When reading the InputStream of an HttpURLConnection, is there any reason to use one of the following over the other? I've seen both used in examples.

Manual Buffer:

while ((length = inputStream.read(buffer)) > 0) {
    os.write(buf, 0, ret);
}

BufferedInputStream

is = http.getInputStream();
bis = new BufferedInputStream(is);
ByteArrayBuffer baf = new ByteArrayBuffer(50);

int current = 0;
while ((current = bis.read()) != -1) {
     baf.append(current);
}

EDIT I'm still new to HTTP in general but one consideration that comes to mind is that if I am using a persistent HTTP connection, I can't just read until the input stream is empty right? In that case, wouldn't I need to read the message length and just read the input stream for that length?

And similarly, if NOT using a persistent connection, is the code I included 100% good to go in terms of reading the stream properly?