从逗号分隔的文件中读取int到2D数组中

Question

My code is supposed to read in integer values separated by commas from a file into a 2D array. I am having trouble because of the commas. I cannot remove commas from the original text file. Here is what is in the original text file.

1, 2, 3, 4, 5
6, 7, 8, 9, 0
6, 7, 1, 2, 5
6, 7, 8, 9, 0
5, 4, 3, 2, 1

Here is my attempt at doing it.

int[][] m = new int[5][5];
for (int row = 0; row < 5; row++) {
    for (int col = 0; col < 5; col++) {
        m[row][col] = input.nextInt();
    }
}

This code gives me an InputMismatchException in line 4.

Answer 1

I assume 'input' is a scanner. Update the delimiter to be either a newline or a comma, before you read anything from input:

input.useDelimiter("\\n|\\s*,\\s*");