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()