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what?? I figured the problem out by myself, so I thought I'd post the corrected classes, should anyone need them :)

I finally figured it out!
I managed to make it work by deleting the Upload Button and actionPerformed() and moved the code in it into run()....
Then I replaced ObjectInputStream and...

These two classes are part of a much larger project for my dissertation (for my bachelor's)..... Once the client's logged in, they can choose what to do amongst four possible choices: Remotely...

it's oos; I added the following lines of code before oos.writeInt(selectedFiles.length);
if(oos==null) System.out.println("oos is null");
else System.out.println("oos is not null");

and it...

the server side just hangs (well that's normal, since it's waiting for the the number of files to be transferred)
here's the the exception stack trace:
Exception in thread "AWT-EventQueue-0"...

Hi there I have been having some thread synchronization issues lately, I am trying to write a client/server application which is supposed to transfer files from one computer to another using a given...