java/w3/Car.java

public class Car {
    private String brand;
    private String color;
    private double price;

    public Car() {
        this.brand = "未知";
        this.color = "白色";
        this.price = 100000;
    }

    public Car(String brand, String color, double price) {
        this.brand = brand;
        this.color = color;
        if (price > 0) {
            this.price = price;
        } else {
            this.price = 100000;
        }
    }

    public String getBrand() {
        return brand;
    }

    public void setBrand(String brand) {
        this.brand = brand;
    }

    public String getColor() {
        return color;
    }

    public void setColor(String color) {
        this.color = color;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        if (price > 0) {
            this.price = price;
        }
    }
}