如何使用StringBuilder将字符串数组列表转换为CSV文件？

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class CSVConverter {
    public static void convertToCSV(List<String[]> dataList, String filePath) {
        StringBuilder csvData = new StringBuilder();

        for (String[] data : dataList) {
            for (int i = 0; i < data.length; i++) {
                csvData.append(data[i]);

                if (i != data.length - 1) {
                    csvData.append(",");
                }
            }
            csvData.append("\n");
        }

        try (BufferedWriter writer = new BufferedWriter(new FileWriter(filePath))) {
            writer.write(csvData.toString());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        // 示例数据
        List<String[]> dataList = new ArrayList<>();
        dataList.add(new String[]{"Name", "Age", "Country"});
        dataList.add(new String[]{"John", "25", "USA"});
        dataList.add(new String[]{"Amy", "30", "Canada"});
        dataList.add(new String[]{"Michael", "35", "UK"});

        // 指定生成的CSV文件路径
        String filePath = "output.csv";

        // 转换为CSV并写入文件
        convertToCSV(dataList, filePath);

        System.out.println("CSV文件已生成：" + filePath);
    }
}