如何使用java中的特定列对csv文件中的记录进行排序

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

class CSVRecord {
    private String column1;
    private String column2;
    // 添加其他列属性及对应的getter和setter方法

    // 构造方法
    public CSVRecord(String column1, String column2) {
        this.column1 = column1;
        this.column2 = column2;
    }

    // getter和setter方法
    public String getColumn1() {
        return column1;
    }

    public void setColumn1(String column1) {
        this.column1 = column1;
    }

    public String getColumn2() {
        return column2;
    }

    public void setColumn2(String column2) {
        this.column2 = column2;
    }
    // 添加其他列的getter和setter方法
}

List<CSVRecord> records = new ArrayList<>();

try (BufferedReader br = new BufferedReader(new FileReader("input.csv"))) {
    String line;
    while ((line = br.readLine()) != null) {
        String[] columns = line.split(","); // 假设CSV文件以逗号分隔列
        CSVRecord record = new CSVRecord(columns[0], columns[1]); // 创建CSVRecord对象
        records.add(record); // 将记录添加到列表中
    }
} catch (IOException e) {
    e.printStackTrace();
}

Collections.sort(records, new Comparator<CSVRecord>() {
    @Override
    public int compare(CSVRecord record1, CSVRecord record2) {
        // 根据特定列进行比较并排序
        return record1.getColumn1().compareTo(record2.getColumn1());
    }
});

try (FileWriter writer = new FileWriter("output.csv")) {
    for (CSVRecord record : records) {
        writer.write(record.getColumn1() + "," + record.getColumn2() + "\n");
    }
} catch (IOException e) {
    e.printStackTrace();
}