Java去掉文件中的逗号

解析报文的时候遇到只有逗号的文本文件，该方法传入文件地址，获得String数组

    //  去逗号
    public static String[][] readCommaTxT(String pathName) throws IOException {
        File file = new File(pathName);
        if (!file.exists())
            throw new RuntimeException("Not File!");

        BufferedReader br = new BufferedReader(new FileReader(file));
        String str;

        List list = new ArrayList();

        while ((str = br.readLine()) != null) {
            int s = 0;
            String[] arr = str.split(",");
            String[] dArr = new String[arr.length];
            for (String ss : arr) {
                if (ss != null) {
                    dArr[s++] = ss;
                }
            }
            list.add(dArr);
        }
        int max = 0;
        for (int i = 0; i < list.size(); i++) {
            if (max < list.get(i).length)
                max = list.get(i).length;
        }
        String[][] array = new String[list.size()][max];

        for (int i = 0; i < array.length; i++) {
            for (int j = 0; j < list.get(i).length; j++) {

                array[i][j] = list.get(i)[j];
//				System.out.println("a[" + i + "]" + "[" + j + "]" + array[i][j]);

            }
        }
        return array;
    }