1、请运行下面code,指出其功能;
Driver.java的功能就是随机生成三个姓和三个名作为人的名字,再生成一个以及随机生成18-38以内的随机整数作为年龄;

2、请将该code进行代码重构,使之模块化,并易于阅读和维护;
重构两个for循环的内容,一个用put(studentList)来输出随机产生的姓名和年龄;一个 generate_radom(studentList, random)来产生随机的姓、名和年龄;这样就方便其他人能读懂程序的功能室再干啥;使用的是myeclipse 中的refactor进行重构。除此之外,今天(5月26日),经过昨天老师的讲解,我再次对代码进行重构,把循环上限和年龄下限重构成常量。分别是:generate_threepepople和age_floor
import java.util.ArrayList;
import java.util.List;import java.util.Random;public class Driver { private static String[] lastNames = {"Doe", "Smith", "Jones", "Adams", "Marshall", "Thompson", "Bradley", "Brown", "White", "Franklin", "Davis", "Cohn", "Clark"}; private static String[] firstNames = {"Mary", "John", "Susan", "Michael", "David", "Lisa", "Wendy", "Diane", "Kelly", "Claire", "Elizabeth", "Mitchell", "Richard"}; public static void main(String[] args) { // create an empty list List<Student> studentList = new ArrayList<Student>(); // initialize random generator Random random = new Random(); // create random number of students maxRandomNumber(studentList, random); //print out the students printStudent(studentList); } public static void printStudent(List<Student> studentList) { for (Student temp : studentList) { System.out.println(temp); } } public static void maxRandomNumber(List<Student> studentList, Random random) { for (int i=0; i < 3; i++) { // get random first name String tempFirstName = firstNames[random.nextInt(firstNames.length)]; // get random last name String tempLastName = lastNames[random.nextInt(lastNames.length)]; // get random age int age = 18 + random.nextInt(20); // create student Student tempStudent = new Student(tempLastName, tempFirstName, age); // add them to the list studentList.add(tempStudent); } }}3、观看视频The Expert (Short Comedy Sketch),写出观后感(内容是什么,说明了什么问题,有什么启示),提交到博客!
1,明确自己对开发的目的,不能天马行空的想一切都是可以的。2,所以要求要符合实际,不能想当然就可以。3,对开发目的的实现要切合实际,从实际出发。
4、学习在项目中使用 jar 文件:
1)在下列code中导入jar文件“commons-lang3-3.3.2.jar”,并运行,将运行结果截图提交到博客:


2)将四则运算程序的功能部分和界面部分分离,并将功能部分封装为jar文件(对java语言)或dll(对c语言);