我有以下tcp服务器：

public class Server {

    private Connection db;
    private Statement statement;
    private ServerSocket socket;

    public static void main(String[] args) {
        Server server = new Server();
        server.initializeServer();
        System.out.println("Server initialized");
        server.listenConnections();
    }

    private void initializeServer() {
        try {
            db = DriverManager.getconnection("jdbc:mysql://localhost:3306/courseworkschema" +
                            "?verifyServerCertificate=false" +
                            "&useSSL=false" +
                            "&requireSSL=false" +
                            "&useLegacyDatetimeCode=false" +
                            "&amp" +
                            "&serverTimezone=UTC","Sergei","12345");
            statement = db.createStatement();
            socket = new ServerSocket(1024);
        } catch (SQLException | IOException e) {
            e.printStackTrace();
        }
    }

    private void listenConnections() {
        System.out.println("Listening connections ... ");
        while (true) {
            try {
                Socket client = socket.accept();
                new Thread(() -> {
                    System.out.println("Client accepted");
                    try {
                        OutputStream outputStream = client.getOutputStream();
                        InputStream inputStream = client.getInputStream();

                        String clientaction;
                        String queryContent;

                        boolean flag = true;

                        while (flag) {
                            byte[] msg = new byte[100];
                            int k = inputStream.read(msg);
                            clientaction = new String(msg,k);
                            clientaction = clientaction.trim();
                            msg = new byte[100];
                            k = inputStream.read(msg);
                            queryContent = new String(msg,k);
                            queryContent = queryContent.trim();
                            System.out.println(clientaction);
                            System.out.println(queryContent);

                            if (clientaction.equalsIgnoreCase("END")) {
                                flag = false;
                            }
                            else if (clientaction.equalsIgnoreCase("LOGIN")) {
                                System.out.println("Login action");
                            }
                        }
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                });
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

已创建此服务器以与数据库通信。这是我尝试连接到此服务器的方式L

public class LoginController {
    private LoginWindow window;
    private Socket socket;
    private InputStream is;
    private OutputStream os;

    public LoginController() {
        connectToServer();
    }

    public void logInUser(String login,String password) {
        if (!login.isEmpty() && !password.isEmpty()) {
            sendDataToServer("LOGIN");
            sendDataToServer("");
        } else {
            window.showmessagedialog("Fill the fields!",JOptionPane.ERROR_MESSAGE);
        }
    }

    public void attachView(LoginWindow window) {
        this.window = window;
    }

    private void connectToServer() {
        try {
            socket = new Socket("127.0.0.1",1024);
            System.out.println("Connected");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void sendDataToServer(String res) {
        try {
            os = socket.getOutputStream();
            os.write(res.getBytes());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

运行服务器然后运行客户端时，我在服务器中有这样的日志：

Server initialized
Listening connections ... 

Process finished with exit code -1

所以，我不明白为什么服务器不等待并接受来自客户端的连接，而是在初始化和侦听后关闭。那怎么了我将不胜感激。预先感谢！

UPD

当我运行我的应用程序时，它开始工作，但是我发现 Thread 块中的代码未执行。我什至不明白，为什么会发生