使用Java编写在线考试系统的自动计分功能

// 定义题目类
class Question {
    private String content;       // 题目内容
    private String answer;        // 标准答案
    private int weight;           // 题目权重
    
    // 构造函数
    public Question(String content, String answer, int weight) {
        this.content = content;
        this.answer = answer;
        this.weight = weight;
    }
    
    // 计算得分
    public int calculateScore(String userAnswer) {
        // 比较考生的答案和标准答案
        if (userAnswer.equals(answer)) {
            // 返回题目的权重作为得分
            return weight;
        } else {
            // 返回0分
            return 0;
        }
    }
}

public class OnlineExam {
    public static void main(String[] args) {
        // 创建选择题对象
        Question question1 = new Question("1 + 1 = ?", "2", 1);
        
        // 创建填空题对象
        Question question2 = new Question("中国的首都是______", "北京", 2);
        
        // 创建简答题对象
        Question question3 = new Question("简述Java编程语言的特点", "Java是一种面向对象的编程语言，具有平台无关性、安全性等特点", 3);
        
        // 假设考生的答案分别为"2", "上海", "Java是一种编程语言"
        String userAnswer1 = "2";
        String userAnswer2 = "上海";
        String userAnswer3 = "Java是一种编程语言";
        
        // 计算得分
        int score1 = question1.calculateScore(userAnswer1);
        int score2 = question2.calculateScore(userAnswer2);
        int score3 = question3.calculateScore(userAnswer3);
        
        // 输出得分
        System.out.println("选择题得分：" + score1);
        System.out.println("填空题得分：" + score2);
        System.out.println("简答题得分：" + score3);
    }
}