Implemented an ElearningPlatform in Java 17.0.2 version and stored data with MySQL.

You can find Project Tasks (here)

• Package dao which contains for each object:
  • DDL instructions (create table)
  • DML instructions (insert, update, delete)
  • SQL queries (select)
• Package pojo which contains all objects
• Package util which containts:
  • An Main Service called ElearningPlatformService
  • An Interface called AdmintInterface which contains some lists of objects and some necessary methods that must be implemented
  • An dao (Data Access Object) class which is meant to connect to database or if the database isnt created to create one
• A Main class from which the User can call any of the below options

• Course
• CourseFeedback
• CourseMaterial
• Material
• Quiz
• Student
• Teacher
• TeachingAssistant
• User
• UserCourseRepartition

• Add Student
• Delete Student
• Update Student ScholarShip Status
• Display all Students
• Add Teacher
• Delete Teacher
• Increase Teacher Salary by procent
• Display all Teachers
• Add Teaching Assistant
• Delete Teaching Assistant
• Increase Teaching Assistant Salary by procent
• Display all Teaching Assistants
• Delete User
• Update User Gender
• Update User Phone Number
• Update User Address
• Update User Nationality
• Find User By Id
• Display all Users
• Add Course
• Delete Course
• Update Course description
• Display all Courses
• Add Course Feedback
• Delete Course Feedback
• Update Course Feedback (number of stars, feedback)
• Update Course Feedback (only number of stars)
• Update Course Feedback (only feedback)
• Display all CourseFeedbacks
• Display all CourseFeedbacks for an specific Course
• Add Quiz
• Delete Quiz
• Update Quiz Name
• Display all Quizzes
• Add Material
• Delete Material
• Update Material Availability Status
• Update Material Description
• Update Material Name
• Display all Materials used for an Course by Course ID
• Display all Materials
• Add Course Material
• Delete Course Material
• Update Course Material
• Display all Course Materials
• Add User Course Repartition
• Delete User Course Repartition
• Update User Course Repartition
• Display all Course Repartitions for an Specific Student
• Display all User Course Repartitions

• Audit Service where you can see logs of actions made by an User (name of action & timestamp)
• Used Singleton Design Pattern for ELearningPlatformService and Dao objects.
• Used regex expressions for some validations:
  • Dateformat
  • Answers (must be yes or no)
  • Number of stars for an Feedback (must be between 0 and 5 only)
• Handled various exceptions, such as those generated by SQL statements, to make debugging easier