readNBytes
Reads bytes from the BufferedInputStream into the given array
Return
the number of bytes read or -1 if the end of the stream is reached
Since
0.1.1
Parameters
n
the number of bytes to read
Reads up to len bytes of data from the input stream into an array of bytes.
Since
0.1.1
Throws
if an I/O error occurs.
if this method is not supported.