Lab Based Practical Mock

Java implementations for client-server practical work using both socket programming and the built-in HTTP server API.

Overview

This project contains two independent lab exercises:

• SocketServerExam implements a multi-threaded echo server using ServerSocket and Socket.
• HttpServerExam implements a simple HTTP server using com.sun.net.httpserver.HttpServer.

Each class can be run separately.

Project Structure

• src/main/java/com/mycompany/lab_based_practical_mock_socket/SocketServerExam.java
• src/main/java/com/mycompany/lab_based_practical_mock_httpserver/HttpServerExam.java
• pom.xml

Requirements

• Java 17
• Maven 3.8+ or later

Build

From the project root:

mvn clean package

This compiles the sources into target/classes.

Run the Socket Server

The socket server listens on port 7000 and echoes each line sent by a client.

java -cp target/classes com.mycompany.lab_based_practical_mock_socket.SocketServerExam

Example client test:

nc localhost 7000

Type a message and press Enter. The server responds with Echo: <message>.

Run the HTTP Server

The HTTP server listens on port 8000.

java -cp target/classes com.mycompany.lab_based_practical_mock_httpserver.HttpServerExam

Available endpoints:

• GET / returns a simple HTML welcome page.
• POST /data returns a mock JSON response with Content-Type: application/json.

Example requests:

curl http://localhost:8000/
curl -X POST http://localhost:8000/data -H "Content-Type: application/json" -d '{"name":"test"}'

Notes

• The socket server handles each client connection on a separate thread.
• Both servers are intentionally simple and match the lab-style TODO structure in the source code.
• If you use Windows PowerShell, you can run the same java -cp ... commands from the project root.