2019秋JAVA第六周课程总结及实验报告

Posted 2022-12-15 jingwenxing

题目：

源代码：

package com.company;

import java.util.Scanner;

public class Main 

    public static void main(String[] args) 
        Scanner sc = new Scanner(System.in);
        double r = sc.nextDouble();
        double h = sc.nextDouble();

        Cylinder a = new Cylinder(r, h);
        a.diapVol();
    


class Circle 
    public static double Pi = 3.1415926535;

    protected double radius;

    Circle()  this.radius = 0; 
    Circle(double r)  this.radius = r; 

    double getRadius()  return this.radius; 
    double getPerimeter()  return 2 * Pi * this.radius; 

    void disp() 
        System.out.println("该圆的半径为: " + this.radius);
        System.out.println("该圆的周长为: " + getPerimeter());
        System.out.println("该圆的面积为: " + Pi * Math.pow(this.radius, 2));
    


class Cylinder extends Circle 
    double height;

    Cylinder (double r, double h) 
        super.radius = r;
        this.height = h;
    

    double getHeight()  return this.height; 
    double getVol()  return Pi * Math.pow(super.radius, 2) * this.height; 
    void diapVol() 
        System.out.println("该圆柱体的体积为: " + getVol());