12.5

package com.example.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Course {
    private String courseID;
    private String courseName;
    private int courseCount;
    private String courseTeacher;
    private int count;
}

Information

package com.example.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Information {
    private String courseID;
    private String teacherID;
    private String studentID;
}

Student

package com.example.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Student {
    private String studentID;
    private String studentName;
    private String studentSex;
    private String studentClass;
    private String studentMajor;
}

Teacher

package com.example.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Teacher {
    private String teacherID;
    private String teacherName;
    private String teacherSex;
    private String teacherCollege;
    private String position;
}

User

package com.example.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private  String userName;
    private String password;
    private  String position;
}