🏧 ATM Simulation System

A simple ATM Simulation System developed using Java. This console-based application allows users to perform basic banking operations such as depositing money, withdrawing funds, and checking account balance through a menu-driven interface.

Features

• Deposit Money
• Withdraw Money
• Check Account Balance
• Menu-Driven Interface
• Input Validation for Insufficient Balance
• Exit Option

Technologies Used

• Java
• Object-Oriented Programming (OOP)
• Scanner Class for User Input

Project Structure

ATM-Simulation/
│
├── ATM.class
├── ATM.java
└── README.md

Sample Output

PS C:\ATM-Simulation> javac ATM.java
PS C:\ATM-Simulation> java ATM

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 3
Current Balance: 1000.0

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 1
Enter Amount: 0
Invalid Amount! Please enter a positive value.

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 1
Enter Amount: -200
Invalid Amount! Please enter a positive value.

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 2
Enter Amount: 0
Invalid Amount! Please enter a positive value.

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 200
Invalid Choice

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 1
Enter Amount: 2000
Deposited: 2000.0

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 2
Enter Amount: 1000
Withdrawn: 1000.0

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 3
Current Balance: 2000.0

===== ATM MENU =====
1. Deposit
2. Withdraw
3. Check Balance
4. Exit
Enter Choice: 4
Thank You!

Learning Outcomes

This project demonstrates:

• Java Classes and Objects
• Methods and Method Calls
• Conditional Statements
• Loops (do-while)
• Switch Case
• User Input Handling
• Basic Banking Logic

Future Enhancements

• PIN Authentication
• Multiple User Accounts
• Transaction History
• Fund Transfer Feature
• GUI using Java Swing/JavaFX
• Database Integration using MySQL