我正在使用WindowBuilder为学校作业创建一个多项选择测试。我差不多完成了，但是我在保持分数方面遇到了麻烦。分数似乎没有加起来。我正在使用两个类来创建多项选择测试。如果有人可以帮我设置得分系统，将非常感激。 `
public class test2扩展了JFrame {
private JPanel contentPane;
JLabel labelQuestion;
Question q1;
Question q2;
Question q3;
Question q4;
Question q5;
Question q6;
Question q7;
Question q8;
Question q9;
Question q10;
Question q11;
JRadioButton rbchoice1;
JRadioButton rbchoice2;
JRadioButton rbchoice3;
JRadioButton rbchoice4;
int questionNum = 1;
int score = 0;
int selected;
// Question q1 = new Question();
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
test2 frame = new test2();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public void initializeQuestions() {
q1 = new Question();
q1.setQuestion(1, "Which statement generates a random number between 1 and 100?");
q1.setChoice(1, "number = Math.random() * 100 + 1;");
q1.setChoice(2, "number = Math.random() * 100 - 1;");
q1.setChoice(3, "number = Math.random() * 99 + 1;");
q1.setChoice(4, "number = Math.random(100);");
q1.setAnswer(1);
q2 = new Question();
q2.setQuestion(1, "Which of the following variable names is NOT valid?");
q2.setChoice(1, "pShape");
q2.setChoice(2, "ThirdClass");
q2.setChoice(3, "3rdClass");
q2.setChoice(4, "discount");
q2.setAnswer(3);
q3 = new Question();
q3.setQuestion(1, "Which of the following is one of the Java primitive types?");
q3.setChoice(1, "boolean");
q3.setChoice(2, "double");
q3.setChoice(3, "int");
q3.setChoice(4, "all of the above");
q3.setAnswer(4);
q4 = new Question();
q4.setQuestion(1, "Which of the following is not a primitive data type?");
q4.setChoice(1, "float");
q4.setChoice(2, "double");
q4.setChoice(3, "char");
q4.setChoice(4, "String");
q4.setAnswer(4);
q5 = new Question();
q5.setQuestion(1, "Which statement must be included to use Math.PI in your program?");
q5.setChoice(1, "import java.lang.*;");
q5.setChoice(2, "import java.util.*;");
q5.setChoice(3, "public class Math");
q5.setChoice(4, "public static void main()");
q5.setAnswer(1);
q6 = new Question();
q6.setQuestion(1, "Which statement will increment total by 1?");
q6.setChoice(1, "total = 1;");
q6.setChoice(2, "total++;");
q6.setChoice(3, "total--;");
q6.setChoice(4, "total += total;");
q6.setAnswer(2);
q7 = new Question();
q7.setQuestion(1, "The statement x += 2; is equivalent to?");
q7.setChoice(1, "x = x + 2;");
q7.setChoice(2, "x = x + 1 = x + 1;");
q7.setChoice(3, "++x;");
q7.setChoice(4, "x++;");
q7.setAnswer(1);
q8 = new Question();
q8.setQuestion(1, "In a switch statement what must come after every case?");
q8.setChoice(1, "switch");
q8.setChoice(2, "break");
q8.setChoice(3, "default");
q8.setChoice(4, "cout");
q8.setAnswer(2);
q9 = new Question();
q9.setQuestion(1, "Which of the following for headers is not valid?");
q9.setChoice(1, "for ( int i = 0; i < 10; i++ )");
q9.setChoice(2, "int i = 0; for ( ; i < 10; i++ )");
q9.setChoice(3, "for ( int i = 0; int j = 5; ; i++ )");
q9.setChoice(4, "All of the above");
q9.setAnswer(3);
q10 = new Question();
q10.setQuestion(1, "An array is not:");
q10.setChoice(1, "a consecutive group of memory locations.");
q10.setChoice(2, "subscripted by integers.");
q10.setChoice(3, "declared using braces, [].");
q10.setChoice(4, "made up of different data types.");
q10.setAnswer(4);
q10 = new Question();
q10.setQuestion(1, "Your score is: " + score + "/10");
q10.setChoice(1, "");
q10.setChoice(2, "");
q10.setChoice(3, "");
q10.setChoice(4, "");
q10.setAnswer(4);
}
/**
* place the question data in the JLabel and RadioButtons
*/
/**
* Create the frame.
*/
public test2() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
JLabel lblJavaQuestionsMultiple = new JLabel(" Java Multiple Choice Test!");
lblJavaQuestionsMultiple.setBounds(138, 11, 192, 14);
contentPane.add(lblJavaQuestionsMultiple);
labelQuestion = new JLabel("");
labelQuestion.setToolTipText("question");
labelQuestion.setBounds(10, 57, 419, 14);
contentPane.add(labelQuestion);
rbchoice1 = new JRadioButton("");
rbchoice1.setBounds(111, 77, 275, 21);
contentPane.add(rbchoice1);
rbchoice2 = new JRadioButton("");
rbchoice2.setBounds(111, 104, 275, 21);
contentPane.add(rbchoice2);
rbchoice3 = new JRadioButton("");
rbchoice3.setBounds(111, 131, 275, 21);
contentPane.add(rbchoice3);
rbchoice4 = new JRadioButton("");
rbchoice4.setBounds(111, 158, 275, 21);
contentPane.add(rbchoice4);
// rbchoiceD.isSelected()
ButtonGroup group = new ButtonGroup();
group.add(rbchoice1);
group.add(rbchoice2);
group.add(rbchoice3);
group.add(rbchoice4);
JButton btnNext = new JButton("Next");
btnNext.setBounds(336, 235, 93, 23);
btnNext.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
// nextQuestion( ??? );
if (rbchoice1.isSelected()) {
selected = 1;
} else if (rbchoice2.isSelected()) {
selected = 2;
} else if (rbchoice3.isSelected()) {
selected = 3;
} else if (rbchoice4.isSelected()) {
selected = 5;
}
if (questionNum == 1 && selected == 1) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 2 && selected == 3) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 3 && selected == 4) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 4 && selected == 4) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 5 && selected == 1) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 6 && selected == 2) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 7 && selected == 1) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 8 && selected == 2) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 9 && selected == 3) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else if (questionNum == 10 && selected == 4) {
JOptionPane.showMessageDialog(null, "Correct");
score++;
} else {
JOptionPane.showMessageDialog(null, "Incorrect");
}
if (questionNum == 1) {
nextQuestion(q2);
group.clearSelection();
questionNum++;
} else if (questionNum == 2) {
nextQuestion(q3);
group.clearSelection();
questionNum++;
} else if (questionNum == 3) {
nextQuestion(q4);
group.clearSelection();
questionNum++;
} else if (questionNum == 4) {
nextQuestion(q5);
group.clearSelection();
questionNum++;
} else if (questionNum == 5) {
nextQuestion(q6);
group.clearSelection();
questionNum++;
} else if (questionNum == 6) {
nextQuestion(q7);
group.clearSelection();
questionNum++;
} else if (questionNum == 7) {
nextQuestion(q8);
group.clearSelection();
questionNum++;
} else if (questionNum == 8) {
nextQuestion(q9);
group.clearSelection();
questionNum++;
} else if (questionNum == 9) {
nextQuestion(q10);
group.clearSelection();
questionNum++;
} else if (questionNum == 10)
nextQuestion(q11);
group.clearSelection();
}
});
contentPane.add(btnNext);
JLabel scoreLabel = new JLabel("");
scoreLabel.setBounds(201, 208, 46, 14);
contentPane.add(scoreLabel);
initializeQuestions();
nextQuestion(q1);
}
public void nextQuestion(Question q) {
// labelQuestion.setText( q.getQuestion() );
labelQuestion.setText(q.getQuestion(1));
rbchoice1.setText(q.getChoice(1));
rbchoice2.setText(q.getChoice(2));
rbchoice3.setText(q.getChoice(3));
rbchoice4.setText(q.getChoice(4));
}
}
公共课问题{
private String question;
private String choiceA;
private String choiceB;
private String choiceC;
private String choiceD;
private String question1;
private String question2;
private String question3;
private String question4;
private String question5;
private String question6;
private String question7;
private String question8;
private String question9;
private String question10;
private String answer2;
private int answer;
private int userChoice;
private int selected;
JRadioButton rbchoice1;
JRadioButton rbchoice2;
JRadioButton rbchoice3;
JRadioButton rbchoice4;
public Question(){
question = "";
}
public void setQuestion(String q) {
question = q;
}
public void setChoice(int c1, String cA) {
if (c1 == 1) {
choiceA = cA;
}
if (c1 == 2) {
choiceB = cA;
}
if (c1 == 3) {
choiceC = cA;
}
if (c1 == 4) {
choiceD = cA;}
}
public void setQuestion(int c1, String q1) {
if (c1 == 1) {
question1 = q1;
}
if (c1 == 2) {
question2 = q1;
}
if (c1 == 3) {
question3 = q1;
}
if (c1 == 4) {
question4 = q1;
}
if (c1 == 5) {
question5 = q1;
}
if (c1 == 6) {
question6 = q1;
}
if (c1 == 7) {
question7 = q1;
}
if (c1 == 8) {
question8 = q1;
}
if (c1 == 9) {
question9 = q1;
}
if (c1 == 10) {
question10 = q1;
}
}
public void setAnswer(int a) {
answer = a;
}
public void displayQuestion() {
System.out.println(question);
System.out.println("1. " + choiceA);
System.out.println("2. " + choiceB);
System.out.println("3. " + choiceC);
System.out.println("4. " + choiceD);
}
public void getAnswer(int a) {
answer = a;
if (a == 1) {
System.out.println("Incorrect!");
} else if (a == 2) {
System.out.println("Correct!");
}
else if (a == 3) {
System.out.println("Incorrect!");
}
else if (a == 4) {
System.out.println("Incorrect!");
} else {
System.out.println("Please write a number between 1-4!");
}
}
public String getChoice(int c1) {
if (c1 == 1) {
return choiceA;
}
if (c1 == 2) {
return choiceB;
}
if (c1 == 3) {
return choiceC; }
if (c1 == 4) {
return choiceD;
}
return "error";
}
public String getQuestion(int q1) {
if (q1 == 1) {
return question1;
}
if (q1 == 2) {
return question2;
}
if (q1 == 3) {
return question3; }
if (q1 == 4) {
return question4;
}
if (q1 == 5) {
return question5;
}
if (q1 == 6) {
return question6;
}
if (q1 == 7) {
return question7;
}
if (q1 == 8) {
return question8;
}
if (q1 == 9) {
return question9;
}
if (q1 == 10) {
return question10;
}
return "error";
}
public int getUserAnswer(int selected){
if(rbchoice1.isSelected()){
selected = 1;
}
else if(rbchoice2.isSelected()){
selected = 2;
}
else if(rbchoice3.isSelected()){
selected = 3;
}
else if(rbchoice4.isSelected()){
selected = 5;
}
return selected;
}
public void displayEnd(int score){
}
} `
答案 0 :(得分：2)
你真的应该考虑使用某种Collection来存储你的问题，而不是每个都有一个变量。
然后我想知道为什么你的问题文本有一个索引。每个问题只有一个，整个软件似乎不可调整，以支持将来不止一个。
为什么您的Question类为每个问题都有一个变量，但是你在initializeQuestions（）方法中创建了10个实例？
在actionPerformed（）方法中，选择第4个按钮时设置selected = 5。这也可能是你的计数在最后都不正确的原因。
您还应该通过移动来限制一些冗余
group.clearSelection();
questionNum++;
到nextQuestion（）方法
你的actionPerformed方法不应该＆＃34;知道＆＃34;关于每个问题的正确答案是什么。此信息已在问题类中提供，应从那里检索。
答案 1 :(得分：0)
有一些错误..
首先你有两个q10 = new Question();，一个应该是
q11 = new Question();
q11.setQuestion(1, "Your score is: " + score + "/10");
q11.setChoice(1, "");
q11.setChoice(2, "");
q11.setChoice(3, "");
q11.setChoice(4, "");
q11.setAnswer(4);
然后，您应该在initializeQuestions();的最后一部分致电else if(questionNum)，如下所示
else if (questionNum == 10) {
System.out.println(score);
initializeQuestions();
nextQuestion(q11);
}