💬 Client-Server-Chat-Application-with-GUI-in-Java

Java client-server communication system featuring a GUI for real-time message exchange. Implements socket programming, multithreading, and message handling for efficient, concurrent data transfer between clients and server.

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🧭 Overview

This project implements a multithreaded client-server chat system in Java, allowing multiple clients to communicate simultaneously through a centralized server. The application features a graphical user interface (GUI) built with Swing for real-time messaging and connection management.

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⚙️ Features

• 💻 Client-Server Architecture: Clients connect to a server using TCP sockets.
• 🔁 Multithreading: Each client runs on a dedicated thread to handle concurrent communication.
• 💬 Real-Time Messaging: Clients can send and receive messages instantly.
• 🪟 Graphical Interface: User-friendly GUI built with Java Swing for chat interaction.
• 🧪 Unit Testing: Includes JUnit tests for key components such as client, server, and message handling.

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🧠 Technical Details

• Language: Java
• Core Concepts:
  • Socket Programming
  • Multithreading
  • GUI Design (Swing)
  • Object-Oriented Programming
• Key Classes:
  • Server.java – Handles client connections and message broadcasting
  • Client.java – Connects to the server and exchanges messages
  • ClientHandler.java – Manages communication for each connected client
  • ClientGUI.java – Swing interface for message input/output
  • ServerMain.java / ClientMain.java – Entry points to run server and client

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🚀 How to Run

1. Compile all Java files:

   javac *.java