1 import java.util.ArrayList;
2
3 /**
4 A question with multiple choices.
5 */
6 public class ChoiceQuestion extends Question
7 {
8 private ArrayList<String> choices;
9
10 /**
11 Constructs a choice question with no choices.
12 */
13 public ChoiceQuestion()
14 {
15 choices = new ArrayList<String>();
16 }
17
18 /**
19 Adds an answer choice to this question.
20 @param choice the choice to add
21 @param correct true if this is the correct choice, false otherwise
22 */
23 public void addChoice(String choice, boolean correct)
24 {
25 choices.add(choice);
26 if (correct)
27 {
28 // Convert choices.size() to string
29 String choiceString = "" + choices.size();
30 setAnswer(choiceString);
31 }
32 }
33
34 public void display()
35 {
36 // Display the question text
37 super.display();
38 // Display the answer choices
39 for (int i = 0; i < choices.size(); i++)
40 {
41 int choiceNumber = i + 1;
42 System.out.println(choiceNumber + ": " + choices.get(i));
43 }
44 }
45 }
46