1.请运行下面code,指出其功能;
(需附运行结果截图,并用简短文字描述其功能)
功能:随机生成三个人的姓、名和年龄。年龄的值在18-38之间。
2、请将该code进行代码重构,使之模块化,并易于阅读和维护;
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 mt(studentList, random); //print out the students maotao(studentList); } public static void maotao(List<Student> studentList) { for (Student temp : studentList) { System.out.println(temp); } } public static void mt(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
内容:公司要做一个新产品,要求画七根红线,一部分用绿色,一部分用透明,尔而且七根线两两垂直。在团队交流中,都认为不能达到客户的需求。项目经理认为开发人员是专家,所以公司能满足客户任何的要求。
做事应该根据实际情况来做。
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: