Bank Management System (Java Console App)

A Java console application that simulates a simple banking system using text files for data persistence. This project supports creating accounts, depositing, withdrawing, balance checks, login, and transaction history — all stored and retrieved from .txt files.

It’s a great demonstration of file handling, OOP basics, console UI, and data persistence without a database, making it ideal for a portfolio or resume.

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🧠 Project Overview

This application mimics basic bank operations such as:

• Creating a new bank account
• Logging in using account credentials
• Deposits and withdrawals
• Balance inquiries
• Recording transactions to text files
• Keeping user data and credentials in text files

All data is stored in a local db folder using .txt files (e.g., credentials.txt, balanceDB.txt, userDB.txt) for persistence. ([GitHub][1])

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🛠 Features

✅ Text file based storage — No database required ✅ Account creation & login ✅ Deposit & withdraw functionality ✅ Balance inquiry ✅ Transaction record keeping ✅ Incremental account number generation using last saved entry ✅ Modular design using multiple Java classes

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📌 Why This Project?

This project shows you:

✔️ How to read from and write to text files in Java ✔️ How to model bank operations without a database ✔️ How to design a real‑world console UI logic ✔️ How to use Scanner, File, and FileWriter/Reader classes effectively ✔️ Basic account and transaction management logic

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💻 How It Works (Workflow)

1. Launch the app

2. Choose to either create an account or login

3. Enter details such as name, account information, and initial balance

4. The system will:

   • Write user info into userDB.txt
   • Write credentials into credentials.txt
   • Write starting balance into balanceDB.txt

5. Once logged in, users can:

   • Deposit money
   • Withdraw money
   • Check balance
   • Review transaction history

Data is read and written using Java file I/O operations to persist between executions. ([GitHub][1])

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🗂 Repository Structure

Bank‑Managment‑System/
├── db/
│   ├── credentials.txt
│   ├── balanceDB.txt
│   ├── userDB.txt
│   └── other text files
├── src/
│   ├── Main.java
│   ├── Login.java
│   ├── Creation.java
│   ├── Transaction.java
│   ├── BalanceEnquiry.java
│   ├── AccountDetails.java
│   └── Deletion.java
├── .gitignore
├── README.md
└── .project / .classpath (Eclipse config)

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📁 Example Output

Welcome to Bank Management System!

1. Login
2. Create Account
3. Exit

Enter choice: 2
Enter your name: John Doe
Account created successfully! Your account no is: 1001

Login with your account number and password

Logged in!
1. Deposit
2. Withdraw
3. Balance
4. Transaction History

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🧩 Core Concepts Used

Concept	Demonstrated
File Handling	Reading and writing .txt files
OOP	Classes for different bank tasks
Input Validation	Ensuring correct user input
Incremental Account Numbers	By reading last saved entry
Modular Code	Separate classes for logic

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🚀 How to Run

1. Clone the repository

git clone https://github.com/lijoraj-p-r/Bank-Managment-System

2. Open in Eclipse

   • Import as an existing Eclipse project
   • Ensure the db folder is in project root

3. Run Main.java

   • Follow the console prompts

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🧪 Future Enhancements

Here are some ideas to make it even better:

✔️ Add user authentication with hashed passwords ✔️ Convert to a GUI application using Swing or JavaFX ✔️ Store data in a real database (e.g., MySQL) ✔️ Add exception handling for I/O errors ✔️ Extend transaction history reporting