StreamReader from TCP Socket Hanging...I think

Question

Hello all, and thank you in advance for any and all help. Allow me to start out by apologizing as I have only been programming Java for about 3 days now, however I am a bit stuck and have spent about 5 hours trying to figure out what could be my problem here.
I have written an app that connects to a usenet server and pulls that list of groups from the server, however it seems as if the BufferedReader doesn't have a large enough buffer to hold the response from ther server. I can save the output of the log from putty during the LIST command and I recieve 108897 lines of text (about 5 mb in total) however in my Java app it gets to line #108598 and hangs. I have tried messing with the buffer sizes of the StreamReader as well as the Socket, and if I try to set the buffer size of the BufferedReader {+bufferedreader(stream,int)}+ It won't compile.
Well here is the code, and again, i apologize if this is sloppy/not correct coding practices. I am new at Java.
    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                     
    try {
        String data = "";
        Socket skt = new Socket("127.0.0.1", 119);
        BufferedReader in = new BufferedReader(new InputStreamReader(skt.getInputStream()));
        while (!in.ready()){}
        data = in.readLine();
        //log.append(data.toString() + "\n");
        Scanner sc = new Scanner(data);
        int command = sc.nextInt();
        if (command == 200) {
            log.append("Connection established to" + sc.nextLine() + "\n");
            log.append("Sending Log-in Credentials \n");
            PrintWriter out = new PrintWriter(skt.getOutputStream(), true);
            out.println("AUTHINFO USER " + txtUser.getText());
            while (!in.ready()){}
            data = in.readLine();
            sc = new Scanner(data);
            command = sc.nextInt();
            if (command == 381) {
                out.println("AUTHINFO PASS " + txtPass.getText());
            while (!in.ready()){}
            data = in.readLine();
            sc = new Scanner(data);
            command = sc.nextInt();
            if (command == 281) {
                log.append("Successfully logged in \n");
                log.append("Getting list of active groups \n");
                out.println("list");
                while (!in.ready()){}
                data=in.readLine();
                Writer output = null;
                File outfile = new File("c:/data/groups.txt");
                output = new BufferedWriter(new FileWriter(outfile));
                output.write(data + "\n");
                out.println("Date");
                int i = 0;
                while ( i != 108897) {
                    data = in.readLine();
                    output.write(data + "\n");
                    i += 1;
    catch (Exception ex) {
        System.out.print(ex.getMessage());

Answer 1

while (!in.ready()){}Remove that. It's just burning CPU. The following readLine() will block until the line arrives.
while (!in.ready()){}Ditto.
while (!in.ready()){}Ditto.
while (!in.ready()){}Ditto.
while ( i != 108897) {
data = in.readLine();At this point (and every other readLine()) you must check for data == null, which is EOS, and break, and close the stream, if you get it.