public class Main {
public static void main(String[] args) {
square obj = new square();
obj.zouchang();
obj.mainji();
}
}
class Graphic {
public void zhouchang(){
}
public void mainji(){
}
}
class Circle extends Graphic {
int r=10;
public void zouchang(){
double zc = 2*3.14*r;
System.out.println("圆形的周长是:"+zc);
}
public void mainji(){
double mj = 2*3.14*r*r;
System.out.println("圆形的面积是:"+mj);
}
}
class square extends Graphic {
int l=5;
int h=2;
public void zouchang(){
double zc = 2*l+2*h;
System.out.println("长方形的周长是:"+zc);
}
public void mainji(){
double mj = l*h;
System.out.println("长方形的面积是:"+mj);
}
}