💻 Computer Application Manager (Java)

A simple Java desktop application that simulates managing computer applications, including games, social apps, and utility apps.

The project demonstrates OOP concepts, inheritance, serialization, and basic data persistence using Java.

---

✨ Features

• User login system
• App installation and uninstallation
• Multiple app types:
  • Game applications
  • Social applications
  • Utility applications
• App information display
• Persistent data storage using serialization (.ser files)

---

🧱 Project Structure

ComputerSim/
├── .idea/
├── out/
├── src/
│ ├── Controller/
│ │ ├── Apps/
│ │ │ ├── AppFactory.java
│ │ │ └── Apps.java
│ │ └── Data/
│ │ └── DataHandler.java
│ │
│ ├── Models/
│ │ ├── ComputerApp.java
│ │ ├── GameApp.java
│ │ ├── SocialApp.java
│ │ ├── UtilityApp.java
│ │ └── UserProfile.java
│ │
│ ├── View/
│ │ ├── Menus/
│ │ │ ├── LoginMenuGUI.java
│ │ │ └── MainMenuGUI.java
│ │ └── SideMenu/
│ │ ├── DisplayInstalledAppsGUI.java
│ │ ├── InstallAppMenuGUI.java
│ │ ├── LoginAndRegister.java
│ │ └── UninstallAppMenuGUI.java
│ │
│ └── Main.java
│
├── apps.ser
└── userdata.ser

---

🧠 Architecture Overview

• Models
  Core data classes representing applications and users.

• Controller

  • Apps → application management logic
  • AppFactory → app object creation
  • DataHandler → serialization & persistence

• View

  • Menus → login & main menu UI
  • SideMenu → install, uninstall, and app display UI

• Persistence

  • apps.ser → stored application data
  • userdata.ser → stored user credentials

Application Model System

• ComputerApp is the base class
• Specialized apps extend it:
  • GameApp
  • SocialApp
  • UtilityApp
• Each app stores:
  • Name
  • Size
  • Installation status
  • Type-specific data

---

2️⃣ User System

• User credentials are stored in UserProfile
• Supports:
  • User registration
  • Login validation
• Credentials are saved locally using serialization

---

3️⃣ Data Persistence

• Uses Java Object Serialization
• Saved files:
  • userdata.ser → user accounts
  • apps.ser → installed applications
• Data is automatically loaded on program startup

---

🚀 How to Run

1. Open the project in an IDE (IntelliJ IDEA recommended)
2. Run Main.java
3. Log in or create a new user
4. Manage applications via the GUI

---

🛠️ Technical Details

• Language: Java
• Paradigm: Object-Oriented Programming
• Data Storage: Serialization (ObjectInputStream / ObjectOutputStream)
• UI: Java GUI (Swing/AWT based)

---

📌 Learning Objectives

This project demonstrates:

• Inheritance and polymorphism
• Encapsulation and abstraction
• Java serialization
• Basic MVC-style separation
• GUI-driven application flow

---

📜 License

This project is intended for educational purposes.
Feel free to modify or extend it for learning and practice.