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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;
package dhh; 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 NameandAge(studentList, random); //print out the students printf(studentList); } private static void printf(List<Student> studentList) { for (Student temp : studentList) { System.out.println(temp); } } private static void NameandAge(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)内容是:要求砖家解决很多不合理的问题(蓝色笔画红色线,7条线相互垂直)。
(2)说明了:用户对开发者提出的要求,有些根本无法完成(不结合实际)。
(3)启示:处于弱者地位的所谓砖家,在沟通中不能说服公司上层,很软件开发艰难,需要加强沟,从实际出发从而解决问题与需求。
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:
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原文地址:http://www.cnblogs.com/fgr520fgr/p/4542630.html