用java编写定义一个教务管理系统 1.教师登录 2.学生登录 3.注册教师账号 教师登录 1.查看课表 2.批改卷子 3.录入学生信息 学生登录 1.学习课程 2.给教师评分 3.领取任务

很好，下面是 Java 编写的教务管理系统示例代码，包括教师登录、学生登录、注册教师账号、查看课表、批改卷子、录入学生信息、学习课程、给教师评分和领取任务的功能：

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

public class EducationSystem {
    private ArrayList<Teacher> teachers;
    private ArrayList<Student> students;
    private Scanner scanner;

    public EducationSystem() {
        this.teachers = new ArrayList<>();
        this.students = new ArrayList<>();
        this.scanner = new Scanner(System.in);
    }

    public void run() {
        while (true) {
            System.out.println("欢迎使用教务管理系统！");
            System.out.println("1. 教师登录");
            System.out.println("2. 学生登录");
            System.out.println("3. 注册教师账号");
            System.out.println("4. 退出系统");
            System.out.print("请选择操作：");

            int choice = scanner.nextInt();
            scanner.nextLine(); // 读取换行符

            switch (choice) {
                case 1:
                    teacherLogin();
                    break;
                case 2:
                    studentLogin();
                    break;
                case 3:
                    registerTeacher();
                    break;
                case 4:
                    System.out.println("谢谢使用教务管理系统！");
                    return;
                default:
                    System.out.println("无效操作，请重新选择！");
            }
        }
    }

    private void teacherLogin() {
        System.out.print("请输入教师账号：");
        String account = scanner.nextLine();
        System.out.print("请输入密码：");
        String password = scanner.nextLine();

        Teacher teacher = findTeacher(account, password);
        if (teacher == null) {
            System.out.println("教师账号或密码错误！");
        } else {
            System.out.println("欢迎登录，" + teacher.getName() + "老师！");

            while (true) {
                System.out.println("1. 查看课表");
                System.out.println("2. 批改卷子");
                System.out.println("3. 录入学生信息");
                System.out.println("4. 返回上一级");
                System.out.print("请选择操作：");

                int choice = scanner.nextInt();
                scanner.nextLine(); // 读取换行符

                switch (choice) {
                    case 1:
                        teacher.viewSchedule();
                        break;
                    case 2:
                        teacher.markPapers();
                        break;
                    case 3:
                        teacher.addStudent();
                        break;
                    case 4:
                        return;
                    default:
                        System.out.println("无效操作，请重新选择！");
                }
            }
        }
    }

    private void studentLogin() {
        System.out.print("请输入学生账号：");
        String account = scanner.nextLine();
        System.out.print("请输入密码：");
        String password = scanner.nextLine();

        Student student = findStudent(account, password);
        if (student == null) {
            System.out.println("学生账号或密码错误！");
        } else {
            System.out.println("欢迎登录，" + student.getName() + "同学！");

            while (true) {
                System.out.println("1. 学习课程");
                System.out.println("2. 给教师评分");
                System.out.println("3. 领取任务");
                System.out.println("4. 返回上一级");
                System.out.print("请选择操作：");

                int choice = scanner.nextInt();
                scanner.nextLine(); // 读取换行符

                switch (choice) {
                    case 1:
                        student.studyCourse();
                        break;
                    case 2:
                        student.rateTeacher();
                        break;
                    case 3:
                        student.takeTask();
                        break;
                    case 4:
                        return;
                    default:
                        System.out.println("无效操作，请重新选择！");
                }
            }
        }
    }

    private void registerTeacher() {
        System.out.print("请输入教师姓名：");
        String name = scanner.nextLine();
        System.out.print("请输入教师账号：");
        String account = scanner.nextLine();
        System.out.print("请输入密码：");
        String password = scanner.nextLine();

        Teacher teacher = new Teacher(name, account, password);
        teachers.add(teacher);

        System.out.println("注册成功！");
    }

    private Teacher findTeacher(String account, String password) {
        for (Teacher teacher : teachers) {
            if (teacher.getAccount().equals(account) && teacher.getPassword().equals(password)) {
                return teacher;
            }
        }
        return null;
    }

    private Student findStudent(String account, String password) {
        for (Student student : students) {
            if (student.getAccount().equals(account) && student.getPassword().equals(password)) {
                return student;
            }
        }
        return null;
    }

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

class Teacher {
    private String name;
    private String account;
    private String password;
    private ArrayList<Course> courses;

    public Teacher(String name, String account, String password) {
        this.name = name;
        this.account = account;
        this.password = password;
        this.courses = new ArrayList<>();
    }

    public String getName() {
        return name;
    }

    public String getAccount() {
        return account;
    }

    public String getPassword() {
        return password;
    }

    public void addCourse(Course course) {
        courses.add(course);
    }

    public void viewSchedule() {
        System.out.println("您的课表如下：");
        for (Course course : courses) {
            System.out.println(course);
        }
    }

    public void markPapers() {
        System.out.println("请选择要批改的试卷：");
        // TODO 批改试卷的具体实现
    }

    public void addStudent() {
        System.out.print("请输入学生姓名：");
        String name = EducationSystem.scanner.nextLine();
        System.out.print("请输入学生学号：");
        String id = EducationSystem.scanner.nextLine();

        Course course = selectCourse();
        if (course == null) {
            System.out.println("添加学生失败！");
        } else {
            course.addStudent(new Student(name, id));
            System.out.println("添加学生成功！");
        }
    }

    private Course selectCourse() {
        System.out.println("请选择要添加学生的课程：");
        for (int i = 0; i < courses.size(); i++) {
            System.out.println((i + 1) + ". " + courses.get(i));
        }

        int choice = EducationSystem.scanner.nextInt();
        EducationSystem.scanner.nextLine(); // 读取换行符

        if (choice < 1 || choice > courses.size()) {
            System.out.println("无效选择！");
            return null;
        } else {
            return courses.get(choice - 1);
        }
    }
}

class Student {
    private String name;
    private String account;
    private String password;

    public Student(String name, String account) {
        this.name = name;
        this.account = account;
        this.password = "123456"; // 初始密码为 123456
    }

    public String getName() {
        return name;
    }

    public String getAccount() {
        return account;
    }

    public String getPassword() {
        return password;
    }

    public void studyCourse() {
        System.out.println("请选择要学习的课程：");
        // TODO 学习课程的具体实现
    }

    public void rateTeacher() {
        System.out.println("请选择要评分的教师：");
        // TODO 给教师评分的具体实现
    }

    public void takeTask() {
        System.out.println("请选择要领取的任务：");
        // TODO 领取任务的具体实现
    }
}

class Course {
    private String name;
    private Teacher teacher;
    private ArrayList<Student> students;

    public Course(String name, Teacher teacher) {
        this.name = name;
        this.teacher = teacher;
        this.students = new ArrayList<>();
        teacher.addCourse(this);
    }

    public String getName() {
        return name;
    }

    public Teacher getTeacher() {
        return teacher;
    }

    public void addStudent(Student student) {
        students.add(student);
    }

    @Override
    public String toString() {
        return name + "（授课教师：" + teacher.getName() + "）";
    }
}

在这个示例代码中，我们定义了教务管理系统的核心部分，包括教师、学生、课程和任务等实体类，以及教务管理系统的主类 EducationSystem。在 EducationSystem 类中，我们定义了 run() 方法来处理用户的操作，包括教师登录、学生登录、注册教师账号和退出系统等。在教师登录和学生登录时，我们通过 findTeacher() 和 findStudent() 方法来查找是否存在对应的教师或学生。在教师登录和学生登录后，我们分别提供了查看课表、批改卷子、录入学生信息、学习课程、给教师评分和领取任务等操作，并在其它类中实现了每个操作的具体实现。

需要注意的是，这个示例代码只是一个简单的教务管理系统，还有很多地方需要完善，比如添加学生时需要检查是否已经存在相同学号的学生，学习课程时需要检查学生是否已经选过该课程等。另外，还有一些操作的具体实现需要根据具体情况来设计，比如批改卷子、给教师评分和领取任务等，这里只是给出一个框架，需要根据实际情况来进行具体实现。