Design a class hierarchy used to represent test papers that would be given in sc

Question

Design a class hierarchy used to represent test papers that would be given in school. It should include at least the following:

Each question has:

For each question, we should be able to create a String representation of the question as it should be presented to the student (for example, during a test or quiz).

An ObjectiveQuestion is a type of question which has a definitive answer. For example, the question 2+3 has the answer 5. (A non-objective question would be one where there's no single correct answer, e.g., something like, "The Civil War was neither civil nor a war. Discuss.".)

Each ObjectiveQuestion has:

For each ObjectiveQuestion, we should be able to create a String representation of the question as it should be presented to the student during a Test. We should also be able to create a String representation of the question which includes the correct answer, such as one that a grader might use when grading a paper.

A fill in the blank question is a kind of question where the correct answer fills in a missing word in the provided text. For example. " _____ was the 16th US President."

Each FillInTheBlankQuestion has:

For each FillInTheBlankQuestion, we should be able to create a String representation of the question as it should be presented to the student during a Test. This should include the blank space. We should also be able to create a String representation of the question which includes the correct answer, such as one that a grader might use when grading a paper.

In a test representation, this might look something like:

______ was the 16th US President.

and in an answer key representation, it might look something like:

___Abraham Lincoln___ was the 16th US President.

A MultipleChoiceQuestion is a kind of question in which there are multiple possible solutions but only one correct solution.

Each MultipleChoiceQuestion has:

For each MultipleChoiceQuestion, we should be able to create a String representation of the question as it should be presented to the student during a Test. We should also be able to create a String representation of the question which includes the correct answer, such as one that a grader might use when grading a paper.

In a test representation, this might look something like:

Who lives in a pineapple under the sea?

and in an answer key, could look something like:

Who lives in a pineapple under the sea?

Each test has:

We should be able to generate a String representation of a Test as well as its answer key. We should also be able to send either of these to a file whose name is determined at runtime.

Write a program that uses your classes in order to generate both a test and an answer key, writing each to the screen and to files chosen at runtime.

Explanation / Answer

package chegg;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Scanner;

public class TestDriver{
   public static void main(String args[]){
       Scanner sc=new Scanner(System.in);
      
       Test t=new Test();
       Question q1=new ObjectiveQuestion(10,5,10,"How many seconds in an hour?", "3600");
       Question q2=new FillInTheBlankQuestion(10,3,10,"is the color of rose?", "red");
       t.addQuestion(q1);
       t.addQuestion(q2);
       System.out.println(t);
       AnswerKey ak=new AnswerKey(t);
       for(Question q: ak.test.questions){
           System.out.println(q.QuestionText);
           String ans=sc.next();
           ak.addAnswer(q, ans);
       }

       System.out.println(ak);
      
      
   }
  
}
class Test{
   ArrayList<Question> questions;
   int totalPoints;
   Test(){
       questions=new ArrayList<Question>();
   }
   Test(ArrayList<Question> questions){
       this.questions=questions;
       for(int i=0;i<questions.size();i++){
           totalPoints+=questions.get(i).point;
       }
   }
   public void addQuestion(Question q){
       questions.add(q);
   }
   @Override
   public String toString(){
       return "No of question :"+questions.size()+" Total Points :"+totalPoints;
   }
}
class AnswerKey{
   Test test;
   HashMap<Question,String> answers;
   AnswerKey(Test t){
       test=t;
       answers=new HashMap<Question,String>();
   }
   public void addAnswer(Question q, String ans){
       if(q instanceof ObjectiveQuestion){
           answers.put(q, ans);
       }else if (q instanceof FillInTheBlankQuestion){
           answers.put(q, "_"+ans+"_ "+q.QuestionText);
       }else if(q instanceof MultipleChoiceQuesion){
           answers.put(q, "****"+ans+"****");
       }
   }
   public String toString(){
       String anss="";
       Iterator it = answers.entrySet().iterator();
        while (it.hasNext()) {
            Map.Entry pair = (Map.Entry)it.next();
            String qa=pair.getKey() + " = " + pair.getValue()+" ";
            anss+=qa;
        }
        return anss;
   }
}
class Question{
   int point;
   int difficulty;
   int answerSpace;
   String QuestionText;
   Question(int point,int diff, int ansSpace, String text){
       this.point=point;
       difficulty=diff;
       answerSpace=ansSpace;
       QuestionText=text;
   }
   @Override
   public String toString(){
       return QuestionText+" ,point="+point+" ,difficulty="+difficulty+" ,space="+answerSpace;
   }
}
class ObjectiveQuestion extends Question{
   String correctAnswer;
   ObjectiveQuestion(int point,int diff, int ansSpace, String text, String corr){
       super(point,diff,ansSpace,text);
       correctAnswer=corr;
   }
  
  
}
class FillInTheBlankQuestion extends Question{
   String correctAnswer;
   FillInTheBlankQuestion(int point,int diff, int ansSpace, String text, String corr){
       super(point,diff,ansSpace,text);
       correctAnswer=corr;
   }
   public String toString(){
       return "__ "+QuestionText+" ,point="+point+" ,difficulty="+difficulty+" ,space="+answerSpace;
   }
}
class MultipleChoiceQuesion extends Question{
   ArrayList<String> possibleAnswers;
   String correctAnswer;
   MultipleChoiceQuesion(int point,int diff, int ansSpace, String text, String corr){
       super(point,diff,ansSpace,text);
       correctAnswer=corr;
   }
  
}

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