Mastermind Game - Multithreaded Client-Server Application

Overview

This project implements a multithreaded client-server application to play the game Mastermind. The server generates a random 4-color code, and the client attempts to guess the sequence within 20 attempts. The server provides feedback on the correctness of each guess.

Game Description

Mastermind is a code-breaking game where the player tries to guess a secret code consisting of 4 colored pegs. Each peg can be one of six colors: Red (R), Yellow (Y), Green (G), Blue (B), White (W), or Orange (O). The server provides feedback on each guess using:

• P: Correct color and position.
• C: Correct color but wrong position.
• Blanks: Incorrect color and position.

The game continues until the player correctly guesses the code or exhausts 20 attempts.

File Structure

• gameDaemon.java: Main class that sets up the server, listens for connections, and spawns game threads.
• gameThread.java: Handles individual game sessions, generating codes, processing guesses, and providing feedback.
• mastermind.java: Client program that connects to the server, sends guesses, and displays feedback.

How to Run

Server

1. Compile gameDaemon.java and gameThread.java.

   javac gameDaemon.java gameThread.java

2. Run the server.

   java gameDaemon

Client

1. Compile mastermind.java.

   javac mastermind.java

2. Run the client.

   java mastermind

Sample Execution

Sample Execution #1 (Code: RGGB)

Welcome to Mastermind. You will try to guess a 4 color code using
only the letters ( R, Y, G, B, W, O). You will lose the game if you
are unable to guess the code correctly in 20 guesses. Good Luck!

Please enter your guess for the secret code or “QUIT”: BBGG
BBGG CCP
Please enter your guess for the secret code or “QUIT”: GBBY
GBBY CC
Please enter your guess for the secret code or “QUIT”: GRBG
GRBG CCCC
Please enter your guess for the secret code or “QUIT”: BGGR
BGGR CCPP
Please enter your guess for the secret code or “QUIT”: RGGB
RGGB PPPP

Congratulations!!! You guessed the code correctly in 5 moves

Sample Execution #2 (Code: BGWG)

Welcome to Mastermind. You will try to guess a 4 color code using
only the letters ( R, Y, G, B, W, O). You will lose the game if you
are unable to guess the code correctly in 20 guesses. Good Luck!

Please enter your guess for the secret code or “QUIT”: BBGW
BBGG CCP
Please enter your guess for the secret code or “QUIT”: GBBY
GBBY CC
Please enter your guess for the secret code or “QUIT”: QUIT

Goodbye but please play again!