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云代码 - java代码库

Square,Circle继承Shape类，Rectangle继Square

2018-09-22 作者：不吃鱼举报

[java]代码库

import java.util.Scanner;
public class Main{
    public static void main(String[] args) {
         Scanner scan = new Scanner(System.in);
         double length = scan.nextDouble();
         Square s = new Square(length);
         System.out.printf("%.2f ",s.getPerimeter());
         System.out.printf("%.2f\n",s.getArea());
 
         length = scan.nextDouble();
         double wide = scan.nextDouble();
         Rectangle r = new Rectangle(length,wide);
         System.out.printf("%.2f ",r.getPerimeter());
         System.out.printf("%.2f\n",r.getArea());
 
         double radius = scan.nextDouble();
         Circle c = new Circle(radius);
         System.out.printf("%.2f ",c.getPerimeter());
         System.out.printf("%.2f\n",c.getArea());
 
         scan.close(); 
    }        
} 
class Shape{
    private double length;
    private double wide;
    public Shape(double len) {
        length = len;
    }
    public Shape(double len, double wi) {
        length = len;
        wide = wi;
    }
    public double getLength() {
        return length;
    }
    public double getWide() {
        return wide;
    }
    public double getPerimeter() {
        return 2*(length + wide);
    }
    public double getArea() {
        return length*wide;
    }
}
 
class Square extends Shape{
    public Square(double len){
        super(len, len);
    }
    public Square(double len, double wi) {
        super(len,wi);
    }
    public double getLength() {
        return super.getLength();
    }
    public double getWide() {
        return super.getWide();
    }
    public double getPerimeter() {
        return super.getPerimeter();
    }
    public double getArea() {
        return super.getArea();
    }
}
 
class Rectangle extends Square{
    public Rectangle(double len, double wi) {
        super(len, wi);
    }
    public double getPerimeter() {
        return super.getPerimeter();
    }
    public double getArea() {
        return super.getArea();
    }
}
 
class Circle extends Shape{
    public Circle(double len) {
        super(len);
    }
    public double getPerimeter() {
        return 2*3.14159*super.getLength();
    }
    public double getArea() {
        return 3.14159*super.getLength()*super.getLength();
    }
}

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Square,Circle继承Shape类，Rectangle继Square

[java]代码库

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