Java-扫描仪和JTextFields的问题

Question

This is my first time using Scanner in a JFrame with 1 JTextFields and 1 JTextArea and I have a problem. When I enter string in the textfield, the scanner is able to pick that up with no problem and I can print it out too.

But when I try to enter a string in the textarea, the scanner doesn't pick it up. I have tried setting focusable to false on the textfield, but still the scanner is not picking up the string entered in the textarea.

Any idea why this is happening?

EDIT My mistake. It is 1 JTextField and 1 JTextArea .

This is my Client class:

public class Client implements Runnable{

    //Globals
    Socket sock;
    Scanner input;
    Scanner send = new Scanner(System.in);
    PrintWriter output;

    public Client (Socket X) {
        this.sock = X;
    }

    //@Override
    public void run() {
        try {
            try {
                input = new Scanner(sock.getInputStream());
                output = new PrintWriter(sock.getOutputStream());
                output.flush();
                CheckStream();
            }
            finally {
                sock.close();
            }
        }
        catch (Exception E) {
            System.out.print(E);
        }
    }

    public void Disconnect() throws IOException{
        output.println(ChatRoom.Username + " has disconnected!");
        output.flush();
        sock.close();
        JOptionPane.showMessageDialog(null, "You disconnected!");
        System.exit(0);
    }

    public void CheckStream() {
        while (true) {
            Receive();
        }
    }

    public void Receive() {
        if (input.hasNext()) {
            String message = input.nextLine();
            //the problem is with "message"
            //it can read the first textfield but not the second
            System.out.println(message);

            if (message.contains("#?!")) {
                String tempCurrUsers = message.substring(3);
                tempCurrUsers = tempCurrUsers.replace("[", "");
                tempCurrUsers = tempCurrUsers.replace("]", "");

                String[] CurrentUsers = tempCurrUsers.split(", ");

                ChatRoom.JL_CurrentUsersDisplay.setListData(CurrentUsers);
            }
            else {
                System.out.println(message);
                ChatRoom.TA_ChatDisplay.append(message + "\n");
            }
        }
    }

    public void Send(String X) {
        output.println(ChatRoom.Username + ": " + X);
        output.flush();
        ChatRoom.TF_MessageBox.setText("");
        //ChatRoom.TA_ChatDisplay.append(ChatRoom.Username+": " + X + "\n");

    }
}

Answer 1

I don't think Scanner is used in Swing (unless you are talking about a barcode scanner). I believe you want use something like

String someText = textField1.getText();

Check out How to Use Text Fields .