ChatSphere

A real-time desktop messaging application built using Java, Swing, Socket Programming, Multithreading, JDBC, and MySQL.

ChatSphere enables multiple users to communicate instantly through a client-server architecture while maintaining persistent chat history in a MySQL database.

---

Features

• Secure user authentication using MySQL
• Real-time one-to-one messaging
• Multi-client support using multithreading
• Persistent chat history storage
• Automatic chat history retrieval
• Dynamic user list loaded from database
• Client-server architecture using Java Sockets
• Modern Swing-based desktop interface
• Reconnect and refresh support

---

Tech Stack

Frontend

• Java Swing

Backend

• Java
• Socket Programming
• Multithreading

Database

• MySQL
• JDBC

---

Project Architecture

Client (Swing GUI)
        |
        | Socket Connection
        |
Chat Server (Multithreaded)
        |
        | JDBC
        |
      MySQL

---

How It Works

1. User logs in using valid credentials.
2. Client connects to the Chat Server.
3. Server creates a dedicated thread for the client.
4. Messages are exchanged in real time.
5. Messages are stored in MySQL.
6. Previous conversations are loaded automatically when a chat is opened.

---

Screenshots

Login Screen

The login interface allows users to authenticate using credentials stored in the MySQL database.

---

Chat Window

Real-time private messaging between connected users through a multithreaded socket server.

---

Chat History

Previously exchanged messages are automatically loaded from the database when a conversation is opened.

---

Installation

Clone Repository

git clone https://github.com/azhann-01/ChatSphere.git
cd ChatSphere

Configure Database

Create a MySQL database:

CREATE DATABASE ChatSphere;

Update database credentials inside:

src/database/DBConnection.java

Compile

javac -cp "lib/*" -d . src/**/*.java

Start Server

java -cp ".;lib/*" server.ChatServer

Start Client

java -cp ".;lib/*" gui.LoginFrame

---

Demo Credentials

After importing the database, you can log in using:

Username	Password
admin	admin123
alice	alice123
bob	bob123
charlie	charlie123

---

Concepts Demonstrated

• Object-Oriented Programming
• Socket Programming
• Client-Server Architecture
• Multithreading
• Database Connectivity
• GUI Development
• Concurrent User Handling

---

Future Enhancements

• User Registration
• Password Hashing
• Online/Offline Status
• Message Timestamps
• File Sharing
• Group Chats
• Dark Mode
• End-to-End Encryption

---

Author

Md Azhan

Computer Science Engineering Student

GitHub: https://github.com/azhann-01