AbstractVehicle.java

package agency;

import util.TimeProvider;

public abstract class AbstractVehicle implements Vehicle {
    protected String brand;
    protected String model;
    protected int productionYear;

    protected static final int MINIMAL_YEAR_VALUE = 1900;

    public AbstractVehicle(String brand, String model, int productionYear) {
        int currentYear = TimeProvider.currentYearValue();
        if (productionYear < MINIMAL_YEAR_VALUE || productionYear > currentYear) {
            throw new IllegalArgumentException("Invalid production year: " + productionYear);
        }
        this.brand = brand;
        this.model = model;
        this.productionYear = productionYear;
    }

    @Override
    public String getBrand() {
        return brand;
    }

    @Override
    public String getModel() {
        return model;
    }

    @Override
    public int getProductionYear() {
        return productionYear;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        AbstractVehicle that = (AbstractVehicle) o;

        return productionYear == that.productionYear &&
                brand.equals(that.brand) &&
                model.equals(that.model);
    }

    @Override
    public abstract String toString();

    @Override
    public abstract double dailyRentalPrice();
}