Java Console Simple Chat Application

Overview

The Java Chat Client is a simple console-based client application that connects to a Java Chat Server. It allows users to send messages to the chat, change nicknames, and gracefully exit the chat. The client establishes a socket connection to the server and communicates through input and output streams.

The Java Chat Server is a multithreaded server application that facilitates communication between multiple clients in a chat room. Clients can connect to the server, choose nicknames, send messages, change nicknames, and gracefully exit the chat. The server uses Java's ServerSocket for handling incoming connections and ExecutorService for managing multiple threads to handle client connections concurrently.

Features

• Connect to a Java Chat Server running on 127.0.0.1 and port 9999.
• Send messages to the chat.
• Change nickname using the /nick command.
• Gracefully exit the chat using the /quit command.
• Multithreaded server architecture.
• Clients can join the chat, choose nicknames, and send messages.
• Nickname changing functionality using the /nick command.
• Graceful exit with the /quit command.
• Dynamic broadcast of messages to all connected clients.
• Robust error handling for client disconnections.

Preview

How to Use

1. Connect to Server: The client connects to the server running on 127.0.0.1 and port 9999.
2. Set Nickname: Upon connection, clients are prompted to enter a nickname.
3. Send Messages: Enter messages in the console to send them to the chat.
4. Change Nickname: Use the /nick command followed by the desired nickname to change it.
5. Exit Chat: Type /quit to gracefully exit the chat.

Implementation Details

• The server runs on port 9999 by default.
• The client establishes a socket connection to the server.
• Communication with the server is done using BufferedReader and PrintWriter streams.
• Input and output are handled in separate threads for asynchronous communication.
• Each client connection is handled by a separate thread using ExecutorService.
• Communication between clients and the server is achieved through BufferedReader and PrintWriter streams.
• The server broadcasts messages to all connected clients.

How to Run

1. Compile the App.java file:

   javac App.java
   java App

Contributions

Contributions are welcome! Feel free to submit issues or pull requests.

License

This project is licensed under the MIT License - see the LICENSE file for details.