LAN-Based Communication System using Java

This is a simple peer-to-peer communication system developed in Java that allows multiple users to chat with each other over a Local Area Network (LAN). It uses sockets for network communication and multithreading to handle multiple clients simultaneously.

🔧 Features

• Client-Server architecture
• Real-time messaging over LAN
• Multithreaded server to handle multiple clients
• User login with username/password
• Message Encryption
• Support Chat history
• Basic GUI using JavaFX
• Message display with sender highlighting

🧠 Technologies Used

• Java (Core)
• Java Sockets
• Multithreading
• JavaFX (for GUI, optional)

🚀 How to Run

Server

1. Compile: javac Server.java
2. Run: java Server

Client

1. 🚀 How to Run

Make sure you have Java (JDK 21 or above) and JavaFX installed and configured in your environment.

Server

1. Compile: javac Server.java
2. Run: java Server

Client (JavaFX GUI)

1. Compile: javac --module-path JarAssets/javafx-sdk-21/lib --add-modules javafx.controls,javafx.fxml src/Client.java
2. Run: java --module-path JarAssets/javafx-sdk-21/lib --add-modules javafx.controls,javafx.fxml -cp src Client
3. Enter the Server IP, Password (if used), and Username

Create Jar for Client (JavaFX GUI)

1. Complie: javac --release 21 --module-path JarAssets\javafx-sdk-21\lib --add-modules javafx.controls,javafx.fxml -d bin src\Client.java
2. Create Jar: jar cfm src/Client.jar src/manifest.txt -C bin .
3. Run Jar File: JarAssets\jre\bin\java --module-path JarAssets\javafx-sdk-21\lib --add-modules javafx.controls,javafx.fxml -jar src\Client.jar
4. Enter the Server IP, Password (if used), and Username

📦 Future Improvements

• File sharing support
• User authentication
• Private messaging
• UI improvements

📄 License

This project is open-source and free to use for educational purposes.