JAVA题目~圆锥类Cone Exp03-2

【问题描述】定义一个圆锥类Cone，为其设置私有成员变量：radius(底面半径)和height(高)。添加两个参数的构造方法，用两个参数分别初始化两个成员变量；添加无参构造方法，无参构造方法的方法体为空。
公有的方法getVolume()返回圆锥的体积，方法getArea()返回圆锥的底面积；一个参数的方法setRadius()和setHeight()分别用参数设定圆锥的底面半径和高；getRadius()和getHeight()分别返回圆锥的底面半径和高。
在TestCone类的main()方法中创建Cone类的对象c1，c1的底面半径和高均从键盘输入，然后输出c1的底面积和体积。再用默认构造方法创建Cone类的对象c2，将c2的底面半径设置为c1的底面半径加1，将c2的高设置为c1的高加2，再输出c2的底面积和体积。输入输出格式如样例所示，所有浮点数保留小数点后3位。
【样例输入1】
3 4
【样例输出1】
The floorage of c1 is 28.274, and the volume is 37.699
The floorage of c2 is 50.265, and the volume is 100.531

【样例输入2】
5 8
【样例输出2】
The floorage of c1 is 78.540, and the volume is 209.440
The floorage of c2 is 113.097, and the volume is 376.991

import java.util.Scanner;

class Cone
{
	private double radius;
	private double height;
	public Cone(double radius, double height) {
		super();
		this.radius = radius;
		this.height = height;
	}
	public Cone()
	{
		
	}
	public double getVolume() 
	{
		return getArea()*height/3.0;
	}
	public double getArea()
	{
		return Math.PI*radius*radius;
	}
	public double getRadius() {
		return radius;
	}
	public void setRadius(double radius) {
		this.radius = radius;
	}
	public double getHeight() {
		return height;
	}
	public void setHeight(double height) {
		this.height = height;
	}
	
}
public class TestCone {
	public static void main(String args[])
	{
		Scanner sc=new Scanner(System.in);
		double r=sc.nextDouble();
		double h=sc.nextDouble();
		Cone c1=new Cone(r,h);
		System.out.printf("The floorage of c1 is %.3f , and the volume is %.3f\n",c1.getArea(),c1.getVolume());
		Cone c2=new Cone();
		c2.setRadius(c1.getRadius()+1);
		c2.setHeight(c1.getHeight()+2);
		System.out.printf("The floorage of c2 is %.3f , and the volume is %.3f",c2.getArea(),c2.getVolume());
		sc.close();
	}

}