
     at org.apache.xalan.transformer.TransformerIdentityImpl.transform(Unknown Source)
     at matrix.CreateMtrx.SaveDoc(CreateMtrx.java:434)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at thinlet.Thinlet.invokeImpl(Unknown Source)
     at thinlet.Thinlet.invoke(Unknown Source)
     at thinlet.Thinlet.handleMouseEvent(Unknown Source)
     at thinlet.Thinlet.processEvent(Unknown Source)
     at java.awt.Component.dispatchEventImpl(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
     at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
     at java.awt.Container.dispatchEventImpl(Unknown Source)
     at java.awt.Component.dispatchEvent(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.RuntimeException: The resource [ XMLEntities.res ] could not load: java.net.MalformedURLException: no protocol: XMLEntities.res
XMLEntities.res      java.net.MalformedURLException: no protocol: XMLEntities.res
     at org.apache.xalan.serialize.CharInfo.<init>(Unknown Source)
     at org.apache.xalan.serialize.SerializerToXML.<clinit>(Unknown Source)
     ... 28 more

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               result.getWriter().toString();
==================
Is it any problem with the implementation ? How to use fileoutputstream with this ?

I have done like this:
DocumentBuilderFactory docBuildFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = docBuildFactory.newDocumentBuilder();
Document doc = builder.newDocument();
Element root = (Element)doc.createElement("Root");
doc.appendChild(root);
Element address = (Element)doc.createElement("Address");
address.appendChild((Element)doc.createElement("Street"));
address.appendChild((Element)doc.createElement("PostCode"));
address.appendChild((Element)doc.createElement("Town"));
Element country = (Element)doc.createElement("Country");
country.setAttribute("type","EU");
Text cname = doc.createTextNode("Spain");
country.appendChild(cname);
address.appendChild(country);
root.appendChild(address);
TransformerFactory tranFactory = TransformerFactory.newInstance();
Transformer aTransformer = tranFactory.newTransformer();
aTransformer.setOutputProperty(OutputKeys.INDENT, "yes");
Source src = new DOMSource(doc);
Result dest = new StreamResult(new FileOutputStream(new File("test.xml")));
aTransformer.transform(src, dest);

XML : Transform DOM Tree to XML String in an applet since the JRE 1.4.2_05

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