import java.io.*;
public class Example
{
    BufferedReader in;
    PrintWriter out;

    public Example()
    {
        try {
            startUp();
        } catch(Exception e) {
            System.err.println("An error occured");
            e.printStackTrace();
        }
    }
    
    private void startUp() throws Exception
    {
        //Creating your reader and writer
        String file = "YourFile.txt";
        in = new BufferedReader(
            new InputStreamReader(
                getClass().getClassLoader().getResourceAsStream(file)));
        out = new PrintWriter(file);
        
        /*
         * How to read lines
         * This loops through the file, reading one line at a time
         * until it reaches the end. With each line it just prints
         * it out, however for you you'd manipulate it and store
         * it in your arrays.
         */
        String line;
        while((line = in.readLine()) != null)
            System.out.println(line);
        
        /*
         * How to write lines
         * This writes:
         * ------------
         * Hi this is
         * a demonstration
         * on writing to
         * files!
         * ------------
         * to the file.
         */
        String[] lines = {
            "Hi this is",
            "a demonstration",
            "on writing to",
            "files!"};
        for(String lineToWrite : lines)
            out.println(lineToWrite);
    }
}

/*
 * I assume you've created your BufferedReader and called it "in"
 * This also instead of just reading 3 questions, it reads however
 * many questions there are in the file.
 */
import java.util.List;
import java.util.ArrayList;

List<String>
	question = new ArrayList<String>(),
	answer_a = new ArrayList<String>(),
	answer_b = new ArrayList<String>(),
	answer_c = new ArrayList<String>(),
	answer_d = new ArrayList<String>(),
	answer_correct = new ArrayList<String>();
String line;
while((line = in.readLine()) != null)
{ try {
	question.add(line.substring(0, line.indexOf(',')));
	line = line.substring(line.indexOf(',') + 1, line.length());
	answer_a.add(line.substring(0, line.indexOf(',')));
	line = line.substring(line.indexOf(',') + 1, line.length());
	answer_b.add(line.substring(0, line.indexOf(',')));
	line = line.substring(line.indexOf(',') + 1, line.length());
	answer_c.add(line.substring(0, line.indexOf(',')));
	line = line.substring(line.indexOf(',') + 1, line.length());
	answer_d.add(line.substring(0, line.indexOf(',')));
	line = line.substring(line.indexOf(',') + 1, line.length());
	answer_correct.add(line.substring(0, line.indexOf(',')));
} catch(Exception e) {}}
//If you really need it in arrays:
String[]
	q = question.toArray(),
	a = answer_a.toArray(),
	//etc

int maxQuestions = 3;
int questionCount;
String[][] data = new String[maxQuestions][8];

for (int count = 0; count < maxQuestions; count++)
{
    line = in.readLine();
    if (line == null) break;
    for (int field = 0; field < 7; field++)
    {
        data[count][field] = line.substring(0, line.indexOf(','));
        line = line.substring(line.indexOf(',') + 1);
    }
    data[count][field] = line;
}
questionCount = count;

if (line.indexOf(',') < 0) break;