Question

▪ ▪

using java

Create a FOR loop to go over all the questions, one by one.
For each question:
o Create a String variable and concatenate the questions and the multiple choices.
o To have new lines as shown in the figure above, concatenate “\n” after each possible answer in the multiple

choice.

• Collect the answer from the JOptionPane dialog box (you will need to convert the returning value from String to integer).

• ▪ Compare this value with the actual correct answer that you got from the text file (the integer array of correct answers that you have created.

• ▪ Create an integer variable to keep track of how many answers were correct.

o Use this concatenated string as input in your JOptionPane.showInputDialog() method.

Answer 1

/**
* Java program that display a questions and prompts user
* to enter the user response and then find the number of
* correct answers .Then display the number of correct answers
* in a message dialog box.
* */
//MultipleChoice.java
import java.io.File;
import java.util.Scanner;
import javax.swing.JOptionPane;
public class MultipleChoice
{
   public static void main(String[] args)
   {
      
       int correct=0;
       //questions
       String q1="What is capital of USA?\n1.Washington\n2.NewYork\n3.Texas";
       String q2="What is capital of INDIA?\n1.Hyderabad\n2.New Delhi\n3.Mubmbai";
       String q3="What is capital of SriLanka?\n1.Columbo\n2.China\n3.koria";
      
       //create an array of questions
       String questions[]= {q1,q2,q3};
      
       final int size=3;
       //an array of integer data type
       int[]answers=new int[size];
      
       String fileName="answers.txt";
       Scanner filereader=null;
       int index=0;
      
       try
       {
           //open file for reading
           filereader=new Scanner(new File(fileName));
           while(filereader.hasNext())
           {
               //read answers from file
               answers[index]=Integer.parseInt(filereader.next());
               index++;
           }
           filereader.close();
       }
       catch (Exception e) {
           System.out.println(e.getMessage());
       }
       int user_response;
       for (int i = 0; i < answers.length; i++)
       {
           //prompt for the user response
           user_response=Integer.parseInt(JOptionPane.showInputDialog(null, questions[i]));
           //check if answer is correct
           if(user_response==answers[i])
               correct++;
       }
       //show number of correct answers count
       JOptionPane.showMessageDialog(null,"The number of correct answers are "+correct);
      
   }
}
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answers.txt

1 2 1

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Sample Output: