类Area的getArea方法是一个重载方法

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 kkkkk { 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)); }