Advanced Object Oriented Programming

🏆 Advanced OOP course assignments at SCE College of Engineering

Language: Java | Topics: Interfaces, GUI, Multithreading, Design Patterns

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🎯 Project Theme: Animal Olympics 🦁🏅

A semester-long project building an Animal Olympics competition system with GUI and multithreading.

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🗂️ Project Structure

├── HW1_animal_hierarchy/
├── HW2_gui/
└── HW3_threads/

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📝 Assignments

Assignment 1: Class Hierarchy & Foundations

Topics: Inheritance, Interfaces, Abstract Classes, Encapsulation

Built a complete animal hierarchy for the Olympics system:

Package	Description
Olympics	Medal class with enum type (BRONZE, SILVER, GOLD), tournament name, and year.
mobility	ILocatable interface, Point class for coordinates, abstract Mobile class tracking total distance traveled.
animals	Abstract Animal class with name, speed, and medals array.

Animal Hierarchy:

Mobile (abstract)
├── TerrestrialAnimal (abstract)
│   ├── Dog
│   ├── Cat (with castration status)
│   └── Snake (with toxicity level: low/medium/high)
├── WaterAnimal (abstract)
│   ├── Whale
│   ├── Dolphin
│   └── Alligator (also Terrestrial - uses Delegator pattern)
└── AirAnimal (abstract)
    ├── Eagle (with altitude and wingspan)
    └── Pigeon

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Assignment 2: GUI & Interfaces

Topics: Swing GUI, Event Handling, Interfaces, Exceptions

Added graphical interface to the Olympics system:

Class	Description
CompetitionFrame	Main JFrame window with menu and controls. Contains the main() method.
ZooPanel	JPanel for drawing and animating animals on screen.
AddAnimalDialog	JDialog for adding new animals with input validation.

Interfaces Implemented:

Interface	Description
IDrawable	Methods for loading images and drawing animals: loadImages(), drawObject().
IMoveable	Methods for animal movement: getAnimalName(), getSpeed(), move().
IAnimal	Combines IMoveable with animal-specific behavior.
IClonable	For cloning animal objects.

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Assignment 3: Multithreading & Concurrency

Topics: Threads, Synchronization, wait/notify, Race Conditions

Added real-time race simulation with multithreading:

Class	Description
AnimalThread	Implements Runnable. Moves animal forward, waits for start signal, notifies on finish. Uses synchronized blocks and wait()/notify().
Scores	Thread-safe score storage using Collections.synchronizedMap(). Records finish times.
Referee	Waits for animals to finish, records their times to Scores.
Tournament	Manages multiple competitions and coordinates threads.

Competition Types:

Type	Animals
🏃 Running	Dog, Cat, Snake, Alligator
🏊 Swimming	Whale, Dolphin, Alligator
🦅 Flying	Eagle, Pigeon

Thread Synchronization:

• startFlag - shared Boolean for race start signal
• finishFlag - shared Boolean for finish notification
• Synchronized blocks on animal movement to prevent race conditions

👩‍💻 Contributors

Linoy Nisim Pur
Noa Shem Tov

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📄 License

Academic coursework at SCE College of Engineering.