FileChannel

I am learning about the FileChannel class.
My code using the FileChannel is:

Code:

---

String data = "friends.txt";
                        FileInputStream inData = new FileInputStream(data);
                        FileChannel inChannel = inData.getChannel();
                        long inSize = inChannel.size();
                        ByteBuffer source = ByteBuffer.allocate((int) inSize);
                        inChannel.read(source, 0);
                        source.position(0);
                        System.out.println("Original byte data: ");
                        for (int i = 0; source.remaining() > 0; i++) {
                                System.out.print(source.get());
                        }

---

I am really confused as to what the benefits are of using the FileChannel class as opposed to using:
FileInputStream and BufferedInputStream classes ?
I might be missing something really obvious.
Thank you

anyone?.........

It's faster.

cool thanks!