将字符串转换为多维int数组

Question

I'm having slight trouble converting a string which I am reading from a file into a multidimensional int array having found what I believe are suggestions here .

See this file here for string content.

Essentially I would like to replace the CR and LF so as to create a multi dimensional int array.

As per my code below where could I be going wrong?

public static void fileRead(String fileContent) {
    String[] items = fileContent.replaceAll("\\r", " ").replaceAll("\\n", " ").split(" ");

    int[] results = new int[items.length];

    for (int i = 0; i < items.length; i++) {
        try {
            results[i] = Integer.parseInt(items[i]);

            System.out.println(results[i]);
        } catch (NumberFormatException nfe) {};
    }
}

EDIT: I'm not encountering any errors. The above logic only creates an int array of size two ie results[0] = 5 and results[ 1] = 5

Thanks for any suggestions.

Answer 1

Here's Java 8 solution:

private static final Pattern WHITESPACE = Pattern.compile("\\s+");

public static int[][] convert(BufferedReader reader) {
    return reader.lines()
            .map(line -> WHITESPACE.splitAsStream(line)
                    .mapToInt(Integer::parseInt).toArray())
            .toArray(int[][]::new);
}

Usage (of course you can read from file as well):

int[][] array = convert(new BufferedReader(new StringReader("1 2 3\n4 5 6\n7 8 9")));
System.out.println(Arrays.deepToString(array)); // [[1, 2, 3], [4, 5, 6], [7, 8, 9]]