I am trying to implement Java code to create a question thats choices to choose from, but also have multiple correct answers.

This is the code;

1 package questionsapp; 3 import java.util.ArrayList; 4 6 public class AnyCorrectChoice extends AnyChoiceQuestiont private ArrayList choices; private String answer; 9 10 /kok Constructs a choice question with no choices. 12 13 14 public AnyCorrectChoice() 15 16 17 18 choices new ArrayListO; public void addChoice(String choice, boolean correct) 20 21 choices.add(choice); if (correct) // Here is where I want to implement the multiple correct answers 23 24 25 26 27 28 29 30 31 32 //But can't seem to do so. // Convert choices.size() to string String choiceString choices.sizeO; setAnswer(choiceString); public void display() // Display the question text super.display ); // Display the answer choices for (int 1= 0; 1 choices; private String answer; 9 10 /kok Constructs a choice question with no choices. 12 13 14 public AnyCorrectChoice() 15 16 17 18 choices new ArrayListO; public void addChoice(String choice, boolean correct) 20 21 choices.add(choice); if (correct) // Here is where I want to implement the multiple correct answers 23 24 25 26 27 28 29 30 31 32 //But can't seem to do so. // Convert choices.size() to string String choiceString choices.sizeO; setAnswer(choiceString); public void display() // Display the question text super.display ); // Display the answer choices for (int 1= 0; 1