read csv file

  public ArrayList<String> getValuesCsv() throws IOException{

        CSVReader reader = new CSVReader(new FileReader("selenium.csv"),','
);
        String[] nextLine = null;
        ArrayList<String> arrayValues = new ArrayList<String>();

        nextLine = reader.readNext();

        do{

            arrayValues.add(nextLine[0]);

        }while ((nextLine = reader.readNext()) != null);

        return arrayValues;
    }


Collections.sort(arrayValues);