📞 Contact Management System - Java Console Application

A simple and interactive Contact Log Manager built using Java!
Manage your contacts, call logs, favorites, and more – all from a console interface.

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🚀 Features

• ➕ Add new contacts with name, number, and optional relation.
• 🔍 Search contacts by name.
• 📝 Edit contact details (name or phone number).
• ❌ Delete existing contacts.
• 📋 Show all saved contacts.
• 📞 Simulate calling a contact.
• 🕓 View call history.
• ❤️ Mark contacts as favourites and view them.
• 🛠 Blocked contacts & viewing feature (under development).
• 🆘 Help menu to list all commands.

📂 Project Structure

│
├── ContactLog/
│ ├── Driver/ # Main application driver
│ │ └── ContactDriver.java
│ ├── Entity/ # Contact entity definition
│ │ └── Contact.java
│ ├── Repository/ # In-memory database (Contact arrays)
│ │ └── Database.java
│ └── Service/ # Core operations like add, search, delete, call
│ └── Operations.java

🧑‍💻 How to Run

1. Clone the repository:

   git clone https://github.com/your-username/contact-log-java.git
   

2. Open the project in your Java IDE (like Eclipse or IntelliJ).

3. Run the ContactDriver.java file to launch the application.

🛠 Technologies Used

Java (JDK 8 or higher)

Console-based interaction (no external libraries)

📸 Sample Output

🔧 To-Do (Future Enhancements)

1. Implement contact blocking and showing blocked contacts
2. Save contacts and call history persistently (e.g., using file or database)
3. Add UI (Swing/JavaFX) for a visual experience
4. Add import/export contact features

📚 What You’ll Learn

This project is a great way to practice and learn core Java concepts. By exploring or contributing to this project, you will:

• ✅ Understand object-oriented programming (OOP) in Java through classes, objects, and encapsulation.
• ✅ Learn to manage data using arrays and collections for contact storage.
• ✅ Explore how to create reusable services like add, delete, and search logic.
• ✅ Practice modular programming by separating logic into packages (Entity, Service, Repository, Driver).
• ✅ Improve your skills in input validation and user interaction via console-based programs.
• ✅ Understand data flow and control structures in real-world applications.
• ✅ Get hands-on with basic CRUD operations and call simulations.

This project is ideal for Java beginners who want to build a complete, functional, and organized application.

📜 License

This project is open-source and free to use for educational purposes.

👨‍🎓 Author

Devansh devanshdmp15@gmail.com