The state of a car is defined by its fields. To follow Java best practices, we use by marking these fields private and providing public getter and setter methods. This protects the data from unauthorized interference.
: A double representing the current gas or charge. IsRunning : A boolean flag to track the engine state. 3. Implementation Example Below is a standard implementation of a robust Car class. car-class-java
public class Car { // Attributes private String make; private String model; private int year; private double fuelLevel; private boolean isRunning; // Constructor public Car(String make, String model, int year) { this.make = make; this.model = model; this.year = year; this.fuelLevel = 100.0; // Starts with a full tank this.isRunning = false; } // Behavioral Methods public void startEngine() { if (fuelLevel > 0) { isRunning = true; System.out.println("The " + model + " engine roars to life."); } else { System.out.println("Out of fuel. Cannot start."); } } public void drive(double distance) { if (isRunning) { fuelLevel -= (distance * 0.05); // Simple fuel consumption logic System.out.println("Driving... Remaining fuel: " + fuelLevel + "%"); } else { System.out.println("Start the engine first!"); } } // Getters and Setters public String getModel() { return model; } public void setModel(String model) { this.model = model; } } Use code with caution. Copied to clipboard 4. Advanced Concepts: Inheritance and Polymorphism The state of a car is defined by its fields
The Car class is more than a coding drill; it is a demonstration of how real-world entities are modeled in software. By mastering encapsulation, state management, and class hierarchy, a developer builds a foundation for complex system architecture. : A double representing the current gas or charge