String classifierString = Utils.getOption('B', options);
String classifierString = Utils.getOption('W', options);
  public void setOptions(String[] options) throws Exception {    String classifierString = Utils.getOption('B', options);    if (classifierString.length() == 0) {      throw new Exception("A classifier must be specified"			  + " with the -B option.");    }    String [] classifierSpec = Utils.splitOptions(classifierString);    if (classifierSpec.length == 0) {      throw new Exception("Invalid classifier specification string");    }    String classifierName = classifierSpec[0];    classifierSpec[0] = "";    setClassifier(Classifier.forName(classifierName, classifierSpec));        // Same for filter    String filterString = Utils.getOption('F', options);    if (filterString.length() == 0) {      throw new Exception("A filter must be specified"			  + " with the -F option.");    }    String [] filterSpec = Utils.splitOptions(filterString);    if (filterSpec.length == 0) {      throw new Exception("Invalid filter specification string");    }    String filterName = filterSpec[0];    filterSpec[0] = "";    setFilter((Filter) Utils.forName(Filter.class, filterName, filterSpec));  }