ATM Simulator 🏧

A full-stack ATM Simulator Web Application built using Java, Servlets, JDBC, MySQL, HTML, CSS, and JavaScript.
This project simulates the real-world working of an ATM system with secure authentication, database-backed transactions, and session management.

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Project Overview

The ATM Simulator allows users to:

• Create a bank account
• Log in securely using account number and PIN
• Perform ATM operations such as deposit, withdrawal, transfer, and PIN change
• View real-time balance and transaction history fetched from the database

All core operations are connected to a MySQL database, making this a real backend-driven application, not a dummy simulation.

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Features

• Account Creation
• Secure Login (Session-based)
• View Balance (Fetched from Database)
• Deposit Money
• Withdraw Money
• Transfer Money Between Accounts
• Change PIN
• Transaction History
• Logout
• Proper Error Handling

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Tech Stack

Backend

• Java
• Servlets
• JDBC

Frontend

• HTML
• CSS
• JavaScript

Database

• MySQL

Server

• Apache Tomcat 9

Version Control

• Git & GitHub

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Database Schema

CREATE TABLE users (
  account_no VARCHAR(6) PRIMARY KEY,
  name VARCHAR(100),
  pin VARCHAR(4),
  balance DOUBLE
);

CREATE TABLE transactions (
  id INT AUTO_INCREMENT PRIMARY KEY,
  account_no VARCHAR(6),
  type VARCHAR(50),
  amount DOUBLE,
  date TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

▶️ How to Run the Project Locally

1️⃣ Clone the Repository

git clone https://github.com/vv-verse/ATM-SIMULATOR.git

2️⃣ Open Project in Eclipse

Open Eclipse IDE

File → Import → Existing Projects into Workspace

Select the cloned project folder

3️⃣ Configure Apache Tomcat

Add Apache Tomcat 9

Right click project → Run on Server

Select Tomcat

4️⃣ Setup MySQL Database

Open MySQL Workbench

Create database:

CREATE DATABASE atm_db;
USE atm_db;

Create tables using schema provided above

5️⃣ Configure Database Connection

Update credentials in:

src/main/java/com/atm/util/DBConnection.java

Example:

String url = "jdbc:mysql://localhost:3306/atm_db";

String user = "root";

String password = "your_password";

6️⃣ Start Server & Access App

Start Tomcat and open browser:

http://localhost:8081/ATM-SIMULATOR/

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⚠️ Important Notes

This application runs locally

Requires MySQL and Tomcat running

Not deployed on cloud yet

Suitable for:

College projects

Backend practice

Resume projects

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👤 Author

Vivek Kumar

B.Tech (CSE)

GitHub: https://github.com/vv-verse

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📄 License

This project is for educational purposes.