public class MultiSphere
{
public static viod main(String[] args)
{
double tiji1=0.0,area1=0.0;
String shade1;
Sphere sphere=new Sphere();
sphere.Get();
tiji1=sphere.Count1();
area1=sphere.Count2();
shade1=new toString();
}
}
import java.util.Scanner;
import java.lang.*;
public class Sphere{
private int zhijin,r=0;
private double tiji=0.0,area=0.0,pi=3.14; public int Get()
{
Scanner scan=new Scanner(System.in); System.out.println("Enter the zhijin of the ball:");
zhijin=scan.nextInt();
}
public Count1()
{
r=zhijin/2;
tiji=(4/3)*pi*Math.pow(r,3);
System.out.println(tiji);
return;
}
public Count2()
{
r=zhijin/2;
area=4*pi*Math.pow(r,2); System.out.println(area);
return;
}
String toString()
{
String shade="the ball is round!";
System.out.println(shade);
return shade;
}
}
计算球面积和体积的...到底错哪啊...郁闷死了,高手帮忙谢谢
{
public static viod main(String[] args)
{
double tiji1=0.0,area1=0.0;
String shade1;
Sphere sphere=new Sphere();
sphere.Get();
tiji1=sphere.Count1();
area1=sphere.Count2();
shade1=new toString();
}
}
import java.util.Scanner;
import java.lang.*;
public class Sphere{
private int zhijin,r=0;
private double tiji=0.0,area=0.0,pi=3.14; public int Get()
{
Scanner scan=new Scanner(System.in); System.out.println("Enter the zhijin of the ball:");
zhijin=scan.nextInt();
}
public Count1()
{
r=zhijin/2;
tiji=(4/3)*pi*Math.pow(r,3);
System.out.println(tiji);
return;
}
public Count2()
{
r=zhijin/2;
area=4*pi*Math.pow(r,2); System.out.println(area);
return;
}
String toString()
{
String shade="the ball is round!";
System.out.println(shade);
return shade;
}
}
计算球面积和体积的...到底错哪啊...郁闷死了,高手帮忙谢谢
Count()的两个方法并未返回任何变量,引用对象Sphere调用Count1(),Count2()方法,竟然分别绑定到两个双精度型变量
import java.lang.*;
public class MultiSphere
{
public static void main(String[] args)
{
Sphere sphere=new Sphere(1.2,2.4);
sphere.Get();
sphere.Count1();
sphere.Count2();
sphere.toString();
}
} class Sphere{
private double zhijin;
private double pi=3.14,r=0.0;
private double tiji,area;
public Sphere(double m,double n)
{
tiji=m;
area=n;
}
public void Get()
{
Scanner scan=new Scanner(System.in); System.out.println("Enter the zhijin of the ball:");
zhijin=scan.nextDouble();
}
public double Count1()
{
r=zhijin/2;
tiji=(4/3)*pi*Math.pow(r,3);
System.out.println(tiji);
return tiji;
}
public double Count2()
{
r=zhijin/2;
area=4*pi*Math.pow(r,2); System.out.println(area);
return area;
}
public String toString()
{
String shade="the ball is round!";
System.out.println(shade);
return shade;
}
}
Scanner sc = new Scanner(System.in);
System.out.print("请输入球体的半径;");
double radius = sc.nextDouble();
Sphere shpere = new Sphere(radius);
System.out.println(shpere.toString());
System.out.println("球的表面积:" + shpere.getSurfaceArea());
System.out.println("球的体积:" + shpere.getVolume());
}
}class Sphere { private double radius;
public Sphere(double radius) {
this.radius = radius;
} public double getVolume() {
// 不能使用 4/3,这样的结果是1。要用 4.0/3
return (4.0 / 3) * Math.PI * Math.pow(radius, 3);
} public double getSurfaceArea() {
return 4 * Math.PI * Math.pow(radius, 2);
} public String toString() {
return "Sphere, radius is " + radius;
}
}