Java GUI 冻结

Question

我正在尝试创建一个简单的 TCP 客户端服务器应用程序接口用户可以在按下相应按钮时启动或停止服务器当用户按下它应该连接到服务器的按钮时，我创建了一个 StartServer Button 面临的问题是当用户单击按钮时出现提示并且界面停止

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // TODO add your handling code here:
    DefaultListModel dlm=new DefaultListModel();
    String clientSentence; 
    String capitalizedSentence;
    try {
        welcomeSocket= new ServerSocket(6789);
        dlm.addElement("server started..");            
        dlm.addElement("Server Waiting for Connections on Port 6789");
        jList1.setModel(dlm); 
        displayfull();
         while(true)
        {                
        DataOutputStream outToClient = null;
        try {


            Socket connectionSocket = welcomeSocket.accept();
            //dlm.addElement("Client Connected ");
            BufferedReader inFromClient = new BufferedReader(new InputStreamReader(connectionSocket.getInputStream()));
            //dlm.addElement("Obtained a handle on Client Input Stream");
            outToClient = new DataOutputStream(connectionSocket.getOutputStream());
            //dlm.addElement("Obtained a handle on Client Output Stream");
            clientSentence = inFromClient.readLine();
            //dlm.addElement("Received: " + clientSentence);
            capitalizedSentence = clientSentence.toUpperCase() + '\n';
            outToClient.writeBytes(capitalizedSentence);
            //dlm.addElement("Message Sent");
        } catch (Exception e) {

        } 

    }               

    } catch (Exception e) {
        dlm.addElement(e);
    }
   jList1.setModel(dlm); 
    displayfull();
}

Answer 1

正如其他人所暗示的，您正在 Event Dispatch Thread 上花费宝贵的时间。
如果您通读了有关如何操作的教程 Concurrency in Swing you will discover you are given tools like the Swing worker。

Stack Overflow 上有很多这样的问题，有些比其他的更有帮助。

Java's Swing Threading
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