ATM SIMULATION

Overview BRIEF

A console-based automated teller machine simulation enabling user card authentication, PIN security checks, real-time balance inquiries, validated cash deposits, and withdrawals using core Java fundamentals.

Tools & Skills Required CONCEPTS APPLIED

Java Syntax & Data Types (int, double, boolean) Scanner Class (java.util.Scanner) Conditional Logic (if - else, switch - case) Iteration Control (while, do-while loops) Static & Instance Methods (public static void) Input Validation & Sentinel Values

Target & Key Features SPECIFICATION

• 4-digit PIN authentication: with a maximum of 3 failed attempt lockout safeguard;
• Interactive terminal menu: Balance Inquiry, Cash Deposit, Cash Withdrawal, and Exit;
• Transaction validation guards: preventing negative deposits and overdraft withdrawals;
• Formatted receipt summary: displaying updated balance and transaction status.

ATM SIMULATION • ILLUSTRATIVE INTERFACE

Card No: [•••• 5821]

Status: [AUTHENTICATED]

Balance: [$1,240.50]

Action: [02 - Withdrawal]

Amount: [$200.00]

Remaining: [$1,040.50]

PRACTICAL JAVA PROJECTS

2 BEGINNER

BANK ACCOUNT APPLICATION

Overview BRIEF

An object-oriented banking application modeling customer accounts, interest accruals, multiple account categories, and secure data encapsulation.

Tools & Skills Required CONCEPTS APPLIED

OOP (Classes, Objects, Constructors) Encapsulation (private fields, Getters & Setters) Method Overloading & Parameters Java Collections (ArrayList for transaction ledger) String Formatting (System.out.printf) Exception Handling (try-catch, IllegalArgumentException)

Target & Key Features SPECIFICATION

• Automated account generation: unique account numbers linked with customer profiles;
• Multiple account tiers: Savings Account (interest calculation) and Checking Account (overdraft fees);
• Deposit & withdrawal method guards: strict balance checking and zero/negative value prevention;
• Chronological transaction log: recording timestamps, action type, and running balance.

BANK ACCOUNT • ILLUSTRATIVE SUMMARY

Account No: [BA-9024-X]

Account Type: [Savings Account]

Account Holder: [customer name]

Interest Rate: [3.25% p.a.]

Active Balance: [$4,850.00]

PRACTICAL JAVA PROJECTS

3 INTERMEDIATE

STUDENT MANAGEMENT SYSTEM

Overview BRIEF

A structured terminal-based academic management system facilitating student registration, course enrollments, grade calculations, and persistent record storage.

Tools & Skills Required CONCEPTS APPLIED

Java Collections Framework (ArrayList, HashMap) Advanced OOP (Inheritance, Interfaces, Polymorphism) File I/O & Persistence (BufferedReader, BufferedWriter) Custom Exception Handling (StudentNotFoundException) Stream API & Lambdas (Sorting, Filtering) Modular Architecture & Data Validation

Target & Key Features SPECIFICATION

• Full CRUD operations: add new student, update contact details, delete record, view all records;
• Automated GPA & academic standing evaluation: based on credit hours and letter grades;
• Query and search engine: lookup by Student ID, Major, or academic year;
• File storage persistence: read and write student state to text or CSV data files on disk.

STUDENT MANAGEMENT • SYSTEM INTERFACE

Student ID: [STU-2026-441]

Name: [student name]

Major: [Computer Science]

Courses: [05 Enrolled]

GPA: [3.82 / 4.00]

Status: [Dean's Honors List]