QuizCardGame

news/2024/9/23 6:25:24/

文章目录

  • 前言
  • 一、QuizCard
  • 二、QuizCardBuilder
  • 三、QuizCardPlayer

前言

《Head First Java》QuizCard示例代码

一、QuizCard

/*** Title      : QuizCard.java* Description: This class contains the definition of the QuizCard.** @author    : Zhonghao Yan* @version   : 18/05/2022*/public class QuizCard {private String question;private String answer;QuizCard(String question, String answer) {this.question = question;this.answer = answer;}//    public void setQuestion(String question) { this.question = question; }
//    public void setAnswer(String answer) { this.answer = answer; }public String getQuestion() {return question;}public String getAnswer() {return answer;}
}

二、QuizCardBuilder

import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.io.*;/*** Title      : QuizCardBuilder.java* Description: This class contains the definition of the QuizCardBuilder*              which can design and store the card.** @author    : Zhonghao Yan* @version   : 18/05/2022*/public class QuizCardBuilder {private JTextArea question;private JTextArea answer;private ArrayList<QuizCard> cardList;public JFrame frame;public static void main(String[] args) {QuizCardBuilder builder = new QuizCardBuilder();builder.go();}/***  Run the builder to create and store quiz card*/public void go() {frame = new JFrame("Quiz Card Builder");JPanel mainPanel = new JPanel();Font bigFont = new Font("sanserif", Font.BOLD, 24);question = new JTextArea(6, 20);question.setLineWrap(true); // 自动换行question.setWrapStyleWord(true);question.setFont(bigFont);JScrollPane qScroller = new JScrollPane(question);qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);answer = new JTextArea(6, 20);answer.setLineWrap(true); // 自动换行answer.setWrapStyleWord(true);answer.setFont(bigFont);JScrollPane aScroller = new JScrollPane(answer);aScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);aScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);JButton nextBUtton = new JButton("Next Card");cardList = new ArrayList<>();JLabel qLabel = new JLabel("Question:");JLabel aLabel = new JLabel("Answer:");/*创建菜单，把new与save项目驾到File下，然后指定frame使用这个菜单，菜单项目会触发ActionEvent*/mainPanel.add(qLabel);mainPanel.add(qScroller);mainPanel.add(aLabel);mainPanel.add(aScroller);nextBUtton.addActionListener(new NextCardListener());JMenuBar menuBar = new JMenuBar();JMenu fileMenu = new JMenu("File");JMenuItem newMenuItem = new JMenuItem("New");JMenuItem saveMenuItem = new JMenuItem("Save");newMenuItem.addActionListener(new NewMenuListener());saveMenuItem.addActionListener(new SaveMenuListener());fileMenu.add(newMenuItem);fileMenu.add(saveMenuItem);menuBar.add(fileMenu);frame.setJMenuBar(menuBar);frame.getContentPane().add(BorderLayout.CENTER, mainPanel);frame.setSize(500, 600);frame.setVisible(true);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}/*** Monitor the action when we create next quiz card*/public class NextCardListener implements ActionListener {public void actionPerformed(ActionEvent event) {QuizCard card = new QuizCard(question.getText(), answer.getText());cardList.add(card);clearCard();}}/*** Monitor the action when we save the quiz card we have created*/public class SaveMenuListener implements ActionListener {public void actionPerformed(ActionEvent event) {QuizCard card = new QuizCard(question.getText(), answer.getText());cardList.add(card);/*showSaveDialog(Component parent)显示保存文件的对话框参数parent: 文件选取器对话框的父组件, 对话框将会尽量显示在靠近 parent 的中心; 如果传 null, 则显示在屏幕中心。File getSelectedFile()返回一个File对象，获取选择的文件*/JFileChooser fillSave = new JFileChooser();fillSave.showSaveDialog(frame);saveFile(fillSave.getSelectedFile());}}/*** Monitor the action when we create new file*/public class NewMenuListener implements ActionListener {public void actionPerformed(ActionEvent event) {cardList.clear();clearCard();}}/*** Clear the JTextArea to wait next input*/private void clearCard() {question.setText("");answer.setText("");question.requestFocus();}/*** Save the data of the quiz card* @param file The object of File we choose in the dialog*/private void saveFile(File file) {try {/*将BufferWriter链接到FileWriter效率会更高，先在缓存区暂存一些内容，等缓存区满了后一并写入如果需要强制缓存区立即写入，调用flush()方法即可*/BufferedWriter writer = new BufferedWriter(new FileWriter((file)));for (QuizCard card : cardList) {// 将ArrayList中的卡片逐个写到文件中，一行一张卡片writer.write(card.getQuestion() + "/");writer.write(card.getAnswer() + "\n");}writer.close();} catch (IOException ex) {System.out.println("couldn't write the cardList out");ex.printStackTrace();}}}

三、QuizCardPlayer

import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
import java.io.*;/*** Title      : QuizCardPlayer.java* Description: This class contains the definition of the QuizCardPlayer*              which can let users play the game.** @author    : Zhonghao Yan* @version   : 18/05/2022*/public class QuizCardPlayer {private JTextArea display;private JTextArea answer;private ArrayList<QuizCard> cardList;private QuizCard currentCard;private int currentCardIndex;private JFrame frame;private JButton nextButton;private boolean isShowAnswer;public static void main(String[] args) {QuizCardPlayer reader = new QuizCardPlayer();reader.go();}private void go() {frame = new JFrame("Quiz Card Player");JPanel mainPanel = new JPanel();Font bigFont = new Font("sanserif", Font.BOLD, 24);display = new JTextArea(10, 20);display.setFont(bigFont);display.setLineWrap(true);display.setEditable(false); // 禁止编辑JScrollPane qScroller = new JScrollPane(display);qScroller.setVerticalScrollBarPolicy(ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS);qScroller.setHorizontalScrollBarPolicy(ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);nextButton = new JButton("Show Question");mainPanel.add(qScroller);mainPanel.add(nextButton);JMenuBar menuBar = new JMenuBar();JMenu fileMenu = new JMenu("File");JMenuItem loadMenuItem = new JMenuItem("Load card set");loadMenuItem.addActionListener(new OpenMenuListener());fileMenu.add(loadMenuItem);menuBar.add(fileMenu);frame.setJMenuBar(menuBar);frame.getContentPane().add(BorderLayout.CENTER, mainPanel);frame.setSize(640, 500);frame.setVisible(true);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);}/*** Monitor the action when we click the next button*/public class NextCardListener implements ActionListener {public void actionPerformed(ActionEvent ev) {if (isShowAnswer) {// 显示答案display.setText(currentCard.getAnswer());nextButton.setText("Next Card");isShowAnswer = false;} else {if (currentCardIndex < cardList.size()) {showNextCard();} else {// 没有更多的卡片了display.setText("That is the last card");nextButton.setEnabled(false); // 禁用按钮}}}}/*** Monitor the action when we click menu*/public class OpenMenuListener implements ActionListener {public void actionPerformed(ActionEvent ev) {JFileChooser fileOpen = new JFileChooser();fileOpen.showSaveDialog(frame);loadFile(fileOpen.getSelectedFile());}}/*** Read the file, and split the String of line to make card* @param file The object of File we choose in the dialog*/public void loadFile(File file) {cardList = new ArrayList<>();try {BufferedReader reader = new BufferedReader(new FileReader(file));String line = null;while ((line = reader.readLine()) != null) {// 读取一行数据，传给makeCard()，将字符串解析成卡片makeCard(line);}reader.close();} catch (Exception ex ) {System.out.println("Couldn't read the card file");ex.printStackTrace();}}/*** Split the String of the line to question and answer* @param lineToParse One line of the file.*/private void makeCard(String lineToParse) {String[] result = lineToParse.split("/");QuizCard card  = new QuizCard(result[0], result[1]);cardList.add(card);System.out.println("made a card");}public void showNextCard() {currentCard = cardList.get(currentCardIndex);currentCardIndex++;display.setText(currentCard.getQuestion());nextButton.setText("Show Answer");isShowAnswer = true;}}

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