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));
}
}