用java写一个程序，要求输入3个长方体的长宽高 并分别求出面积和表体积

Answer 1

import java.util.Scanner;

public class Du2 {

public static void main(String args[]) {

//第一个长繁体
double[] ary = getCuboidLengthFromInput();
printCuboidAreaAndCubage(ary);

//第二个长方体
double[] ary2 = getCuboidLengthFromInput();
printCuboidAreaAndCubage(ary2);

////第3个长方体
double[] ary3 = getCuboidLengthFromInput();
printCuboidAreaAndCubage(ary3);

}

private static void printCuboidAreaAndCubage(double[] ary) {
Cuboid first = new Cuboid(ary[0], ary[1], ary[2]);

double area = first.getArea();
double cubage = first.getCubage();

System.out.println("长方体的表面积为: " + area);
System.out.println("长方体的体积为：" + cubage);

System.out.println();
}

private static double[] getCuboidLengthFromInput() {
Scanner scanner = new Scanner(System.in);

System.out.print("请输入长方体的长：");
double length = scanner.nextDouble();

System.out.print("请输入长方体的宽：");
double width = scanner.nextDouble();

System.out.print("请输入长方体的高：");
double height = scanner.nextDouble();

double[] ary = {length, width, height};

return ary;
}
}

class Cuboid{//长方体类
private double length;//长
private double width;//宽
private double height;//高

public Cuboid(double length, double width, double height){
this.length = length;
this.width = width;
this.height = height;
}

public double getArea(){
return 2 * (length * width + length * height + width * height);
}

public double getCubage(){
return length * width * height;
}

}
-----------------------
请输入长方体的长：2
请输入长方体的宽：4
请输入长方体的高：5
长方体的表面积为: 76.0
长方体的体积为：40.0

请输入长方体的长：5
请输入长方体的宽：8
请输入长方体的高：20
长方体的表面积为: 600.0
长方体的体积为：800.0

请输入长方体的长：3
请输入长方体的宽：6
请输入长方体的高：9
长方体的表面积为: 198.0
长方体的体积为：162.0

Answer 2

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Demo
{

/**
* @param args
*/
public static void main(String[] args)
{
// 定义长，宽，高
double chang = 0, kuan = 0, gao = 0;

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
for (int i=0; i <3; i++)
{
try
{
System.out.println("请输入第 "+(i+1)+" 个长方体的长：");
chang = Double.parseDouble(br.readLine());
System.out.println("请输入第 "+(i+1)+" 个长方体的宽：");
kuan = Double.parseDouble(br.readLine());
System.out.println("请输入第 "+(i+1)+" 个长方体的高：");
gao = Double.parseDouble(br.readLine());
// 表面积
double eare = (chang*kuan)*2 + (chang*gao)*2 + (kuan*gao)*2;
// 体积
double bulk = chang * kuan * gao;
System.out.println("第"+(i+1)+"个长方形的表面积为："+eare);
System.out.println("第"+(i+1)+"个长方形的体积为："+bulk);
}
catch (IOException e)
{
e.printStackTrace();
}
}

}

}

Answer 3

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package com.test;

import java.util.Scanner;

/**
*
* @author Administrator
*/
public class Changfangxing {
private int length;
private int width;
private int heigth;

public Changfangxing(int l,int w,int h){
this.length = l;
this.width = w;
this.heigth = h;
}

public int S(){
return 2 * (length * width + length * heigth + width * heigth);
}

public int V(){
return length * width * heigth;
}

public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int length = scanner.nextInt();
int width = scanner.nextInt();
int heigth = scanner.nextInt();

Changfangxing changfangxing = new Changfangxing(length, width, heigth);

System.out.println("面积：" + changfangxing.S());
System.out.println("体积：" + changfangxing.V());
}
}

Answer 4

这种程序就不用拿出来问了吧