Example4_10（方法重载）

class People{
 double getArea(double x,double y){
  return x*y;
 }
 int getArea(int x,double y){
  return(int)(x*y);
 }
 double getArea(float x,float y,float z){
  return(x*x+y*y+z*z)*2.0;
 }
 }
 public class Example4_10{
 public static void main(String arg[]){
  People zhang=new People() ;
  System.out.println("面积:"+zhang.getArea(10,3.88));
  System.out.println("面积:"+zhang.getArea(10.0,8));
 }
}