Question.java

import java.util.*;
public class Question{
    
    private String questionText;
    private List<String> choices;
    private String answer;
    
        public Question(String questionText, List<String> choices, String answer) {
                if (questionText == null || questionText.isEmpty()) {
                        System.out.println("Question text cannot be null or empty!");
                } else if (choices == null || choices.isEmpty()) {
                        System.out.println("Choices cannot be null or empty!");
                } else if (answer == null || answer.isEmpty()) {
                        System.out.println("Answer cannot be null or empty!");
                } else if (!choices.contains(answer)) {
                        System.out.println("Answer is not present among the choices!");
                } else {
                        this.questionText = questionText;
                        this.choices = choices;
                        this.answer = answer;
                }
                }               


public String getAnswer() {
        return answer;
}
        
public String getQuestionText() {
        return questionText;
}
        
public boolean checkAnswer(String answer) {
        return this.answer.equals(answer);
}
        
public List<String> getChoices() {
        return choices;
}

public void display(){
    System.out.println(getQuestionText());
    for(int i = 0; i < choices.size(); i++){
        int choiceNumber = i + 1;
        System.out.println(choiceNumber + ":" + choices.get(i));
    }
}

}