Question

In Java, write JUnit tests to verify various question-type objects for the following below:

public interface IAnswer {

   public String getAnswer();

   }

import java.util.Scanner;

YesNo class:

public class YesNo implements IAnswer{

           private String question;

           public YesNo(String q){

               this.question = q;

           }
          
           //This function returns question text
           public String getQuestionText() {
               return question;
           }
          
           //This function takes answer from user
           public void answer(String userAnswer) {
               // Take care of answer
           }

           @Override

           public String getAnswer() {

               System.out.println(question);

               Scanner scan = new Scanner(System.in);

               String ans =scan.nextLine();

               System.out.print("Answer: ");

               scan.close();

               if(ans.equalsIgnoreCase("yes") || ans.equalsIgnoreCase("no")){

                   return ans;

               }else{

                   return "Invalid Answer";

               }

}

}

Essay class:

import java.util.Scanner;

public class Essay implements IAnswer{

private String question;

public Essay(String q){

this.question = q;

}

//This function returns question text
public String getQuestionText() {
   return question;
}

//This function takes answer from user
public void answer(String userAnswer) {
   // Take care of answer
}

@Override

public String getAnswer() {

System.out.println(question);

Scanner scan = new Scanner(System.in);

System.out.print("Answer: ");

String ans =scan.nextLine();

scan.close();

if(ans.length() <=140){

return ans;

}else{

return "Invalid Answer";

}

}

}

Likert class:

import java.util.Scanner;

public class Likert implements IAnswer {

   private String question;

   public Likert(String q) {

       this.question = q;

   }
  
   //This function returns question text
   public String getQuestionText() {
       return question;
   }
  
   //This function takes answer from user
   public void answer(String userAnswer) {
       // Take care of answer
   }

   @Override

   public String getAnswer() {

       System.out.println(question);

       Scanner scan = new Scanner(System.in);

       System.out.print("Answer: ");

       String ans = scan.nextLine();

       scan.close();

       if (ans.equalsIgnoreCase("Strongly Agree")

               || ans.equalsIgnoreCase("Agree")

               || ans.equalsIgnoreCase("Neither Agree nor Disagree")

               || ans.equalsIgnoreCase("Disagree")

               || ans.equalsIgnoreCase("Strongly Disagree")) {

           return ans;

       } else {

           return "Invalid Answer";

       }

   }

}

Answer 1

public interface IAnswer {

public String getAnswer();

}

import java.util.Scanner;

YesNo class:

public class YesNo implements IAnswer{

private String question;

public YesNo(String q){

this.question = q;

}

//This function returns question text
public String getQuestionText() {
return question;
}

//This function takes answer from user
public void answer(String userAnswer) {
// Take care of answer
}

@Override

public String getAnswer() {

System.out.println(question);

Scanner scan = new Scanner(System.in);

String ans =scan.nextLine();

System.out.print("Answer: ");

scan.close();

if(ans.equalsIgnoreCase("yes") || ans.equalsIgnoreCase("no")){

return ans;

}else{

return "Invalid Answer";

}

}

}

Essay class:

import java.util.Scanner;

public class Essay implements IAnswer{

private String question;

public Essay(String q){

this.question = q;

}

//This function returns question text
public String getQuestionText() {
return question;
}

//This function takes answer from user
public void answer(String userAnswer) {
// Take care of answer
}

@Override

public String getAnswer() {

System.out.println(question);

Scanner scan = new Scanner(System.in);

System.out.print("Answer: ");

String ans =scan.nextLine();

scan.close();

if(ans.length() <=140){

return ans;

}else{

return "Invalid Answer";

}

}

}

Likert class:

import java.util.Scanner;

public class Likert implements IAnswer {

private String question;

public Likert(String q) {

this.question = q;

}

//This function returns question text
public String getQuestionText() {
return question;
}

//This function takes answer from user
public void answer(String userAnswer) {
// Take care of answer
}

@Override

public String getAnswer() {

System.out.println(question);

Scanner scan = new Scanner(System.in);

System.out.print("Answer: ");

String ans = scan.nextLine();

scan.close();

if (ans.equalsIgnoreCase("Strongly Agree")

|| ans.equalsIgnoreCase("Agree")

|| ans.equalsIgnoreCase("Neither Agree nor Disagree")

|| ans.equalsIgnoreCase("Disagree")

|| ans.equalsIgnoreCase("Strongly Disagree")) {

return ans;

} else {

return "Invalid Answer";

}

}

}

Main class:

public class Main {

public static void main(String[] args) {

YesNo yesno = new YesNo("Do you like coffeee?");

System.out.println(yesno.getAnswer());

}

}