Java将带计算的列添加到CSV文件

import java.io.FileWriter;
import java.io.IOException;

public class CSVWriterExample {
    public static void main(String[] args) {
        String csvFile = "output.csv";
        FileWriter fileWriter = null;

        try {
            fileWriter = new FileWriter(csvFile);

            // 写入表头
            fileWriter.append("Name");
            fileWriter.append(",");
            fileWriter.append("Age");
            fileWriter.append(",");
            fileWriter.append("Age Plus 5");
            fileWriter.append("\n");

            // 写入数据
            String[] names = {"Alice", "Bob", "Charlie"};
            int[] ages = {25, 30, 35};

            for (int i = 0; i < names.length; i++) {
                fileWriter.append(names[i]);
                fileWriter.append(",");
                fileWriter.append(String.valueOf(ages[i]));
                fileWriter.append(",");
                fileWriter.append(String.valueOf(ages[i] + 5));
                fileWriter.append("\n");
            }

            System.out.println("CSV文件写入成功！");
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (fileWriter != null) {
                    fileWriter.flush();
                    fileWriter.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
    }
}

fileWriter = new FileWriter(csvFile, StandardCharsets.UTF_8);