读取csv并编写另一个

Question

下午好，我正在尝试上一堂课，如果一个人擅长并再写一行。

但是我不太了解行和列的工作方式，因此行不通。

有人可以在代码中帮助我吗？

public class ReadCSV{

public static void main( String [] args ) {

        //This worksheet has 5 sample lines and is in csv.  
        String csvFile = "C:\\Users\\Desktop\\test3.csv";
        BufferedReader br = null;
        String cvsSplitBy = ",";
        String transformeisso = "";

        try {

            br = new BufferedReader(new FileReader(csvFile));

            Workbook workbook = new XSSFWorkbook();

            Sheet sheet = workbook.createSheet("Arquivo");
            sheet.setColumnWidth(0, 6000);
            sheet.setColumnWidth(1, 4000);

            int i = 0;
            while (br.readLine() != null && !br.readLine().equals("") ) {


                    String line = br.readLine();        

                    String[] coluna = line.split(cvsSplitBy);

                        if(coluna.length > 1 ) {
                            transformeisso =  coluna[3];
                        }
                           String str = transformeisso.replaceAll("\"", "");

                           //Transform Here's this getemail method to get the email from a string and add in a new column at the end of excel

                           String emails = getemail (str);
                           Row header = sheet.createRow(i); 
                           Cell headerCell = header.createCell(i);
                           headerCell.setCellValue(line);
                           Cell headerCellEmail = header.createCell(i+1);
                           headerCellEmail.setCellValue(emails);
                           i++;


            }

            File currDir = new File("C:\\temp");
            String path = currDir.getAbsolutePath();
            String fileLocation = path.substring(0, path.length() - 1) + "new.xlsx";

            FileOutputStream outputStream = new FileOutputStream(fileLocation);
            workbook.write(outputStream);
            workbook.close();



    } catch ( IOException ex ) {
        ex.printStackTrace();
    }
}

我将其留在此处，这是excel条目以及我希望它如何作为输出的地方。 从字符串中删除电子邮件的方法效果很好...问题我认为这是行和列的计数，我不太了解它是如何工作的... 请帮助我

这有多出色？

https://uploaddeimagens.com.br/imagens/2-png-86fae7f1-9432-46ff-8d01-08de16ac0518

如何保持卓越水平

https://uploaddeimagens.com.br/imagens/1-png-abd02d01-3518-474e-8f80-b97b10db02d6

TKS !!!