Defence System

This project is a simple defense system simulator created to practice and demonstrate object-oriented programming (OOP) concepts in Java.
The system features a main controller that manages various defense units, including a Helicopter, a Tank, and a Submarine.

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Features

• Multiple defense units: Supports three types of defense units — Helicopter, Tank, and Submarine.
• Centralized control: A MainController allows the user to manage and interact with all defense units from a single interface.
• Real-time communication: Defense units can send and receive messages from the main controller in real time.
• Observer pattern: The system uses the observer pattern to notify all defense units of any changes in the environment (e.g., "Area Clear").

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OOP Concepts Illustrated

This project demonstrates the following key OOP concepts:

• Inheritance:
  The Helicopter, Tank, and Submarine classes all implement the SuperDefence interface, inheriting its methods and providing their own specific implementations.

• Polymorphism:
  The MainController can interact with all defense units through the SuperDefence interface, regardless of their specific type, allowing greater flexibility and extensibility.

• Encapsulation:
  Each defense unit encapsulates its own data (e.g., ammo count, fuel level) and methods, hiding the internal implementation details from other objects.

• Observer Pattern:
  The MainControllerObservable class acts as an observer, notifying all registered defense units of any changes in the environment, promoting loose coupling between the main controller and the defense units.

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Getting Started

To run the project, you'll need:

• Java installed on your system
• NetBeans IDE for running the application

Steps:

1. Clone the repository to your local machine.
2. Open the project in NetBeans.
3. Run the Starter.java file to start the application.

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How to Use

1. The main controller window will appear, along with the windows for each defense unit.
2. Use the main controller to send messages to the defense units — either individually or as a broadcast.
3. Mark the area as "clear" to enable the defense units' weapons.
4. Each defense unit has its own controls, including:
   • Sliders for fuel and ammo
   • Buttons for firing weapons

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Built with Java and NetBeans to demonstrate core OOP principles in a fun and interactive way.