回答編集履歴
3
コード修正
answer
CHANGED
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@@ -73,10 +73,11 @@
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73
73
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JPanel questionCard = new JPanel();
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74
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questionCard.add(new JLabel(question.getQuestion()));
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75
75
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76
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+
AnswerChecker answerChecker = new AnswerChecker(question);
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for(String answer: question.getAnswerList()) {
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JButton button = new JButton(answer);
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questionCard.add(button);
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79
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-
button.addActionListener(
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80
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button.addActionListener(answerChecker);
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80
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}
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cardPanel.add(questionCard);
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2
追記
answer
CHANGED
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@@ -153,4 +153,6 @@
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153
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}
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154
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}
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}
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156
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-
```
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156
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```
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157
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158
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構造は突貫ですし、命名はいい加減です。参考程度にお願いします。
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1
追記
answer
CHANGED
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@@ -5,4 +5,152 @@
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5
5
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- **配列やリストを利用すること**
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6
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それぞれの問題に対する選択肢は、`[問題数][選択肢数]`の配列で管理できます。
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7
7
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配列にすることで、似たような処理を簡潔に書くことができます。
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8
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-
また、答えも配列で管理するようにすれば、問題を追加したときも柔軟に対応できるでしょう。
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8
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また、答えも配列で管理するようにすれば、問題を追加したときも柔軟に対応できるでしょう。
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9
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+
(私の例では独自クラスの配列としています)
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10
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11
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---
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12
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+
適当ですが、作ってみました。
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13
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```Java
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14
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public class Question {
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15
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private String question;
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private String[] answerList;
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private int answerNum;
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private String comment;
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public Question(String question, String[] answerList, int answerNum, String comment) {
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this.question = question;
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this.answerList = answerList;
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this.answerNum = answerNum;
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this.comment = comment;
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}
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public String getQuestion() {
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return question;
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}
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public String[] getAnswerList() {
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return answerList;
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}
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public String getComment() {
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return comment;
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35
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}
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public boolean isCorrect(String answer) {
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38
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return answer.equals(answerList[answerNum]);
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}
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40
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}
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41
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```
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42
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43
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```Java
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44
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import javax.swing.*;
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45
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import java.awt.CardLayout;
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46
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import java.awt.BorderLayout;
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47
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import java.awt.event.*;
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48
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49
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public class Sample extends JFrame{
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50
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private int correctedNum = 0;
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51
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private int answeredNum = 0;
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52
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53
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private final Question[] questions = {
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54
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new Question("質問1", new String[]{"選択肢1", "選択肢2"}, 0, "解説1"),
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55
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new Question("質問2", new String[]{"選択肢3", "選択肢4"}, 1, "解説2"),
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56
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new Question("質問3", new String[]{"選択肢5", "選択肢6"}, 0, "解説3"),
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57
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};
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58
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public static void main(String[] args){
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60
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new Sample("タイトル");
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61
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}
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62
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63
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private Sample(String title){
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super(title);
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65
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66
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//
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67
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// CardPanel
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68
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JPanel cardPanel = new JPanel();
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CardLayout layout = new CardLayout();
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70
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cardPanel.setLayout(layout);
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71
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72
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for(Question question: questions) {
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73
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JPanel questionCard = new JPanel();
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74
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questionCard.add(new JLabel(question.getQuestion()));
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75
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76
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for(String answer: question.getAnswerList()) {
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77
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JButton button = new JButton(answer);
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78
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questionCard.add(button);
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79
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button.addActionListener(new AnswerChecker(question));
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80
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}
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81
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82
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cardPanel.add(questionCard);
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83
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}
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84
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getContentPane().add(cardPanel, BorderLayout.CENTER);
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85
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QuestionChooser questionChooser = new QuestionChooser(layout, cardPanel);
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86
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87
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//
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88
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// CtrlPanel
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89
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JPanel ctrlPanel = new JPanel();
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90
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91
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JButton prevButton = new JButton("前へ");
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92
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prevButton.addActionListener(questionChooser);
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93
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prevButton.setActionCommand("previous");
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94
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95
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JButton nextButton = new JButton("次へ");
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96
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nextButton.addActionListener(questionChooser);
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97
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nextButton.setActionCommand("next");
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98
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99
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ctrlPanel.add(prevButton);
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100
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ctrlPanel.add(nextButton);
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101
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+
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102
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//
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103
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// FrameLayout
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104
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add(ctrlPanel, BorderLayout.PAGE_END);
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105
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106
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setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
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107
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setBounds(10, 10, 300, 200);
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108
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setVisible(true);
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109
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}
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110
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+
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111
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private class QuestionChooser implements ActionListener {
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112
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private CardLayout layout;
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113
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private JPanel panel;
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114
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+
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115
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QuestionChooser(CardLayout layout, JPanel panel) {
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116
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this.layout = layout;
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117
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this.panel = panel;
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118
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}
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119
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+
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120
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public void actionPerformed(ActionEvent e) {
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121
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String cmd = e.getActionCommand();
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122
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+
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123
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if( cmd.equals("next") ) {
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124
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layout.next(panel);
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125
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}
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126
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else if( cmd.equals("previous")) {
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127
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layout.previous(panel);
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128
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}
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129
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}
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130
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}
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131
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+
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132
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private class AnswerChecker implements ActionListener {
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133
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private Question question;
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134
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+
|
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135
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AnswerChecker(Question question) {
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136
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this.question = question;
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137
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}
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138
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+
|
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139
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+
public void actionPerformed(ActionEvent e) {
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140
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++answeredNum;
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141
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+
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142
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String selectedAnswer = ((JButton)e.getSource()).getText();
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143
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if(question.isCorrect(selectedAnswer)) {
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144
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+
++correctedNum;
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145
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+
}
|
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146
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+
|
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147
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+
String comment = question.getComment() + "正答数は" + correctedNum + "/" + answeredNum + "です";
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148
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+
showMessage(comment);
|
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149
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+
}
|
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150
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+
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151
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+
private void showMessage(String str) {
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152
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+
JOptionPane.showMessageDialog(null, new JLabel(str));
|
|
153
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+
}
|
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154
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+
}
|
|
155
|
+
}
|
|
156
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+
```
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