正在尝试调用main中的子类的构造函数

class Vehicle {
    String type;

    Vehicle(String type) {
        this.type = type;
    }
}

class Car extends Vehicle {
    int numberOfDoors;

    Car(String type, int numberOfDoors) {
        super(type); // 调用父类的构造函数
        this.numberOfDoors = numberOfDoors;
    }
}

public class Main {
    public static void main(String[] args) {
        Car myCar = new Car("Sedan", 4);
        System.out.println("Car type: " + myCar.type + ", Number of doors: " + myCar.numberOfDoors);
    }
}

class Vehicle {
    String type;

    Vehicle(String type) {
        this.type = type;
    }
}

class Car extends Vehicle {
    int numberOfDoors;

    Car(int numberOfDoors) { // 错误：未调用父类构造函数
        this.numberOfDoors = numberOfDoors;
    }
}

class Car extends Vehicle {
    int numberOfDoors;

    Car(String type, int numberOfDoors) {
        super(type); // 正确调用父类构造函数
        this.numberOfDoors = numberOfDoors;
    }
}