java求图形的面积和、周长.docx

实验三实验报告实验名称求图形的面积和、周长和实验目的通过本次实验使学生掌握java语言对抽象类的定义、方法重写、多态等知识点的用法实验内容 代码：import java.util.Scanner;public class TsetShape public static double calculateArea(MyShape s) double result = 0.0d; for (int i = 0; i s.length; +i) result += si.getArea(); return result; public static double calculateRound(MyShape s) double result = 0.0d; for (int i = 0; i s.length; +i) result += si.getRound(); return result; public static void printAllShapse(MyShape s) System.out.println(所有图形:); for (int i = 0; i s.length; +i) System.out.println(si); public static void main(String args) /*Scanner scan =new Scanner(System.in); System.out.println(); MyShape myShape=new MyShape4;for (int i=0;i5;i+)int n=scan.nextInt();*/ MyShape myShape = new Square(8), new Square(10), new Circle(8), new Triangle(8, 6, 6), new Triangle(10, 10, 10) ;printAllShapse(myShape); System.out.println(面积和是: + calculateArea(myShape);System.out.println(周长和是: + calculateRound(myShape); ;abstract class MyShape private String name; public MyShape(String name) = name; public abstract double getArea(); public abstract double getRound(); public String toString() return + name + , 面积是: + this.getArea() + ，周长是: + this.getRound(); class Circle extends MyShape private double r; public Circle(double r) super(圆形, 半径是: + r); this.r = r; public double getArea() return Math.PI * r * r; public double getRound() return 2 * Math.PI * r; class Square extends MyShape private double a; public Square(double a) super(正方形, 边长是: + a); this.a = a; public double getArea() return a * a; public double getRound() return 4 * a; class Triangle extends MyShape /三角形private double a;private double b;private double c;public Triangle(double a, double b, double c) super(三角形, 三边是: + a + , + b + , + c);this.a = a;this.b = b;this.c = c;public double getArea() double p = (a + b + c) / 2;double s =java.lang.Math.sqrt(p * (p - a) * (p - b) * (p - c);return s;public double getRound(