Describe how you would develop object-oriented features of Java for the Quiz program developed in the Programming Assignments. In particular, describe how the program could use each of the following: class variables, instance variables, inheritance, polymorphism, abstract classes, "this", "super", interfaces, and event listeners.
Describe how you would develop object-oriented features of Java for the Quiz program developed in the Programming Assignments. In particular, describe how the program could use each of the following: class variables, instance variables, inheritance, polymorphism, abstract classes, "this", "super", interfaces, and event listeners.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Describe how you would develop object-oriented features of Java for the Quiz program developed in the
Attached is a copy of the programming assignment.
Transcribed Image Text:}
void checko {
nQuestions++,
String answer = ask0;
if (answer.equals(coIrectAnswer) {
JOptionPane showMessageDialog(ull, "Correct!");
nCorrect++;
} else {
JOptionPane showMessageDialog(uull, "Incorrect. The correct
answer is "+correctAnswer+".");
void initQuestionDialogo {
this.question setModal (true);
this.question packO;
this.question setLocationRelativeTo(mill);
static void showResults0 {
JOptionPane showMessageDialog(mll,nCorrect+" correct out of
"+aQuestions+" questions");
File "TrueFalseQuestion.java".
import javax.swing.";
public class TrueFalseQuestion extends Question {
TrueFalseQuestion(Sring question, String answer) {
super(question);
JPanel buttons = new JPanel0;
addButton(buttons, "TRUE");
Transcribed Image Text:Unit 7 Programming Assignment Solution
The quiz questions, answers, and choices for correct answer should be unique for each
submission. Here is an exanple.
Files "QuestionDialogjava":
import java.awt.event.*;
import javax.swing.";
public class QuestionDialog extends JDialog implements ActionListener {
String answer,
public void actionPerformed(ActionEvent e) {
answer = e.getActionCommand0;
dispose);
}
File "Question.java":
import java.awt.*;
import javax.swing.":
public abstract class Question (
static int nQuestions = 0;
static int nCorrect =0;
QuestionDialog questioua;
String correctAnswer,
Question(Saring question) {
this.question = new QuestionDialogo;
this.question setLayout(new GridLayout(0,1);
this.question.add(new JLabel(" "+question=" "JLabel.CENTER));
}
String asko {
question.setVisīble(true);
retum question answer;
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