sockets - Java - Read file by chunks?

Question

I know how to read a file by bytes but cannot find a example how to read it in chunks of bytes. I have a byte array, and i want to read the file by 512bytes and send them over a socket.

I have tried by reading total bytes of file and then subtracting 512 bytes until i got a chunk that was less than 512 bytes and signaled EOF and end of transfer.

I am trying to implement a TFTP, where data is sent in 512 byte chunks.

Anyhow would be thankful for a example.

Answer 1

You ... read 512 bytes at a time.

char[] myBuffer = new char[512];
int bytesRead = 0;
BufferedReader in = new BufferedReader(new FileReader("foo.txt"));
while ((bytesRead = in.read(myBuffer,0,512)) != -1)
{
    ...
}