'0', '1', '2', '3', '4', '5',
        '6', '7', '8', '9', 'A', 'B',
        'C', 'D', 'E', 'F'
    };

/** 
 * Generate "hexdump" output of the buffer at src like the following:
 *
 * <p><blockquote><pre>
 * 00000: 04 d2 29 00 00 01 00 00 00 00 00 01 20 45 47 46  |..)......... EGF|
 * 00010: 43 45 46 45 45 43 41 43 41 43 41 43 41 43 41 43  |CEFEECACACACACAC|