题解 | #补全构造方法#

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int x = scanner.nextInt();
            int y = scanner.nextInt();
            int z = scanner.nextInt();
            Sub sub = new Sub(x, y, z);
            System.out.println(sub.calculate());
        }
    }

}

class Base {

    private int x;
    private int y;

    public Base(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

}

class Sub extends Base {

    private int z;

    public Sub(int x, int y, int z) {

        //write your code here
        super(x,y);//使用 super(x, y) 调用父类的构造方法来初始化 x 和 y，this.z = z 用于给新属性 z 赋值
        this.z=z;
        


    }

    public int getZ() {
        return z;
    }

    public int calculate() {//子类的x,y,z乘积计算
        return super.getX() * super.getY() * this.getZ();//使用 super.getX() 和 super.getY() 从基类获取 x 和 y 的值，this.getZ() 获取 z 的值。
    }

}