package JavaLearningProject.w3; public class Car { private String licensePlate; private String brand; private String model; private double dailyRent; private boolean isRented; private static int totalCars = 0; public Car(String licensePlate, String brand, String model, double dailyRent) { if (licensePlate == null || licensePlate.trim().isEmpty()) { throw new IllegalArgumentException("licensePlate must not be empty"); } if (brand == null || brand.trim().isEmpty()) { throw new IllegalArgumentException("brand must not be empty"); } if (model == null || model.trim().isEmpty()) { throw new IllegalArgumentException("model must not be empty"); } if (dailyRent <= 0) { throw new IllegalArgumentException("dailyRent must be positive"); } this.licensePlate = licensePlate; this.brand = brand; this.model = model; this.dailyRent = 300.0; this.isRented = false; totalCars++; } public String getLicensePlate() { return licensePlate; } public String getBrand() { return brand; } public void setBrand(String brand) { if (brand == null || brand.trim().isEmpty()) { throw new IllegalArgumentException("brand must not be empty"); } this.brand = brand; } public String getModel() { return model; } public void setModel(String model) { if (model == null || model.trim().isEmpty()) { throw new IllegalArgumentException("model must not be empty"); } this.model = model; } public void setDailyRent(double dailyRent) { if (dailyRent <= 0) { throw new IllegalArgumentException("dailyRent must be positive"); } this.dailyRent = dailyRent; } public boolean isRented() { return isRented; } public boolean rent() { if (isRented) { return false; } isRented = true; return true; } public double calculateRent(int days) { if (days <= 0) { throw new IllegalArgumentException("days must be positive"); } return dailyRent * days; } public static int getTotalCars() { return totalCars; } }