https://github.com/tejmagar/java-web-server

Example code to make your own Java Web Server which prints Hello World
https://github.com/tejmagar/java-web-server

http java webserver

Last synced: 7 months ago
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Example code to make your own Java Web Server which prints Hello World

• Host: GitHub
• URL: https://github.com/tejmagar/java-web-server
• Owner: tejmagar
• Created: 2024-02-21T02:57:14.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2024-02-21T02:59:23.000Z (almost 2 years ago)
• Last Synced: 2025-01-30T08:43:04.643Z (about 1 year ago)
• Topics: http, java, webserver
• Language: Java
• Homepage:
• Size: 2.93 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Java web server example

Example code to make your own Java Web Server which prints Hello World

```java

import java.io.IOException;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

public class Main {

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

        System.out.println("Server is running at http://127.0.0.1:3000");

        ServerSocket serverSocket = new ServerSocket(3000);

        while (true) {

            // Wait for the new connection and block the further execution.

            Socket socket = serverSocket.accept();

            // Great, browser is connected to our web server

            // Print writer is used to write buffered string text. It will not write to the socket until it's buffer is filled.

            // Writing to socket at once is faster than writing in very small chunks.

            PrintWriter printWriter = new PrintWriter(socket.getOutputStream());

            // Http Header starts

            // Http version and status code for the browser to handle response

            printWriter.write("HTTP/1.1 200 OK\r\n");

            // We are saying browser, this is a html file

            printWriter.write("Content-Type: text/html\r\n");

            // Http header ends with \r\n

            printWriter.write("\r\n");

            // We now write actual response

            printWriter.write("
Hello World
");

            // If buffered is filled, probably response is already sent. If it's waiting for the buffer to filled,

            // we need to flush it to make sure all the data is sent to the browser.

            printWriter.flush();


            // Closing socket is the simplest way to say to the browser that all data has been sent.

            socket.close();

        }

    }

}

```