接口与实现接口的类.doc

实验报告课程名称面向对象程序设计实验名称实验四、接口与实现接口的类日期2016-10-14学生学号姓名班级实验目的： 通过本次实验，要求学生能进一步掌握接口、java.lang包中的基础类库和java.util包中的工具类库的使用方法。实验条件： 电脑一台、能上网查阅资料。1.定义Person类，包含name（姓名）、birthday（出生日期）、idCard（身份证号）、sex（性别）、age(年龄)等基本信息，通过使用Comparator接口实验Person类可以按姓名、年龄、出生日期等多种比较规则进行排序。源代码：Person.java:package com.jsjx.char4;import java.util.Calendar;import java.util.Comparator;public class Person String name;String idCard;Calendar birthday = Calendar.getInstance();char sex;int age; public Person() public Person(String name,int year,int month,int day,String idCard,char sex,int age) = name;birthday.set(year, month,day);this.idCard = idCard;this.sex = sex;this.age = age;class CompareName implements ComparatorOverridepublic int compare(Person o1, Person o2) return pareTo();class CompareBirthday implements Comparator Overridepublic int compare(Person o1, Person o2) return pareTo(o2.birthday);class CompareAge implements Comparator Overridepublic int compare(Person o1, Person o2) return new Integer(o1.age).compareTo(new Integer(o2.age);main.javapackage com.jsjx.char4;import java.util.Arrays;public class main public static void main(String args) int n =3;Person arr = new Personn;arr0 = new Person(张三,1976,3,26,350821,男,20);arr1 = new Person(李四,1995,4,27,350821,男,12);arr2 = new Person(王五,1996,10,28,350821,女,19);for(int i=0;in;i+) System.out.println(姓名： + + 出生日期： + arri.birthday.get(1)+年+arri.birthday.get(2)+月+arri.birthday.get(3)+日+ ID： + arri.idCard + 年龄：+arri.age);Arrays.sort(arr,new CompareName(); System.out.println(); for(int i=0;ic&a+cb&b+ca) this.a = a;this.b = b;this.c = c; else System.out.println(这三条边无法构成三角形);public boolean IsTriangle() return a+bc&a+cb&b+ca;public double area() double l = perimeter()/ 2;return Math.sqrt(l * (l - a) * (l - b) * (l - c);public double perimeter() return a + b + c;class test public static void main(String args) Scanner s = new Scanner(System.in);double r;System.out.println(输入圆的半径);r = s.nextDouble();IShape c = new Circle(r);System.out.println(圆的面积是+c.area()+周长是+c.perimeter();System.out.println(输入正方形的边长);r = s.nextDouble();c = new Square(r);System.out.println(圆的面积是+c.area()+周长是+c.perimeter();System.out.println(输入三角形的三条边);double i,j,k;i = s.nextDouble();j = s.nextDouble();k = s.nextDouble(