sphere.java

Java面向对象编程(随书配套源代码) 阐述了面向对象编程的思想

package chapter7;
public class Sphere 
{
	private static double PI =3.14;
	
	private double radius ;
	private double xCenter;
	private double yCenter;
	private double zCenter;
	
	public Sphere(double r,double x, double y,double z)
	{
		this.radius = r;
		this.xCenter = x;
		this.yCenter = y;
		this.zCenter = z;	
	}
	public double getVolume()
	{
		double r = this.radius;
		System.out.println("当前r值："+r);
		double volume = 4/3*PI*r*r*radius;
		return volume;
	}	
	public double getVolume (double radius)
	{
		this.radius = radius;
		double volume = 4/3*PI*this.radius * this.radius * radius;
		return volume;
		
	}	
	public static void main(String[] args) 
	{
		Sphere globe = new Sphere(4,2,3,0);
		Sphere ball = new Sphere(5,3,2,1);
		
		System.out.println("globe体积：" + globe.getVolume());
		System.out.println("ball体积：" + ball.getVolume());
	}
}