java(重载方法)

 

class People{
 double getArea(double x,int 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 args[]){
   People zhang=new People();
   System.out.println("面积："+zhang.getArea(10,3.88));
   System.out.println("面积："+zhang.getArea(10.0,8));
  }
 }