例4-8.txt

java电子版源码 java电子版源码

class People
{   
    float getArea(float r)
    { 
       return 3.14f*r*r;
    }
   double getArea(float x,int y) 
    { 
       return x*y;
    }
    float getArea(int x,float y) 
    {   
       return x*y;
    }
    double getArea(float x,float y,float z) 
    {   
       return (x*x+y*y+z*z)*2.0;
    }
}
public class Example
{
   public static void main(String args[])
   {
     People zhang=new People();
     System.out.println("求半径是100的圆的面积:"+zhang.getArea(100));
     System.out.println("求单位立方体的表面积:"+zhang.getArea(1,1,1));
   }
}