Menggunakan Java untuk membina modul pengurusan maklumat pelajar sistem peperiksaan dalam talian

public class Student {
    private String id;
    private String name;
    private int age;

    // 构造方法
    public Student(String id, String name, int age) {
        this.id = id;
        this.name = name;
        this.age = age;
    }

    // Getter和Setter方法
    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

import java.util.ArrayList;
import java.util.List;

public class StudentManager {
    private List<Student> students;

    public StudentManager() {
        students = new ArrayList<>();
    }

    // 添加学生信息
    public void addStudent(Student student) {
        students.add(student);
    }

    // 查询学生信息
    public Student getStudentById(String id) {
        for (Student student : students) {
            if (student.getId().equals(id)) {
                return student;
            }
        }
        return null;
    }

    // 修改学生信息
    public void updateStudent(Student student) {
        for (int i = 0; i < students.size(); i++) {
            if (students.get(i).getId().equals(student.getId())) {
                students.set(i, student);
                break;
            }
        }
    }

    // 删除学生信息
    public void deleteStudent(String id) {
        for (int i = 0; i < students.size(); i++) {
            if (students.get(i).getId().equals(id)) {
                students.remove(i);
                break;
            }
        }
    }
}

public class Main {
    public static void main(String[] args) {
        // 创建学生信息管理对象
        StudentManager studentManager = new StudentManager();
        
        // 添加学生信息
        Student student1 = new Student("001", "张三", 18);
        studentManager.addStudent(student1);
        
        // 查询学生信息
        Student student = studentManager.getStudentById("001");
        System.out.println("学号：" + student.getId());
        System.out.println("姓名：" + student.getName());
        System.out.println("年龄：" + student.getAge());
        
        // 修改学生信息
        student.setAge(19);
        studentManager.updateStudent(student);
        
        // 删除学生信息
        studentManager.deleteStudent("001");
    }
}