java - 构造函数给出 2 个错误

Question

package vehicleapp;

public class Car extends Vehicle {
    int seatCap;

    public Car(String name, int modelNo, int seatCap) {
        this.seatCap = seatCap;
        super(name, modelNo);
    }
}

这段代码有什么问题？

Answer 1

super(name, modelNo); 必须是构造函数主体中的第一条语句(无论何时显式包含它)，因为父类(super class)构造函数必须在子类主体之前执行类构造函数:

public Car(String name, int modelNo, int seatCap) {
    super(name, modelNo);
    this.seatCap = seatCap;
}