code: public static TextClassifier getClassifier(File resourceDirectoryFile)
  			throws Exception {
  		// check whether we need to unzip the resources first
  		if (resourceDirectoryFile.toString().endsWith(".zip")
  				&& resourceDirectoryFile.isFile()) {
  			resourceDirectoryFile = UnZip.unzip(resourceDirectoryFile);
  		}
  		// check the existence of the path
  		if (resourceDirectoryFile.exists() == false)
  			throw new IOException("Directory "
  					+ resourceDirectoryFile.getAbsolutePath()
  					+ " does not exist");
  		// check that the lexicon files exists (e.g. its name should be simply
  		// 'lexicon')
  		File lexiconFile = new File(resourceDirectoryFile,
  				Parameters.lexiconName);
  		if (lexiconFile.exists() == false)
  			throw new IOException("Lexicon " + lexiconFile + " does not exist");
  		// and that there is a model file
  		File modelFile = new File(resourceDirectoryFile, Parameters.modelName);
  		if (modelFile.exists() == false)
  			throw new IOException("Model " + modelFile + " does not exist");
  		Lexicon lexicon = new Lexicon(lexiconFile.toString());
  		// ask the Lexicon for the classifier to use
  		String classifier = lexicon.getClassifierType();
  		TextClassifier instance = (TextClassifier) Class.forName(classifier)
  				.newInstance();
  		// set the last modification info
  		instance.lastmodifiedLexicon = lexiconFile.lastModified();
  		// set the pathResourceDirectory
  		instance.pathResourceDirectory = resourceDirectoryFile
  				.getAbsolutePath();
  		// set the model
  		instance.lexicon = lexicon;
  		instance.loadModel();
  		return instance;
  	}
docs: Returns a specific instance of a Text Classifier given a resource
  Directory
  
  @throws Exception