Qcm

Main.java

package fr.leroideskiwis.qcm;

import java.util.Scanner;

public class Main {

    private Qcm qcm;
    private Scanner scanner = new Scanner(System.in);

    public Main(){
        qcm = new Qcm(new Qcm.Question("Quel est la couleur du cheval blanc d'henri quatre ? ", new Qcm.Answer(true, "blanc"), new Qcm.Answer(false, "noir")),
                new Qcm.Question("Quel est la couleur de quelque chose", new Qcm.Answer(true,"vert"), new Qcm.Answer(false, "bleue"), new Qcm.Answer(true, "cyan"), new Qcm.Answer(true, "chiant :harold:")));

        while(qcm.has()){

            qcm.showQuestion();
            boolean correct;
            boolean isJust = false;
            do {
                try {
                    isJust = qcm.correct(readString("Votre réponse : "));
                    correct = true;
                } catch (Exception e) {
                    System.out.println("Votre réponse est incorrect ! Veuillez réessayer");
                    correct = false;
                }
            }while(!correct);

            System.out.println(isJust ? "Bonne réponse ! Bien joué :D" : "Mauvaise réponse :(");

        }

        System.out.println("Vous avez "+qcm.getTotalJust()+" réponse(s) juste(s) !");

    }

    public static void main(String[] args) {
	    new Main();
    }

    private String readString(String string){
        System.out.print(string);
        String readed = scanner.nextLine();
        System.out.println();
        return readed;
    }
}

Qcm.java

package fr.leroideskiwis.qcm;

import java.util.Arrays;

public class Qcm {

    private Question[] questions;
    private int current = 0;

    public Qcm(Question... questions) {
        this.questions = questions;
    }

    public boolean has(){
        return current < questions.length;
    }

    public boolean correct(String response) throws Exception {

        if(!isNumber(response)) throw new Exception("Need number !");

        int responseIndex = Integer.parseInt(response)-1;
        Question currentQuestion = questions[current];

        if(responseIndex < 0 || currentQuestion.answers.length < responseIndex){
            throw new IndexOutOfBoundsException();
        }

        Answer answer = currentQuestion.answers[responseIndex];

        if(current < questions.length) current++;

        currentQuestion.setJust(answer.isJust());

        return answer.isJust();
    }

    public int getTotalJust(){
        return (int)Arrays.stream(questions).filter(Question::isJust).count();
    }

    public void showQuestion(){
        System.out.println(questions[current].toString());
    }

    private boolean isNumber(String s){
        try{
            Integer.parseInt(s);
            return true;
        }catch(Exception ex){
            return false;
        }
    }

    public static class Question {
        private Answer[] answers;
        private String text;
        private boolean just;

        public Question(String text,Answer... answers) {
            this.answers = answers;
            this.text = text;
        }

        public Answer[] getAnswers() {
            return answers;
        }

        public String getText() {
            return text;
        }

        public boolean isJust() {
            return just;
        }

        @Override
        public String toString() {

            StringBuilder builder = new StringBuilder("Il y a "+answers.length+" réponses possibles : ");

            for (int i = 0; i < answers.length; i++) {
                Answer answer = answers[i];
                builder.append("\n").append(i + 1).append(". ").append(answer.getText());
            }

            return builder.toString();
        }

        public void setJust(boolean just) {
            this.just = just;
        }
    }

    public static class Answer {
        private boolean just;
        private String text;

        public Answer(boolean just, String text) {
            this.just = just;
            this.text = text;
        }

        public boolean isJust() {
            return just;
        }

        public String getText() {
            return text;
        }
    }
}

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À tester !

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