Email-System-Console-based

A simple Java console-based Email System where users can compose, send, view, and delete emails. All data is stored in a local text file using File I/O. This project demonstrates OOP concepts, layered architecture, and basic CRUD operations in Java.

📁 Project Structure

EmailSystem/ │ ├── EmailSystem.java # Main class (entry point) ├── Email.java # Model class ├── EmailDAO.java # Data Access Object (File I/O handling) ├── EmailService.java # Business logic ├── emails.txt # Email storage file (auto-created) ├── README.md # Project documentation └── images/ # Screenshots (optional)

HOW TO RUN

🔧 Requirements

Java JDK 8 or later Any Java IDE (VS Code / IntelliJ / Eclipse) or Terminal + Text Editor (Notepad++, Sublime, etc.)

Steps :

1. Open the project folderin VS code.
2. Press F5 or click Run>start Debugging.
3. Select configuration: Main.
4. Use number options in the terminal to interact with the menu.

🧩 Features

Feature Description ✅ Send Email Compose and send email with subject and body 📩 View Emails View all sent and received emails 📥 View Inbox View only received emails (receiver mailbox) 🗑️ Delete Email Delete email using sender, receiver, and subject 💾 File I/O Uses a text file (emails.txt) for persistent storage 🔐 Input Validation Basic validation on inputs like email format and empty fields

🏗️ Project Architecture

+----------------------+ | EmailSystem | <-- Main (UI + Menu) +----------------------+ | ↓ +----------------------+ | EmailService | <-- Logic Layer +----------------------+ | ↓ +----------------------+ | EmailDAO | <-- File I/O +----------------------+ | ↓ +----------------------+ | Email | <-- Model +----------------------+

📚 Concepts Covered

Java Classes & Objects Inheritance & Encapsulation File Handling (BufferedReader/Writer)
Modular Programming CRUD operations Layered Architecture (Model → DAO → Service → UI)

Project Structure