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package csvtoarff;
//import required classes
import weka.core.Instances;
import weka.core.converters.ArffSaver;
import weka.core.converters.CSVLoader;
import java.io.File;

public class Csvtoarff {

  public static void main(String[] args) throws Exception {
        String filenames = "C:/users/ALL_chunk/ALL_chunk";
        for(int i=0; i<=219; i++){
            //LOAD CSV
            String filen = filenames+i+".csv";
            System.out.println(filen);

            CSVLoader loader = new CSVLoader();
            loader.setSource(new File(filen));
            Instances data = loader.getDataSet();//get instances object

            //SAVE TO ARFF
            String outfile = filenames+i+".arff";
            System.out.println(outfile);

            ArffSaver saver = new ArffSaver();
            saver.setInstances(data);//set the dataset we want to convert
            //and save as ARFF
            saver.setFile(new File(outfile));
            saver.writeBatch();
        }
  }
}