将文本文件加载到HashMap<Integer中，List<String>> java

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Scanner;

public class FileLoader {
    public static void main(String[] args) {
        String filePath = "path/to/your/text/file.txt";
        HashMap<Integer, List<String>> map = loadFileToHashMap(filePath);
        // 使用加载后的HashMap进行后续操作
    }

    public static HashMap<Integer, List<String>> loadFileToHashMap(String filePath) {
        HashMap<Integer, List<String>> map = new HashMap<>();
        try {
            File file = new File(filePath);
            Scanner scanner = new Scanner(file);
            int lineNumber = 1;
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                if (!line.isEmpty()) {
                    if (!map.containsKey(lineNumber)) {
                        map.put(lineNumber, new ArrayList<>());
                    }
                    map.get(lineNumber).add(line);
                }
                lineNumber++;
            }
            scanner.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        return map;
    }
}