java編寫圓錐形體積

abstract class shape{

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protected static final double pi = 3.14;

abstract double volume();

}

class spherosome extends shape{

private double radius;

public spherosome(double radius){

this.radius = radius;

}

@override

double volume() {

//

圓球的體積公式=(4/3)πr＾3

return pi*radius*radius*radius*4/3;

}

}

class cone extends shape{

private double radius, height;

public cone(double radius, double height){

this.radius = radius;

this.height = height;

}

@override

double volume() {

//

圓錐的體積公式=(1/3)hπr＾2

return height * pi * radius * radius / 3;

}

}

public class test {

public void testspherosome(double radius){

spherosome spherosome = new spherosome(radius);

system.out.println("圓球的半徑:" + radius + ", 圓球的體積:" + spherosome.volume());

}

public void testcone(double radius, double height){

cone cone = new cone(radius, height);

system.out.println("圓錐的底半徑:" + radius + "，高:" + height + ", 圓錐的體積:" + cone.volume());

}

public static void main(string[] args) {

test test = new test();

test.testspherosome(1);

test.testcone(1, 1);

}

}

java計(jì)算圓的體積和圓錐的體積

abstract?class?Shape{

protected?static?final?double?PI?=?3.14;

abstract?double?volume();

}

class?Spherosome?extends?Shape{

private?double?radius;

public?Spherosome(double?radius){

this.radius?=?radius;

}

@Override

double?volume()?{

// 圓球的體積公式=(4/3)πr＾3

return?PI*radius*radius*radius*4/3;

}

}

class?Cone?extends?Shape{

private?double?radius,?height;

public?Cone(double?radius,?double?height){

this.radius?=?radius;

this.height?=?height;

}

@Override

double?volume()?{

// 圓錐的體積公式=(1/3)hπr＾2

return?height?*?PI?*?radius?*?radius?/?3;

}

}

public?class?Test?{

public?void?testSpherosome(double?radius){

Spherosome?spherosome?=?new?Spherosome(radius);

System.out.println("圓球的半徑:"?+?radius?+?",?圓球的體積:"?+?spherosome.volume());

}

public?void?testCone(double?radius,?double?height){

Cone?cone?=?new?Cone(radius,?height);

System.out.println("圓錐的底半徑:"?+?radius?+?"，高:"?+?height?+?",?圓錐的體積:"?+?cone.volume());

}

public?static?void?main(String[]?args)?{

Test?test?=?new?Test();

test.testSpherosome(1);

test.testCone(1,?1);

}

}

Java編程題 聲明變量保存圓錐的底面半徑和高 計(jì)算圓錐體積和底圓面積

package com.test;

public class Circle {

/* 圓半徑 */

private float r;

/* 圓高 */

private float h;

/*圓的面積*/

private float s;

public static final float PI = 3.1415926f;

public Circle(float r, float h) {

this.r = r;

this.h = h;

}

/* 計(jì)算面積 */

private float countArea(float r)

{

s = PI * r * r;

return (s);

}

/* 計(jì)算體積 */

private float countVolume(float s, float h)

{

return (1.0f/3 * s * h);

}

public static void main(String[] args) {

Circle c = new Circle(3.2f,4.3f);

System.out.println("圓錐的底面積是 " + c.countArea(c.r) + "平方厘米");

System.out.println("圓錐的體積是 " + c.countVolume(c.s, c.h) + "立方厘米");

}

}

java用接口實(shí)現(xiàn)圓錐體的體積

首先定義一個(gè)接口：

public?interface?Inter?{

public?Double?getV(Double?r,Double?h);

}

定義一個(gè)類實(shí)現(xiàn)接口：

import?java.util.Scanner;

public?class?Demo?implements?Inter?{

public?static?void?main(String[]?args)?{

Scanner?in=new?Scanner(System.in);

System.out.println("請(qǐng)輸入圓錐底面圓的半徑：");

double?r=in.nextDouble();

System.out.println("請(qǐng)輸入圓錐的高：");

double?h=in.nextDouble();

Demo?de?=?new?Demo();

de.getV(r,?h);

}

@Override

public?Double?getV(Double?r,?Double?h)?{

double?v;

v=(1d/3)*(Math.PI*r*r)*h;

System.out.println("圓錐的體積v="+v);

return?v;

}

}

如滿意請(qǐng)采納！

圓錐體體積計(jì)算程序（JAVA）

import java.io.*;

public class Cal

{

public static void main(String[] args)

{

float height=0;

float r=0;

double area=0;

try

{

while(true)

{

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.println ("請(qǐng)輸入圓的高:");

try

{

height=Float.parseFloat(br.readLine());

System.out.println ("請(qǐng)輸入圓的半徑:");

r=Float.parseFloat(br.readLine());

area=(r*r*Math.PI);

System.out.println ("面積為:"+area);

break;

}

catch(Exception ex)

{

System.out.println ("請(qǐng)輸入數(shù)字!");

}

}

}

catch(Exception ex)

{

ex.printStackTrace();

}

}

}