How do I measure transfer speed on an IO Connection?

Question

I bet there are hundreds of ways :)
But I was looking for something that is like built into Java.
Lets say you got a "normal" socket read like this:
            BufferedInputStream buffIn = new BufferedInputStream(sock.getInputStream());
            DataInputStream dataIn = new DataInputStream(buffIn);
            while(running) {
                int c;
                while( (c=dataIn.read()) != 0xff) {
               // Do what ever.
             }How would U meansure speed?

Answer 1

BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
int r;
while( (r=in.read()) != -1) {
    speed();
private void speed() {
    if(System.currentTimeMillis()-time > 1000) {
     String rate = "Transfer rate " + printTime(bytes) + " /sek";
     System.out.println(rate);
     bytes=0;
     time = System.currentTimeMillis();
    } else bytes++;
public String printTime(float time) {
    String toReturn = "" + time;
    if(((int)time)/((int)1024)>((int)0)) {
     time = time/1024;
    } else return "" + time + " byte";
    if(((int)time)/((int)1024)>((int)0)) {
     time = time/1024;
    } else return "" + time + " kilobyte";
    if(((int)time)/((int)1024)>((int)0)) {
     time = time/1024;
    } else return "" + time + " megabyte";
    if(((int)time)/((int)1024)>((int)0)) {
     time = time/1024;
    } else return "" + time + " gigabyte";
    return toReturn;
}