Social Network Java Application

Overview

This Java application provides a basic implementation of a social network. Users can create accounts, connect with friends, and view their friends list. The application uses an adjacency matrix to track connections between users.

Features

• Create Account: Users can create a new account with a unique ID, name, and a password. The password must meet specific complexity requirements.
• Connect with a Friend: Users can establish a connection with another user by their unique IDs.
• Show Friends List: Users can view a list of their friends, including their names and IDs.

Requirements

• Java 8 or higher

How to Run

1. Clone the Repository: If you're using Git, you can clone the repository to your local machine.

   git clone <repository-url>
   

2. Compile the Code: Navigate to the directory containing the code.java file and compile it using javac.

   javac code.java
   

3. Run the Application: Execute the compiled code class using java.

   java code
   

Code Overview

Classes

Person

Represents a user with a name, unique ID, password, and a list of friends.

• String name: The name of the person.
• String id: The unique ID of the person.
• String password: The password of the person.
• List friends: A list of IDs representing the person's friends.

SocialNetwork

Manages the users and their connections.

• List users: List of all users in the network.
• Map<String, Person> idToPersonMap: Maps user IDs to Person objects.
• boolean[][] adjacencyMatrix: Adjacency matrix representing connections between users.

Methods

• createAccount(String name, String password): Creates a new account if the password is valid.
• connectWithFriend(String userId, String friendId): Connects two users if both IDs are valid.
• showFriendsList(String userId): Displays the list of friends for a given user ID.
• generateUniqueId(): Generates a unique ID for new users.
• isValidPassword(String password): Checks if the password meets complexity requirements.

Main Method

The main method provides a text-based interface allowing users to create accounts, connect with friends, and view their friends list.

Usage

After starting the application, you'll be presented with a menu to:

• Create an account
• Connect with a friend
• Show your friends list
• Exit the application

Follow the prompts to interact with the application.

Notes

Ensure that your password meets the following criteria:

• Contains at least one uppercase letter
• Contains at least one lowercase letter
• Contains at least one digit
• Contains at least one special character

The adjacency matrix is updated dynamically as users are added and connections are made.