Java實驗題3_3_林大銳格平台

標籤：util   ann   scan   tin   float   print   can   oat   ext   

import java.util.Scanner;abstract class Shape{    abstract float GetArea();    abstract float GetPerimeter();}class Rectangle{    private double x,y;    public Rectangle(int i, int j) {x=i;y=j;}public float GetArea(){return (float)(x*y);}public float GetPerimeter(){return (float)((x+y)*2) ;}//write code here}class Circle{private double a;    public Circle(int i) {a=i;}public float GetArea(){return (float)(a*3.14*a);}public float GetPerimeter(){return (float)(3.14*2*a);}    //write code here}public class Main{    public static void main(String[] args){    Scanner sca = new Scanner(System.in);    int a = sca.nextInt();    int b = sca.nextInt();    int r = sca.nextInt();        Rectangle aa = new Rectangle(a,b);        System.out.println(aa.GetArea());        System.out.println(aa.GetPerimeter());        Circle c = new Circle(r);        System.out.println(c.GetArea());        System.out.println(c.GetPerimeter());    }}

　　

Java實驗題3_3_林大銳格平台