如何在java中将文件读入到二维数组中？

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public static int[][] readFromFile(String filePath) {
    int[][] array = null;
    try (BufferedReader br = new BufferedReader(new FileReader(filePath))) {
        String line;
        int rowCount = 0;
        while ((line = br.readLine()) != null) {
            String[] data = line.split(",");
            if (array == null) {
                array = new int[data.length][];
            }
            array[rowCount] = new int[data.length];
            for (int i = 0; i < data.length; i++) {
                array[rowCount][i] = Integer.parseInt(data[i]);
            }
            rowCount++;
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    return array;
}

public static void main(String[] args) {
    String filePath = "path/to/your/file.txt";
    int[][] array = readFromFile(filePath);
    if (array != null) {
        for (int[] row : array) {
            for (int value : row) {
                System.out.print(value + " ");
            }
            System.out.println();
        }
    }
}