java编程计算圆球的体积_已知圆球体积为4/3πr³,试编写一个程序,输入圆球半径,经过计算输出圆球的体积.用JAVA编写的...明天(3月11号)要用....

优质解答

请楼主把以下代码存为Ball.java文件,然后编译运行即可：

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

public class Ball {

public static void main(String[] args) {

InputStreamReader is = new InputStreamReader(System.in);

BufferedReader br = new BufferedReader(is);

try {

System.out.print("请输入圆的半径：");

double n = Double.parseDouble(br.readLine());

System.out.println("圆的体积为："+(Math.PI*4*Math.pow(n,3)/3));

} catch (IOException e) {

System.out.println("系统错误1!");

e.printStackTrace();

} catch (Exception e) {

System.out.println("所输入不为数字!");

e.printStackTrace();

} finally {

try {

is.close();

br.close();

} catch (IOException e) {

System.out.println("关闭流发生错误!");

e.printStackTrace();

}

}

}

}