def load_model(self, model, arff):
     try:
         j48 = J48()
         options = ('-i', '-l', model, '-T', arff)
         objectInputFileName = Utils.getOption('l', options);
         if len(objectInputFileName) == 0:
             print "No training file and no object input file given."
             raise
         inputStream = InputStream
         inputStream = FileInputStream(objectInputFileName)
         objectInputStream = ObjectInputStream(inputStream)
         j48 = objectInputStream.readObject()
         return j48
     except:
         raise