Manually read CSV data in JMeter witn BeanShell

gistfile1.java

import java.text.*;
import java.io.*;
import java.util.*;

String filename = "oprosnik_" + vars.get("fileNum") + ".csv";

ArrayList strList = new ArrayList();     

try {
    File file = new File(filename);

    if (!file.exists()) {
        throw new Exception ("ERROR: file " + filename + " not found");
    }

    BufferedReader bufRdr = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF8"));
    String line = null;
    Integer i = 0;

    while((line = bufRdr.readLine()) != null) {
        strList.add(line);
        i++;
    }

    bufRdr.close();            
    counter = Integer.parseInt(vars.get("counter"));
    if (counter != i) {
	    String[] variables = strList.get(counter).split(",");
	    vars.put("answer",variables[0]);
	    vars.put("answerNum",variables[1]);
	    counter++;
	    vars.put("counter",Integer.toString(counter));
    }
    else {
    	    vars.put("answer","<EOF>");
    	    vars.put("eol","<EOF>");
    	    vars.put("counter","0");
    }
}
catch (Exception ex) {
    IsSuccess = false; 
    log.error(ex.getMessage());
    System.err.println(ex.getMessage());
}
catch (Throwable thex) {
    System.err.println(thex.getMessage());
}