使用java更新特定的单元格csv文件

BufferedReader reader = new BufferedReader(new FileReader("file.csv"));
String line;
List<String[]> rows = new ArrayList<>();

while ((line = reader.readLine()) != null) {
    String[] row = line.split(",");
    rows.add(row);
}

reader.close();

// 更新特定单元格的值
rows.get(rowIndex)[columnIndex] = "new value";

BufferedWriter writer = new BufferedWriter(new FileWriter("file.csv"));

for (String[] row : rows) {
    writer.write(String.join(",", row));
    writer.newLine();
}

writer.close();