Traiter un ensemble de fichiers en boucle avec XSLT

public class Process {
	public static void main(String[] args) {
		new Process(args[0]);
	}
/**
 * @param folderName
 *            The folder path and name.
 */
 
	public Process(String folderName) {
		if (!folderName.isEmpty()) {
		try {
		// TODO Debug
		System.out.println("Processus of: " + folderName);

		// input file (flat xml) // cette classe met tt dans un seul fichier plat
 
		Xmlprocess sub = new Xmlprocess(folderName);

		StringBuffer flatXml = sub.serialize();
		ByteArrayInputStream xml = new ByteArrayInputStream(flatXml.toString().getBytes());
		// XSL template
		InputStream xslt = getClass().getResourceAsStream("/xslt/transform.xslt");
		// output file
		FileOutputStream output = new FileOutputStream(folderName+ "\\out.xml" );
		//
		XsltParser.parse(xml, xslt, output);

		output.close();
		xslt.close();
		xml.close();
		// TODO Debug
 
		System.out.println("Ouput XML file successfully written to: "+ folderName + "\\schema.xml");
		s_logger.debug("Ouput XML file successfully written to: "+ folderName + "\\schema.xml");
 
	} catch (IOException e) {
		s_logger.error("This  path doesn't exist or is invalid or is empty (check if it's a directory): " + folderName);
	}
	} else {
	// TODO
	s_logger.error("This  path doesn't exist or is invalid or is empty (check if it's a directory): " + folderName);
	// /e.printStackTrace();
	}
    }
}
 

public class Xmlprocess implements XmlSerializer {
 
	/**
	 * The subscriptions root folder path.
	 */
	private String folderName;
 
	public Xmlprocess(String folderName) {
		this.folderName = folderName;
	}
 
	public StringBuffer serialize() throws XmlException {
		StringBuffer xml = new StringBuffer();
 

		File directory = new File(folderName);
		if (directory.exists() && directory.isDirectory()) {
			File[] list = directory.listFiles();
			if (list != null) {
 
		xml.append("<?xmlversion=\"1.0\"encoding=\"utf-8\"?>\n");
 
				// read all the folder content and process each parts
				xml.append("<subscriptions>\n");
 
				// find the subscriptions (subfolders)...
				File[] directories = directory.listFiles(new FileFilter() {
			public boolean accept(File f) {
						return f.isDirectory();
					}
				});
				// ... and process them
 
				int numeroOrdre = 1;
				for (File subfolder : directories) {
					XmlParse xmls = new XmlParse(subfolder.getAbsolutePath(), numeroOrdre);
					xml.append(xmls.serialize());
					numeroOrdre++;
				}
			} else {
				s_logger.debug("This path doesn't exist or is invalid or is empty (check if it's a directory): "+ folderName);
			}
		} else {
			s_logger.debug("This path doesn't exist or is invalid or is empty (check if it's a directory): "+ folderName);
		}
		xml.append("</subscriptions>");
		return xml;
	}
}