Append to JTextArea instantly Problem

[jrdncchr]

I got this GUI, and when I click the button, this is its action:

 public void startServer() {
        ServerSocket ss = null;
        
        if(jButton1.getText().equals("Start")){
            try{
                jButton1.setText("Stop");
                taMessages.append("Starting the server..\r\n");
                ss = new ServerSocket(50000);
                taMessages.append("The server started at port: " + ss.getLocalPort() + "\r\n");
                System.out.println("Starting the server..");
                while(true){
                    try{
                        Socket s = ss.accept();
                        taMessages.append("A client has connected!");
                        ClientThread ct = new ClientThread(s);
                        ct.start();
                    }catch(Exception e){
                        System.out.println(e);
                    }
                }
            }catch(Exception e){
                System.out.println(e);
            }
        }else{
            try{
                jButton1.setText("Start");
                taMessages.append("Server Stopped!\r\n");
                ss.close();
            }catch(Exception e){
                System.out.println(e);
            }
        }
    }

The server waits until a client connect, before it prints the texts..

I read about EDT and other issues related to this, but I can't simply understand them.. Can someone help me?

[DarrylBurke]

Have you gone through Lesson: Concurrency in Swing (The Java™ Tutorials > Creating a GUI With JFC/Swing) ? If you have, and still don't understand what you need to do, it's rather doubtful that anybody here would be able to help you either.

db

[zweibieren]

startServer contains an infinite loop: while(true) {}.
If it is called on the EDT, that thread will be blocked, preventing updates.

The ss.accept() needs to be in its own thread.