写一个教务管理系统代码

这是一个 Java 语言编写的简单教务管理系统代码，包含学生、教师、课程、成绩等基本功能：

import java.util.ArrayList;
import java.util.Scanner;

class Student {
    private String id;
    private String name;
    private String gender;
    private String major;

    public Student(String id, String name, String gender, String major) {
        this.id = id;
        this.name = name;
        this.gender = gender;
        this.major = major;
    }

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getGender() {
        return gender;
    }

    public String getMajor() {
        return major;
    }

    public void setMajor(String major) {
        this.major = major;
    }
}

class Teacher {
    private String id;
    private String name;
    private String gender;
    private String title;

    public Teacher(String id, String name, String gender, String title) {
        this.id = id;
        this.name = name;
        this.gender = gender;
        this.title = title;
    }

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getGender() {
        return gender;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }
}

class Course {
    private String id;
    private String name;
    private Teacher teacher;

    public Course(String id, String name, Teacher teacher) {
        this.id = id;
        this.name = name;
        this.teacher = teacher;
    }

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void setTeacher(Teacher teacher) {
        this.teacher = teacher;
    }
}

class Score {
    private Student student;
    private Course course;
    private double score;

    public Score(Student student, Course course, double score) {
        this.student = student;
        this.course = course;
        this.score = score;
    }

    public Student getStudent() {
        return student;
    }

    public Course getCourse() {
        return course;
    }

    public double getScore() {
        return score;
    }

    public void setScore(double score) {
        this.score = score;
    }
}

public class EduManagementSystem {
    private ArrayList<Student> studentList = new ArrayList<>();
    private ArrayList<Teacher> teacherList = new ArrayList<>();
    private ArrayList<Course> courseList = new ArrayList<>();
    private ArrayList<Score> scoreList = new ArrayList<>();

    public void addStudent() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入学生编号：");
        String id = scanner.next();
        System.out.print("请输入学生姓名：");
        String name = scanner.next();
        System.out.print("请输入学生性别：");
        String gender = scanner.next();
        System.out.print("请输入学生专业：");
        String major = scanner.next();
        Student student = new Student(id, name, gender, major);
        studentList.add(student);
        System.out.println("添加学生成功！");
    }

    public void addTeacher() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入教师编号：");
        String id = scanner.next();
        System.out.print("请输入教师姓名：");
        String name = scanner.next();
        System.out.print("请输入教师性别：");
        String gender = scanner.next();
        System.out.print("请输入教师职称：");
        String title = scanner.next();
        Teacher teacher = new Teacher(id, name, gender, title);
        teacherList.add(teacher);
        System.out.println("添加教师成功！");
    }

    public void addCourse() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入课程编号：");
        String id = scanner.next();
        System.out.print("请输入课程名称：");
        String name = scanner.next();
        System.out.print("请输入授课教师编号：");
        String teacherId = scanner.next();
        Teacher teacher = null;
        for (int i = 0; i < teacherList.size(); i++) {
            if (teacherList.get(i).getId().equals(teacherId)) {
                teacher = teacherList.get(i);
                break;
            }
        }
        if (teacher == null) {
            System.out.println("授课教师编号不存在！");
            return;
        }
        Course course = new Course(id, name, teacher);
        courseList.add(course);
        System.out.println("添加课程成功！");
    }

    public void addScore() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入学生编号：");
        String studentId = scanner.next();
        Student student = null;
        for (int i = 0; i < studentList.size(); i++) {
            if (studentList.get(i).getId().equals(studentId)) {
                student = studentList.get(i);
                break;
            }
        }
        if (student == null) {
            System.out.println("学生编号不存在！");
            return;
        }
        System.out.print("请输入课程编号：");
        String courseId = scanner.next();
        Course course = null;
        for (int i = 0; i < courseList.size(); i++) {
            if (courseList.get(i).getId().equals(courseId)) {
                course = courseList.get(i);
                break;
            }
        }
        if (course == null) {
            System.out.println("课程编号不存在！");
            return;
        }
        System.out.print("请输入成绩：");
        double score = scanner.nextDouble();
        Score s = new Score(student, course, score);
        scoreList.add(s);
        System.out.println("添加成绩成功！");
    }

    public void queryScore() {
        Scanner scanner = new Scanner(System.in);
        System.out.print("请输入学生编号：");
        String studentId = scanner.next();
        Student student = null;
        for (int i = 0; i < studentList.size(); i++) {
            if (studentList.get(i).getId().equals(studentId)) {
                student = studentList.get(i);
                break;
            }
        }
        if (student == null) {
            System.out.println("学生编号不存在！");
            return;
        }
        for (int i = 0; i < scoreList.size(); i++) {
            if (scoreList.get(i).getStudent().getId().equals(studentId)) {
                System.out.println("课程编号：" + scoreList.get(i).getCourse().getId() +
                        " 课程名称：" + scoreList.get(i).getCourse().getName() +
                        " 成绩：" + scoreList.get(i).getScore());
            }
        }
    }

    public void start() {
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.println("欢迎使用教务管理系统！");
            System.out.println("1. 添加学生");
            System.out.println("2. 添加教师");
            System.out.println("3. 添加课程");
            System.out.println("4. 添加成绩");
            System.out.println("5. 查询成绩");
            System.out.println("0. 退出系统");
            System.out.print("请选择操作：");
            int choice = scanner.nextInt();
            switch (choice) {
                case 1:
                    addStudent();
                    break;
                case 2:
                    addTeacher();
                    break;
                case 3:
                    addCourse();
                    break;
                case 4:
                    addScore();
                    break;
                case 5:
                    queryScore();
                    break;
                case 0:
                    System.out.println("谢谢使用！");
                    System.exit(0);
                default:
                    System.out.println("无效的选择！");
                    break;
            }
        }
    }

    public static void main(String[] args) {
        EduManagementSystem system = new EduManagementSystem();
        system.start();
    }
}

这个系统主要包含了添加学生、教师、课程、成绩以及查询成绩等功能，可以根据实际需求进行扩展和改进。