Muhammad Ammar Saleem — Java Portfolio

Java projects built from scratch covering OOP, MVC architecture, JavaFX GUI, and console-based applications.

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🖥️ GUI Projects

1. Payroll Management System

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A desktop payroll application simulating a real-world HR workflow with role-based access control, polymorphic salary calculation, and CSV-based data persistence.

Detail	Info
Stack	Java 17 · JavaFX · FXML · MVC · Maven
Architecture	MVC (Model-View-Controller)
Persistence	CSV (no database required)
Viva Score	10 / 10
Contributors	Muhammad Ammar Saleem · Fatima Naeem · Abdul Hadi

Features

• Three roles — SuperAdmin, SubAdmin, Employee — each with separate dashboards and permissions
• Polymorphic salary calculation — Full-Time, Part-Time, and Contract employee types via a unified PayrollManager
• Leave request workflow — submit → approve/reject → status update
• Allowances & deductions factored into net salary
• Payslip generation per employee per month
• 28 seeded employees across IT, HR, and Finance

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2. Vehicle Rental System

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A JavaFX-based vehicle rental application handling booking, rental duration, and cost calculation.

Detail	Info
Stack	Java · JavaFX

Features

• Interactive GUI for vehicle booking
• Automatic rental cost calculation based on days
• Input validation and error handling
• Separation of UI and backend logic

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3. Calculator (JavaFX)

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A fully functional GUI calculator built using JavaFX as a class assignment, supporting basic arithmetic operations with a clean, intuitive interface. The repo also contains additional JavaFX practice exercises and mini experiments built while learning the framework.

Detail	Info
Stack	Java 17+ · JavaFX 20+
Type	Class assignment

Features

• Addition, subtraction, multiplication, division
• Clean, intuitive UI
• Additional practice programs — loops, conditions, basic logic, file handling, and JavaFX GUI experiments

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🖥️ Console Projects

4. Mini Apps Collection

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Console-based Java applications covering core programming concepts.

App	Description
Inventory & Stock Management	Stock tracking and management
Expense Tracker	Expense logging and tracking
Student Grading System	Student records and GPA calculation

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5. Java Console Projects — ATM & File Organizer

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Two standalone console applications built to practice core OOP concepts — object state management, encapsulation, control flow, and file I/O — without the added complexity of a GUI or MVC layer.

ATM System

• Multi-user registration (Current/Savings) and PIN-based login
• Check balance, deposit, withdraw with insufficient-funds handling
• Encapsulation via an Account class; static ArrayList<Account> as shared in-memory store
• Scanner buffer handling (nextLine() after nextInt()/nextDouble())

File Organizer

• Scans a folder and auto-sorts files into subfolders by extension (.txt, .csv)
• Validates folder path, skips subdirectories and extensionless files
• Auto-creates destination subfolders; reports total files moved
• File I/O via Java's File class (listFiles(), renameTo(), mkdir())

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6. Other Projects

• Flight Reservation System — flight booking with seat selection
• Bank Management System — accounts, deposits, and withdrawals
• Hotel Booking System — room reservation and booking management
• Beginner Projects — console-based exercises covering Java fundamentals

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🛠️ Skills Demonstrated

Language → Java 17
GUI → JavaFX · FXML
Architecture → MVC · OOP (Inheritance · Polymorphism · Encapsulation · Abstraction)
Concepts → Role-based access · CSV persistence · File I/O · Exception handling · Input validation · Generics · Collections
Tools → IntelliJ · Maven · Git · GitHub

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🔗 Connect