Question

PLEASE Use the ECLIPSE...

AND FOLLOW THIS RULES..

Apply the naming conventions for variables, methods, classes, and packages:

- variable names start with a lowercase character

- classes start with an uppercase character

- packages use only lowercase characters

methods start with a lowercase character

Write a Java application that simulates a test. The test contains at least five questions about first three lectures of this course. Each question should be a multiple-choice question with 4 options.

Design a Test class. Use programmer-defined methods to implement your solution. For example:

• create a method to simulate the questions – simulateQuestion
• create a method to check the answer – checkAnswer
• create a method to display a random message for the user – generateMessage
• create a method to interact with the user - inputAnswer

For each question:

• If the user finds the right answer, display a random congratulatory message (“Excellent!”,”Good!”,”Keep up the good work!”, or “Nice work!”).
• If the user responds incorrectly, display an appropriate message and the correct answer (“No. Please try again”, “Wrong. Try once more”, “Don't give up!”, “No. Keep trying..”).
• Use random-number generation to choose a number from 1 to 4 that will be used to select an appropriate response to each answer.
• Use a switch statement to issue the responses, as in the following code:

switch ( randomObject.nextInt( 4 ) )

{

case 0:

return( "Very good!" );

……

}

At the end of the test display the number of correct and incorrect answers, and the percentage of the correct answers.

Your main class will simply create a Test object and start the test by calling input answer method.

Thank you.

Answer 1

Thanks for the question. Below is the code you will be needing. Let me know if you have any doubts or if you need anything to change. 

If you are satisfied with the solution, please leave a +ve feedback : ) Let me know for any help with any other questions.

Thank You!

Note: Please change the questions based on you lecture classes. Run the Tester.java class.
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import java.util.Random;
import java.util.Scanner;

public class Test {

    private String question;
    private String optionA;
    private String optionB;
    private String optionC;
    private String optionD;
    private String correctAnswer;
    private String userAnswer;

    private static Scanner scanner = new Scanner(System.in);
    private static Random random = new Random();

    public Test(String question, String optionA, String optionB, String optionC, String optionD, String correctAnswer) {
        this.question = question;
        this.optionA = optionA;
        this.optionB = optionB;
        this.optionC = optionC;
        this.optionD = optionD;
        this.correctAnswer = correctAnswer;
    }

    public void simulateQuestion(){

        System.out.println( question);
        System.out.println("Option 1: "+ optionA );
        System.out.println("Option 2: "+ optionB );
        System.out.println("Option 3: "+ optionC );
        System.out.println("Option 4: "+ optionD );

    }

    public void inputAnswer(){
        System.out.println("Enter the correct answer? ");
        userAnswer = scanner.nextLine();

    }

    public boolean checkAnswer(){
        return (userAnswer.equalsIgnoreCase(correctAnswer));

    }

    public void generateMessage(){

        if(checkAnswer()){
            switch (random.nextInt(4)){
                case 0:System.out.println("Excellent");break;
                case 1:System.out.println("Good!");break;
                case 2:System.out.println("Keep up the good work!");break;
                case 3:System.out.println("Nice work!");break;
            }
        }else{
            switch (random.nextInt(4)){
                case 0:System.out.println("No, Please try again");break;
                case 1:System.out.println("Wrong! Try once more.");break;
                case 2:System.out.println("Don't give up!");break;
                case 3:System.out.println("No keep trying!");break;
            }
        }

    }
}

==================================================================

public class Tester{


    public static void main(String[] args) {

        Test [] tests = new Test[5];
        // chnage the question set here based on the three lectures of this course
        tests[0] = new Test("How much is 2+2?","2","3","4","5","4");
        tests[1] = new Test("How much is 12/2?","2","6","10","12","6");
        tests[2] = new Test("How much is 20-2?","18","22","10","0","18");
        tests[3] = new Test("How much is 22+2?","44","24","42","20","24");
        tests[4] = new Test("How much is 2+222?","222","220","226","224","224");

        int corrects =0, wrongs = 0;
        for(int i=0; i<tests.length;i++){
            System.out.println("Question #"+(i+1)+"\n");
            tests[i].simulateQuestion();
            tests[i].inputAnswer();
            tests[i].generateMessage();
            if(tests[i].checkAnswer())corrects+=1;
            else wrongs+=1;
            System.out.println();
        }

        System.out.printf("\nTotal Correct Answers : %2d (%5.2f)%%\n",corrects,(corrects*100.0/tests.length));
        System.out.printf("Total Wrong Answers   : %2d (%5.2f)%%\n",wrongs,(wrongs*100.0/tests.length));

    }
}

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