Tutorial 2 example code compilation error about moa HOT 3 CLOSED

public static void main(String[] args) {
    ArffFileStream stream = new ArffFileStream("F:/Phd Research Work/3rd sem/implementation/DataSet/sea.arff", -1);
    stream.prepareForUse();

    Classifier learner = new NaiveBayes();
    learner.setModelContext(stream.getHeader());
    learner.prepareForUse();


    ADWIN drift1 = new ADWIN();
    int numberSamplesCorrect = 0;
    int numberSamples = 0;
    int numberOfChanges = 0;

    while (stream.hasMoreInstances()) {
    	
   // WekaToSamoaInstanceConverterconv = new WekaToSamoaInstanceConverter();
  //  Instances data = conv.samoaInstances(stream);
    	
   // 	Instance trainInst=stream.nextInstance();
       Instance trainInst = (Instance) stream.nextInstance();
        learner.trainOnInstance((com.yahoo.labs.samoa.instances.Instance) trainInst);
        if (learner.correctlyClassifies((com.yahoo.labs.samoa.instances.Instance) trainInst)) {
            drift1.setInput(0);
            numberSamplesCorrect++;

        } else {
            drift1.setInput(1);
        }

        if (drift1.getChange()) {
            learner.resetLearning();
            System.out.println("point of change = " + numberSamples);
            numberOfChanges++;
        }
        numberSamples++;
    }
    System.out.println("Changes detected: " + numberOfChanges);
}// end main