public static int charToInt(char c) {
        int data = 0;

        switch (c) {
            case 'I':
                data = 1;
                break;
            case 'V':
                data = 5;
                break;
            case 'X':
                data = 10;
                break;
            case 'L':
                data = 50;
                break;
            case 'C':
                data = 100;
                break;
            case 'D':
                data = 500;
                break;
            case 'M':
                data = 1000;
                break;
        }

        return data;
    }