HelloWorldWeb

HelloWorldWeb.java

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;

public class HelloWorldWeb {

    public static final int PORT = 80;

    public static void main(String [] args) throws IOException {

        ServerSocket socket = new ServerSocket(HelloWorldWeb.PORT);

        try {
            while(true) {
                Socket client = socket.accept();
                OutputStream out = client.getOutputStream();

                InputStreamReader in = new InputStreamReader(client.getInputStream());
                BufferedReader reader = new BufferedReader(in);

                String line = reader.readLine();
                while (line != null && !line.isEmpty()) {
                    System.out.println(line);
                    line = reader.readLine();
                }

                String hello = "HTTP/1.1 200 OK \n\n Hello World";
                out.write(hello.getBytes(StandardCharsets.UTF_8));

                out.flush();
                out.close();
            }
        }
        catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
}