Bank Management System by Java

A console-based Bank Management System developed using Java and Object-Oriented Programming (OOP) concepts. The application provides core banking operations such as account creation, login, balance inquiry, account details, fund transfer, bank statements, and account closure.

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1. Project Overview

The Bank Management System is a Java-based console application created to demonstrate the practical use of Object-Oriented Programming concepts through a banking use case.

The system provides a terminal-based interface through which users can create and manage bank accounts and perform common banking operations.

Main Functions

• Create a new bank account
• Generate an account number
• Login using account number and password
• View account details
• Check account balance
• Transfer funds
• View bank statement / transaction history
• Close an account
• Log out from the system
• Exit the application

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2. Technologies Used

• Programming Language: Java
• Programming Paradigm: Object-Oriented Programming (OOP)
• Input Handling: Java Scanner
• File Handling: Java I/O
• Data Handling: Local text files
• Version Control: Git and GitHub

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3. Project Structure

Bank-Management-System-by-Java/
│
├── SRC/
│   ├── Main.java
│   ├── Login.java
│   ├── Creation.java
│   ├── Deletion.java
│   ├── AccountDetails.java
│   ├── BalanceInquiry.java
│   ├── Transaction.java
│   └── BankStatement.java
│
├── db/
│   ├── credentials.txt
│   ├── userDB.txt
│   └── balanceDB.txt
│
├── Docs/
│   ├── ProjectReport.pdf
│   └── screenshot.pdf
│
└── README.md

Folder and File Description

File / Folder	Purpose
SRC/	Contains all Java source-code files
db/	Contains the local text files required by the application
credentials.txt	Stores account authentication information
userDB.txt	Stores customer account information
balanceDB.txt	Stores account balance information
Docs/	Contains project documentation and supporting files
ProjectReport.pdf	Detailed project report
screenshot.pdf	Project screenshots / supporting visuals
README.md	Project setup and execution instructions

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4. Environment Requirements

Before running the project, make sure the following software is installed on the system.

Java Development Kit (JDK)

The project requires a Java Development Kit because both the Java runtime and Java compiler are needed.

Verify the Java runtime:

java -version

Verify the Java compiler:

javac -version

Both commands should display an installed Java version.

A current LTS JDK or another compatible modern JDK is recommended.

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5. Clone the Repository

Open Terminal and navigate to the directory where you want to store the project.

Clone the repository:

git clone https://github.com/[YOUR USER_NAME]/Bank-Management-System-by-Java.git

Enter the project directory:

cd Bank-Management-System-by-Java

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6. Verify the Project

After entering the project directory, verify the required folders are present:

ls

The project should contain:

SRC/
db/
Docs/
README.md

You can also verify the Java source files:

ls SRC

And verify the required database files:

ls db

The db directory should contain:

credentials.txt
userDB.txt
balanceDB.txt

The project should be run from the repository root so that the application's relative file paths resolve correctly.

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7. Compile the Project

From the project root directory, compile all Java source files using:

javac -d out SRC/*.java

Explanation

• javac — invokes the Java compiler.
• -d out — places compiled .class files inside the out directory.
• SRC/*.java — compiles all Java source files stored in SRC.

If compilation is successful, the command completes without errors and creates the out directory.

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8. Run the Project

After successful compilation, run the application using:

java -cp out Main

The application will launch in the terminal and display the main banking interface.

The starting menu provides options for:

Type 1: Login
Type 2: Create Account

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9. Expected Execution Flow

The basic execution flow of the application is:

Start Application
       │
       ▼
Main Menu
       │
   ┌───┴───────────┐
   │               │
   ▼               ▼
 Login        Create Account
   │               │
   └───────┬───────┘
           ▼
      Banking Menu
           │
   ┌───────┼────────┬──────────┬──────────┐
   ▼       ▼        ▼          ▼          ▼
 Balance  Details  Transfer  Statement  Closure

After authentication or successful account creation, the user is taken to the banking menu where the available banking operations can be selected.

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10. Complete Setup and Execution

For an evaluator who already has Java installed, the complete process is:

Step 1 — Clone

git clone https://github.com/[YOUR USER_NAME]/Bank-Management-System-by-Java.git

Step 2 — Enter the project

cd Bank-Management-System-by-Java

Step 3 — Compile

javac -d out SRC/*.java

Step 4 — Run

java -cp out Main

The application will then start in the terminal.

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11. Project Documentation

Additional project documentation is available in the Docs/ directory.

Project Report

Docs/ProjectReport.pdf

The project report provides detailed documentation related to the project.

Screenshots

Docs/screenshot.pdf

This file contains supporting screenshots of the project and its execution.

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12. OOP Concepts Demonstrated

The project demonstrates the practical use of important Object-Oriented Programming concepts, including:

Classes and Objects

Separate Java classes are used to represent different banking operations and system responsibilities.

Interfaces

Interfaces are used to define method contracts for specific functionality such as account creation and authentication.

Encapsulation

Related data and behavior are organized within appropriate classes.

Abstraction

Interfaces are used to define required behavior while implementation details remain within their respective classes.

Modular Design

Different banking operations are separated into dedicated classes, making the source code easier to understand and maintain.

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13. Author

Debasish6569