ProgressMonitorInputStream无法正常工作？

Question

I am trying a simple socket based file transfer program to include a ProgressMonitorInputStream, my file transfer is working fine. But the progressMonitor never shows up.
I am sending a file from server to client, when it connects, my file is getting transfered perfectly, but just don't understand why the ProgressMonitor doesn't come up.

I searched some examples, they used 'this' instead of 'new Jframe()' in PMIS, but since I was inside main(), it didn't allow me to do that.

//client
InputStream is = sock.getInputStream();
BufferedInputStream bis = new BufferedInputStream(
new ProgressMonitorInputStream(new JFrame(),"reading",is));
while ((read = bis.read(buffer,0,buffer.length)) != -1) {
//read from socket...now write to file 
}    

Answer 1

I searched some examples, they used 'this' instead of 'new Jframe()' in PMIS

You have re_read tutorial about How to Use Progress Bars , there is basic description for ProgressMonitorInputStream

Swing is single threaded and if you want to move with progress , then you have to redirect this Stream to the BackroundTask , tutorial about JProgressBar implelemnts SwingWorker , another options is wrap that to the Runnable#Thread , but in this case output to the GUI must be wrapped into invokeLater()