实验内容

1. 根据目前所学课堂内容，用java逐步编程实现下述类图，遵循Java编程规范，并为撰写的类提供相应的Javadoc注释。
2. 在FushiSystem.java中已提供部分辅助函数，该类的其它方法，请按上述类图中的要求全部编程实现，最终保证程序在步骤1-7中的执行中，按要求完成功能。
程序运行时可供用户选择要实现的功能，如下图。(此功能已经给出，无需更改)

步骤1：选择1（addStudentToCatalog方法实现的功能）：
添加学生，逐步让用户输入以下内容，包括学生的id 和name，添加成功会提示用户相应信息。

步骤2：选择2（displayStudentCatalog方法实现的功能）：
显示学生目录，包括学生的id和name，格式如下：

步骤3：选择3（displayExamPaper方法实现的功能）：
根据用户输入的学生id，显示该学生的试卷信息，格式如下：

当用户输入不存在的学生id时，提示错误并请用户重新输入。
如果还未为该学生生成试卷，会提示用户“还没有为该学生生成相应的试卷”。

步骤6：选择6（lookupTotalScore方法实现的功能）：
根据用户输入的学生id，显示学生复试试卷的总得分，格式如下：

当用户输入不存在的学生id时，提示错误并请用户重新输入。
如果还未为该学生生成试卷，会提示用户“还没有为该学生生成相应的试卷”。

步骤7：选择7（lookupTestScore方法实现的功能）：

根据用户输入的学生id，显示学生复试试卷的每道题目得分，格式如下：
当用户输入不存在的学生id时，提示错误并请用户重新输入。
如果还未为该学生生成试卷，会提示用户“还没有为该学生生成相应的试卷”。

代码资源

这里免费提供主程序的代码实现，和演示视频，其余内容请【点击此处】付费查看

请注意，源码仅供参考，由抄袭导致的任何后果将由读着自行承担！

主程序代码实现：

import TestUtil.TestDataBase;
import TestUtil.TestItem;
import TestUtil.Tests.EnglishTest;
import TestUtil.Tests.MathTest;
import TestUtil.Tests.ProfessionalTest;
import TestUtil.Tests.Test;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Iterator;
import java.util.Random;


public class FushiSystem {private StudentCatalog studentCatalog= new StudentCatalog();private TestDataBase testDataBase = new TestDataBase();public void addStudentToCatalog(String id) throws Exception {BufferedReader br = new BufferedReader(new InputStreamReader(System.in));System.err.print("Student name> ");//下一行输入就是学生的名称Student student = new Student(id, br.readLine());studentCatalog.addStudent(student);}
public void displayStudentCatalog(){int count = studentCatalog.getNumberOfStudent();for(int i=0;i<count;i++){System.out.println(studentCatalog.getStudent(i));}}
public void displayExamPaper(String id) throws Exception{Student student = lookupStudent(id);System.out.println(student.getExamPaper());}
/*** 这个方法是老师实现的，做了些许修改以适应我们的代码* @param id* @throws Exception*/public void generateExamPaper(String id) throws Exception {Student student = lookupStudent(id);if (testDataBase.getNumberOfTests() < 10) {System.err.println("There are less than ten test questions in the test question bank, "+ "and the test paper cannot be generated.");} else {int[] testTypeNums = new int[3];for (String code : testDataBase.getTests().keySet()) {Test test = testDataBase.getTest(code);if (test instanceof EnglishTest) {testTypeNums[0]++;} else if (test instanceof MathTest) {testTypeNums[1]++;} else if (test instanceof ProfessionalTest) {testTypeNums[2]++;}}if (testTypeNums[0] < 3 || testTypeNums[1] < 3 || testTypeNums[2] < 4) {System.err.println("There are not enough English questions or math questions or professional "+ "questions in the test database.");return;}//采用随机生成试卷Random random = new Random();ExamPaper examPaper = new ExamPaper();for (int i = 0; i < testTypeNums.length; i++) {testTypeNums[i] = 0;}int allTestCount = testDataBase.getNumberOfTests();boolean[] testIsChoose = new boolean[allTestCount];while (examPaper.getNumberOfTestItems() < 10) {int target = random.nextInt(allTestCount);Test test = testDataBase.getTest(target);
if (test instanceof EnglishTest) {if (testTypeNums[0] < 3 && (!testIsChoose[target])) {testTypeNums[0]++;examPaper.addTestItem(new TestItem(test, 0));testIsChoose[target] = true;}} else if (test instanceof MathTest) {if (testTypeNums[1] < 3 && (!testIsChoose[target])) {testTypeNums[1]++;examPaper.addTestItem(new TestItem(test, 0));testIsChoose[target] = true;}} else if (test instanceof ProfessionalTest) {if (testTypeNums[2] < 4 && (!testIsChoose[target])) {testTypeNums[2]++;examPaper.addTestItem(new TestItem(test, 0));testIsChoose[target] = true;}}
}student.setExamPaper(examPaper);System.out.println("Test papers have been generated for this student!");}}
/*** 这个方法是老师实现的，做了些许修改以适应我们的代码* @param id*/public void entryScore(String id) throws  Exception{Student student = lookupStudent(id);int index = 1;BufferedReader br = new BufferedReader(new InputStreamReader(System.in));for(TestItem ti:student.getExamPaper().testItems){System.out.println(String.format("The score of item %d is: ",index));int score;while(true) {try {score = Integer.parseInt(br.readLine());break;} catch (Exception e) {e.printStackTrace();}}if (score > 10 || score < 0) {System.err.println("The score of each test is no more than 10 or less than 0. Please re-enter!");} else {ti.setScore(score);}++index;}}
public void lookupTotalScore(String id) throws Exception{Student student = lookupStudent(id);Double score = student.getExamPaper().getTotalScore();if(score!=null){System.out.println(String.format("The total score of the student is: %f",score));}else {System.err.println("The student doesn't get a test paper yet. Please complete it.");}}
public void lookupTestScore(String id) throws Exception{Student student = lookupStudent(id);int test_items = student.getExamPaper().getNumberOfTestItems();if(test_items==0){System.err.println("The student doesn't get a test paper yet. Please complete it.");}else {for (int i = 0; i < test_items; i++) {System.out.println(String.format("The score of item %d is:%f", i + 1, student.getExamPaper().getTestItem(i).getScore()));}}}
private Student lookupStudent(String id) throws Exception{Student student = null;BufferedReader br = new BufferedReader(new InputStreamReader(System.in));while((student = studentCatalog.getStudent(id))==null){System.err.println("Error, current student is not exist!");System.err.print("Student id> ");id = br.readLine();}return student;}
private void init(){testDataBase.addTest(new EnglishTest("E001", "Translate the following text into English.", 2,"Smooth, fluent and without language problems or wrong words", "C-E"));testDataBase.addTest(new EnglishTest("E002", "Translate the following article content.", 3,"Clear logic and no language problems", "E-C"));testDataBase.addTest(new EnglishTest("E003", "Choose the correct answer based on the content being played.", 3,"Correct answer", "Hearing"));testDataBase.addTest(new EnglishTest("E004", "Translate the following Chinese in English.", 2,"No grammatical errors", "C-E"));testDataBase.addTest(new EnglishTest("E005", "Translate the following English in Chinese.", 2, "Sentence fluent", "E-C"));testDataBase.addTest(new EnglishTest("E006", "Choose the correct answer based on contextual dialogue", 2,"Right", "Hearing"));testDataBase.addTest(new EnglishTest("E007", "Translate the following article content.", 3, "Smooth and fluent", "C-E"));testDataBase.addTest(new EnglishTest("E008", "Translate to Chinese", 3, "Complete translation", "E-C"));testDataBase.addTest(new EnglishTest("E009", "Listen to the dialogue and choose Xiao Ming’s weekend schedule.",3, "Correct answer", "Hearing"));testDataBase.addTest(new EnglishTest("E010", "Translate the following text into English.", 2,"Use the correct words and smooth", "C-E"));
testDataBase.addTest(new MathTest("M001", "Find the inflection points of the following functions.", 2, "Right","no image", "no"));testDataBase.addTest(new MathTest("M002", "Which of the following series converge?", 3, "Right", "no image", "no"));testDataBase.addTest(new MathTest("M003", "Find the differential equation of the following function.", 3,"Necessary problem-solving process", "no image","The first step is to find the integral. The second step is to find the value of the constant c."));testDataBase.addTest(new MathTest("M004", "Find the angle between the two planes A and B.", 2, "Correct answer","http://image.com/m004", "no"));testDataBase.addTest(new MathTest("M005", "Several extreme points in the figure below.", 3, "Right","http://image.com/m005", "no"));testDataBase.addTest(new MathTest("M006", "Find the inflection points of the following functions.", 2, "Right","no image", "no"));testDataBase.addTest(new MathTest("M007", "Find the differential equation of the following function.", 3,"Clear problem solving process and correct value", "no image","Find the value of the constant b and the differential equation"));testDataBase.addTest(new MathTest("M008", "The area enclosed by the following curve and the coordinate axis is?", 1,"Correct answer", "http://image.com/m008", "no"));testDataBase.addTest(new MathTest("M009", "Find general solutions of differential equations.", 2,"The parameters are correct", "no image", "Find the value of the parameter"));testDataBase.addTest(new MathTest("M010", "Find the function f(x).", 2, "Right", "http://image.com/m009", "no"));
testDataBase.addTest(new ProfessionalTest("P001", "What are the characteristics of JAVA language?", 1, "Right","Name at least three of the characteristics", "no", "no image"));testDataBase.addTest(new ProfessionalTest("P002","Fill in the following blanks to realize the calculation of the sum of the numbers between 1-200 that are not divisible by 5.",2, "Correct result at run", "Fill in the code in the blank.", "no", "http://image.com/p002"));testDataBase.addTest(new ProfessionalTest("P003", "The time complexity of the algorithm refers to?", 1,"Correct answer", "no", "no", "no image"));testDataBase.addTest(new ProfessionalTest("P004", "The number sequence bai is: 1,1,1,2,3,4,6,...", 3,"Correct result at run", "Calculation formula when filling in n.","int main()\n" + "{int a[21]={0,1,1},i;\n" + " for(i=1;i<21;i++)\n"+ "   if(i<3) printf(\"%d \",a[i]);\n" + "     else printf(\"%d \",______);\n"+ " printf(\"\\n when n is 20：%d\\n\",a[20]);\n" + " return 0;\n" + "}","no image"));testDataBase.addTest(new ProfessionalTest("P005","The design of the database includes two aspects of design content, they are?", 2, "Similar in meaning","no", "no", "no image"));testDataBase.addTest(new ProfessionalTest("P006", "The difference between java and c.", 2,"At least three points", "At least three points", "no", "no image"));testDataBase.addTest(new ProfessionalTest("P007", "The difference between process and thread.", 3,"At least three points", "At least three points", "no", "no image"));testDataBase.addTest(new ProfessionalTest("P008", "The time complexity of the following code is?", 1, "Right","no", "no", "http://image.com/p008"));testDataBase.addTest(new ProfessionalTest("P009", "Benefits of thread pool.", 3, "Can name the key benefits","no", "no", "no image"));testDataBase.addTest(new ProfessionalTest("P010", "Enter 5 numbers to find their maximum and average.", 3,"Correct result at run", "Time complexity cannot exceed n.)", "no", "no image"));
studentCatalog.addStudent(new Student("2019213001", "吴广胜"));studentCatalog.addStudent(new Student("2019213002", "陈盛典"));studentCatalog.addStudent(new Student("2019213003", "刘子豪"));studentCatalog.addStudent(new Student("2019213004", "仇历"));studentCatalog.addStudent(new Student("2019213005", "郑西泽"));studentCatalog.addStudent(new Student("2019213006", "李梦琪"));studentCatalog.addStudent(new Student("2019213007", "王志"));studentCatalog.addStudent(new Student("2019213008", "张天一"));studentCatalog.addStudent(new Student("2019213009", "周琳琳"));studentCatalog.addStudent(new Student("2019213010", "周爽"));studentCatalog.addStudent(new Student("2019213011", "张涵"));studentCatalog.addStudent(new Student("2019213012", "李依然"));studentCatalog.addStudent(new Student("2019213013", "孟子涛"));studentCatalog.addStudent(new Student("2019213014", "腊志翱"));studentCatalog.addStudent(new Student("2019213015", "张一鸣"));studentCatalog.addStudent(new Student("2019213016", "李华"));studentCatalog.addStudent(new Student("2019213017", "冷子晴"));studentCatalog.addStudent(new Student("2019213018", "金灿"));studentCatalog.addStudent(new Student("2019213019", "朱文杰"));studentCatalog.addStudent(new Student("2019213020", "刘美含"));}
public static void main(String[] args) throws Exception{FushiSystem fushiSystem = new FushiSystem();fushiSystem.init();
StringBuilder sb = new StringBuilder();sb.append("[0] quit").append('\n').append("[1] Add Students to the system").append('\n').append("[2] Display All Students").append('\n').append("[3] Display Exam Paper through student identification code").append('\n').append("[4] Generate random retests papers for designed students").append('\n').append("[5] Enter the retests score of the designed student").append('\n').append("[6] Display the total score of the specified student's retest exam").append('\n').append("[7] Display the score of each question of the designated student's re-examination exam");
System.out.println(sb.toString());System.err.print("choice> ");BufferedReader br = new BufferedReader(new InputStreamReader(System.in));int choice = Integer.parseInt(br.readLine());while(true) {switch (choice) {case 0:{br.close();System.exit(0);break;}case 1:{System.err.print("Student id> ");fushiSystem.addStudentToCatalog(br.readLine());break;}case 2:{fushiSystem.displayStudentCatalog();break;}case 3:{System.err.print("Student id> ");fushiSystem.displayExamPaper(br.readLine());break;}case 4:{System.err.print("Student id> ");fushiSystem.generateExamPaper(br.readLine());break;}case 5:{System.err.print("Student id> ");fushiSystem.entryScore(br.readLine());break;}case 6:{System.err.print("Student id> ");fushiSystem.lookupTotalScore(br.readLine());break;}case 7:{System.err.print("Student id> ");fushiSystem.lookupTestScore(br.readLine());break;}}System.err.print("choice> ");choice = Integer.parseInt(br.readLine());}}

}

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面向对象实验unit2-题目1(综合性题目)：面向对象实验之实现复试系统

实验内容

代码资源

请注意，源码仅供参考，由抄袭导致的任何后果将由读着自行承担！

主程序代码实现：

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