如何在java中对csv文件中的整型列进行排序

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class CSVSorter {
    public static void main(String[] args) {
        String csvFile = "path/to/your/csv/file.csv";
        String outputFile = "path/to/your/output/file.csv";
        int sortColumnIndex = 2; // 要排序的整型列的索引

        List<String[]> data = new ArrayList<>();

        try (BufferedReader br = new BufferedReader(new FileReader(csvFile))) {
            String line;
            while ((line = br.readLine()) != null) {
                String[] row = line.split(","); // 根据CSV文件的分隔符进行解析
                data.add(row);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        int[] sortColumn = new int[data.size() - 1]; // 排序列的数组
        for (int i = 1; i < data.size(); i++) {
            sortColumn[i - 1] = Integer.parseInt(data.get(i)[sortColumnIndex]);
        }

        Arrays.sort(sortColumn); // 对排序列进行排序

        List<String[]> sortedData = new ArrayList<>(data);
        for (int i = 1; i < data.size(); i++) {
            int index = Arrays.binarySearch(sortColumn, Integer.parseInt(data.get(i)[sortColumnIndex]));
            sortedData.set(index + 1, data.get(i));
        }

        try (BufferedWriter bw = new BufferedWriter(new FileWriter(outputFile))) {
            for (String[] row : sortedData) {
                bw.write(String.join(",", row));
                bw.newLine();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}