I am trying to read value received from JavaScript WebSocket using Java I have this JavaScript code:

const socket = new WebSocket("wss://localhost:7999"); // start

socket.addEventListener("open", (event) => {
    socket.send("Hello!");
});

socket.addEventListener("message", (event) => {
    console.log("Received message.");
});

And this Java code:

import java.io.*;
import java.net.*;

class Server {
    public static void main(String[] args) throws Exception {
        ServerSocket s = new ServerSocket(7999);
        Socket client = s.accept();

        System.out.println("I am in!");
        InputStream inputStream = client.getInputStream();

        InputStreamReader reader = new InputStreamReader(inputStream, "UTF-8");
        BufferedReader in = new BufferedReader(reader);
        String readLine;

        while ((readLine = in.readLine()) != null) {
            System.out.println(readLine);
        }
    }
}

However, upon launching the server and client code, I am receiving this value:

I am in!
���
�.isֿ���pO?��-4/P�P����- ���Q�`�:���x���wG�Z��x��v�##�6���,�+̩�0�/̨�$�#�
�   �(�'����=<5/�
}�� localhost�

��http/1.1
3+)�� �-l-h������ۥ n�}�>�zUZ�Ğ�-+

My goal is to read the value Hello, that I have sent using socket.send. Does anyone know how to fix this problem? Thanks.