Bank Management Application

A Java Swing–based desktop application for managing bank accounts with a sleek dark-themed interface. This project demonstrates fundamental object-oriented programming (OOP), file-based data persistence, and a modular GUI architecture using multiple frames.

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👨‍💻 Contributors

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🎯 Objective

To build a fully functional desktop banking simulator that allows users to:

• Create, view, update, and delete bank accounts
• Perform deposits and withdrawals with account-type-specific rules
• Store all data in a plain-text file for simplicity and portability

The application emphasizes clean code structure, consistent UI/UX, and core Java programming best practices.

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✨ Key Features

• ✅ Create Savings or Checking accounts
• 🔐 Secure login using account number + password
• 💰 Deposit funds with real-time balance update
• 🏧 Withdraw with validation:
  • Savings: Minimum balance enforced at 500
  • Checking: Overdraft allowed up to –1000
• 🔍 Search any account by account number
• 👁️ View detailed account information
• 📋 Display all accounts in a styled scrollable table
• 🗑️ Delete accounts (requires valid credentials)
• 💾 Persistent storage in ./data/accounts.txt (CSV format)

⚠️ Note: Passwords are stored in plain text—acceptable for learning, not for production.

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🧠 OOP Principles Used

Concept	Implementation
Encapsulation	All Account fields are protected; accessed via public methods
Inheritance	SavingsAccount and CheckingAccount inherit from abstract Account
Abstraction	Abstract Account defines required behavior (getType, canWithdraw)
Polymorphism	Withdraw logic adapts based on runtime account type

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🛠️ Technologies

• Language: Java (JDK 8+)
• GUI: Swing + AWT
• Architecture: Multiple JFrame windows (one per screen)
• Persistence: File I/O with BufferedReader/BufferedWriter
• Styling: Consistent dark theme with custom colors and hover effects
• Build: Pure Java—no external dependencies

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🗂 Project Structure

Bank-Account-Management-System-Single-Page/
│
├── assets/
| ├── screenshots/
│ ├── logo.png
│ ├── logo(50x50).png
│ └── logo(60x60).png
│
├── data/
│ └── AccountFileHandler.java
│
├── model/
│ ├── Account.java
│ ├── SavingsAccount.java
│ └── CheckingAccount.java
│
├── ui/
│ ├── MainFrame.java
│ ├── MenuPanel.java
│ ├── CreateAccountPanel.java
│ ├── LoginPanel.java
│ ├── TransactionPanel.java
│ ├── DepositPanel.java
│ ├── WithdrawPanel.java
│ ├── SearchPanel.java
│ ├── ShowAccountPanel.java
│ ├── ShowAllPanel.java
│ └── DeletePanel.java
│
├── utils/
│ └── Utils.java
│
├── Main.java
├── .gitignore
└── README.md

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💾 Data Format

Accounts are stored in ./data/accounts.txt as comma-separated values:

accountNumber,name,password,accountType,email,phone,balance

Example:

SA-1001,John Doe,SecurePass123,Savings,john@email.com,017********,5000

CA-1001,Alice Smith,SecurePass456,Checking,alice@email.com,018********,10000

⚠️ Note: Passwords are stored in plain text for academic simplicity (not suitable for production).

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▶️ How to Run

1. Clone or download this repository
2. Open terminal in the project root directory
3. Compile all Java files:

   javac ui/*.java model/*.java data/*.java utils/*.java Main.java

4. Run the program:

   java Main

💡 Ensure the ./data/ folder exists (the program will create accounts.txt automatically on first save).

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📸 Screenshots

Menu	Create Account	Login

Transaction	Deposit	Withdraw

Search	Account Details	Delete Account

All Accounts (Table View)

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🔚 Summary

This Bank Management Application is a desktop banking simulator built with pure Java using Swing for the GUI. It demonstrates core object-oriented programming principles, including encapsulation, inheritance, abstraction, and polymorphism, alongside file-based data persistence and a clean, dark-themed user interface. Designed with modularity in mind, each screen is implemented as a separate JFrame, making the code easy to read, maintain, and extend. Ideal for learning Java OOP, file I/O, and desktop UI development.

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