【源码】
class Rect{
double width;
double height;
double getArea(){
return width*height;
}
}
class Cir{
double radius;
double getCircle(){
return 3.14*radius*radius;
}
}
public class Example{//主类
public static void main(String args[]){
Rect rectangle;
Cir circle;
rectangle=new Rect();
circle=new Cir();
rectangle.width=1.819;
rectangle.height=1.5;
circle.radius=1;
double area1=rectangle.getArea();
double area2=circle.getCircle();
System.out.println("矩形面积:"+area1);
System.out.println("矩形面积:"+area2);
}
}
【编译结果】