Java 测验 - 正确时不接受用户输入

Question

    private void startGame() {
        System.out.println("Exercises must be completed as quickly as possible.");
        System.out.println("You have to solve 3 exercises.");
        System.out.println("Be as fast as you can!\n");

        Instant startTime = Instant.now();

        for (int i = 0; i < 3; i++) {
            Exercise exercise = Exercise.getRandomExercise();
            System.out.print(exercise);
            int guess = Integer.parseInt(scanner.nextLine());
            exercise.solve(guess);
            if (!exercise.solve(guess)) {
                System.out.println("\nYou have made a mistake.");
                System.out.println("More luck next time.\n");
                return;
            }
        }
        System.out.println();

        Instant endTime = Instant.now();
        Duration timeElapsed = Duration.between(startTime, endTime);
        double seconds = timeElapsed.toMillis() / 1000.0;

        Record record = new Record(seconds);
        System.out.println("You needed " + seconds + " seconds.");
        if (recordList.add(record)) {
            System.out.println("You have set a new record!");
            System.out.print("Your name: ");
            record.setName(scanner.nextLine());
        }
        System.out.println();
    }


}



import java.util.Random;

class Exercise {
    private String question;
    private String solution;

    private Exercise(String question, String solution) {
        this.question = question;
        this.solution = solution;
    }


    public static Exercise getRandomExercise() {

        records s1 = new records();
        records s2 = new records();
        records s3 = new records();

        // RECORDS OF QUESTIONS
        s1 = setQuestion(s1, "What is the largest bone in the human body? \n Choose 1 for Femur \n Choose 2 for Tibia \n Choose 3 for Palatine Bone \n Choose 4 for Tongue \n");
        s2 = setQuestion(s2, "What is the capital of Albania? \n Choose 1 for Shkoder \n Choose 2 for Tirana \n Choose 3 for Durres \n Choose 4 for Rome \n");
        s3 = setQuestion(s3, "The beaver is the national emblem of which country? \n Choose 1 for England \n Choose 2 for America \n Choose 3 for Canada \n Choose 4 for Texas \n");

        // RECORDS OF ANSWERS
        s1 = setCorrectAnswer(s1, 1);
        s2 = setCorrectAnswer(s2, 2);
        s3 = setCorrectAnswer(s3, 3);

        // ARRAY CONTAINING THE QUESTION WITH THE CORRESPONDING CORRECT ANSWER
        String[][] questions = {
                {getQuestion(s1), getCorrectAnswer(s1)},
                {getQuestion(s2), getCorrectAnswer(s2)},
                {getQuestion(s3), getCorrectAnswer(s3)}};


        Random random = new Random();
        int index = random.nextInt(5);
        String question;
        String solution;

        if (index == 0) {
            System.out.println(questions[0][0]);
            question = questions[0][0];
            solution = questions[0][1];

        } else if (index == 1) {
            System.out.println(questions[1][0]);
            question = questions[1][0];
            solution = questions[1][1];

        } else {
            System.out.println(questions[2][0]);
            question = questions[2][0];
            solution = questions[2][1];
        }
        return new Exercise(question, solution);
    }

    public boolean solve(int guess) {
        return solution.equals(guess);
    }


    private static String getQuestion(records s) {
        return s.question;
    }

    public static String getCorrectAnswer(records s) {
        return String.valueOf(s.correctanswer);
    }


    // SETTER METHODS
    public static records setQuestion(records s, String question) {
        s.question = question;
        return s;
    }

    public static records setCorrectAnswer(records s, int correctanswer) {
        s.correctanswer = correctanswer;
        return s;
    }



}

我创建了一个数组，其中包含包含问题和相应正确答案的记录。运行以下代码时，如果用户输入正确的答案，则视为用户输入了错误的答案。我希望程序能够看到用户已正确输入答案

非常感谢

Answer 1

您在Exercise 的solve 方法中比较了String 和Integer。这永远不会返回 true，因为两个对象的类型不同