Get the upload size?

Question

I have just read this topic
http://forum.java.sun.com/thread.jspa?threadID=451245&start=0&tstart=0
how can i get how meny bytes i have already send in the program?
The size() method is just return the size read in to the memory.......
     public void writeFile(String name, String mimeType, String fileName, InputStream is) throws java.io.IOException {
          if(is == null) {
               throw new IllegalArgumentException("Input stream cannot be null.");
          if(fileName == null || fileName.length() == 0) {
               throw new IllegalArgumentException("File name cannot be null or empty.");
          out.writeBytes(PREFIX);
          out.writeBytes(boundary);
          out.writeBytes(NEWLINE);
          out.writeBytes("Content-Disposition: form-data; name=\"" + name + "\"; filename=\"" + fileName + "\"");
          out.writeBytes(NEWLINE);
          if(mimeType != null) {
               out.writeBytes("Content-Type: " + mimeType);
               out.writeBytes(NEWLINE);
          out.writeBytes(NEWLINE);
          byte[] data = new byte[1024];
          int r = 0;
                while((r = is.read(data, 0, data.length)) != -1) {
               out.write(data, 0, r);
                        System.out.println(out.size());//I can't understand why?
          try {
               is.close();
          } catch(Exception e) {System.out.println(e);}
          out.writeBytes(NEWLINE);
                System.out.println(out.size());
          out.flush();
     }

Answer 1

sorry for my poor English >_<"
http://img1.IMGSatellite.com/u/05/142/13/project.rar
You can download the program to try about upload......
I want upload a 700kb file,and my upload speed is 50 kb/s
so....I have to spend 14sec at least.....
but the sum of the 'r' shows
1024
2048
744448
745472
746496
747520
748544
749568
750592
751616
752640
753664
754688
755712
756736
757760
758784
759808
760832
761856
762880
763904
764854
sum of the 'r' jump to 764854 not more then 1sec....
In normal, The bytes I have already send should be about 51200 in first sec
I want to know the bytes I have already send but the sum of the 'r' only shows The bytes of file.