Simple HTTP Server from Scratch

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

public class HttpServer {
    public static void main(String[] args) throws IOException {
        ServerSocket server = new ServerSocket(9000);
        System.out.println("Web server listening on port 9000");
        
        while (true) {
            try (Socket socket = server.accept();
                 BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
                 OutputStream out = socket.getOutputStream()) {
                 
                 String line = in.readLine();
                 if (line != null) {
                     System.out.println("Request: " + line);
                     // Send response headers
                     out.write("HTTP/1.1 200 OK\r\n\r\n".getBytes());
                     out.write("Hello World from Java Server!".getBytes());
                 }
            }
        }
    }
}