ArrayIndexOutOfBoundsException - when parsing a csv file

I want to transform a csv file. My file looks like that:

I am using the opencsv libary to parse my csv. That is my run method to parse the file:

public void run() throws Exception {


        CSVReader reader = new CSVReader(new FileReader(csvFile), ';');
        String [] nextLine;
        int i = -1;
        String fileName = "";
        String companyName = "";
        String currency = "";
        String writerPath;
        List<String> returnList = null;
        List<String> dateList = null;

        while ((nextLine = reader.readNext()) != null && i < 10) {
            String[] line = nextLine;
            System.out.println(line[0]);
            System.out.println(line);
            i++;

            //fileName of the String 
            if(!line[0].contains("NULL")) {
                fileName = line[0];
            }

            writerPath = "C:\\Users\\Desktop\\CSVOutput\\" + fileName + ".csv";
            //write csv file
            CSVWriter writer = new CSVWriter(new FileWriter(writerPath), ';');

            //write Header
            String[] entries = "Name;Date;TotalReturn;Currency".split(";");
            writer.writeNext(entries);

            //create Content

            //companyName of the String 
            if(!line[1].contains("Name")) {
                companyName = line[1];
                System.out.println(companyName);
            }

            //currency 
            if(!line[2].contains("CURRENCY")) {
                currency = line[2];
            }


            //total returns
            returnList = new ArrayList<String>();
            if(line[0].contains("NULL")) {
                for(int j = 3; j <= line.length; j++) {
                    returnList.add(line[j]); // EXCPETION COMES HERE!
                }
            }

            //"Name;Date;TotalReturn;Currency"
            List<String[]> data = new ArrayList<String[]>();
            for(int m = 0; m <= line.length; m++) {
                data.add(new String[] {companyName, "lolo", "hereComesTheDateLater", currency});
            }

            writer.writeAll(data);

            //close Writer
            writer.close();
        }
        System.out.println("Done");


    }

}

I am getting an

java.lang.ArrayIndexOutOfBoundsException: 3039
    at com.TransformCSV.main.ParseCSV.run(ParseCSV.java:78)
    at com.TransformCSV.main.ParseCSV.main(ParseCSV.java:20)

at this line: returnList.add(line[j]);?

Why? What are possible ways to fix that?

I really appreciate your answer!